Kira runs a total of 144 miles in 9 weeks.
Step-by-step explanation:
Given,
Distance covered on Monday = 2.5 miles
Distance covered on Wednesday = 5.75 miles
Distance covered on Friday = 7.75 miles
Total distance covered per week = 2.5+5.75+7.75 = 16 miles
Total distance in 9 weeks = Distance per week * 9
Total distance in 9 weeks = 16*9 = 144 miles
Kira runs a total of 144 miles in 9 weeks.
Keywords: addition, multiplication
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An arithmetic sequence begins as follows: a1=13 a2=19 Which of the following gives the definition of its nth term?
Answer:
the nth term of the sequence is [tex]a_n=6n+7[/tex]
Step-by-step explanation:
Given : An arithmetic sequence begins as follows: [tex]a_1=13, a_2=19[/tex]
To find : Which of the following gives the definition of its nth term?
Solution :
The nth term of the A.P is [tex]a_n=a+(n-1)d[/tex]
The first term is [tex]a=a_1=13[/tex]
The common difference is [tex]d=a_2-a_1[/tex]
[tex]d=19-13=6[/tex]
Substitute in the formula,
[tex]a_n=13+(n-1)6[/tex]
[tex]a_n=13+6n-6[/tex]
[tex]a_n=6n+7[/tex]
Therefore, the nth term of the sequence is [tex]a_n=6n+7[/tex]
The nth term of the given arithmetic sequence is defined by the formula an = 13 + (n-1)*6. This is derived from the general formula for an arithmetic sequence and using the given first two terms.
Explanation:In this given problem, we have an arithmetic sequence. An arithmetic sequence is a list of numbers in which each term is obtained by adding a constant difference to the preceding term. For this particular sequence, the first term (a1) is 13, and the second term (a2) is 19. Hence, the common difference (d) between the terms is 19 - 13 = 6.
The general formula for the nth term (an) of an arithmetic sequence is given by an = a1 + (n-1)*d. In this situation, to represent any term in the series, the formula would be an = 13 + (n-1)*6. This formula can generate any term in the sequence, given the term number.
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Stella Blue gets in a serious car accident 2 months after buying a new policy and only paying $700 in premiums. Her insurer had to pay $500,000; this is an example of what type insurance contract characteristic?
Answer:
Aleatory
Step-by-step explanation:
This is an example of Aleatory type of insurance contact.
Definition:
A contract preoccupied with an unclear occurrence that delivers for imbalanced transfer of worth between the parties. Insurance plans are discretionary investments and, after sustaining a reported loss, a person must pay premiums for many years. Most insurance policies are aleatory contacts.
Math question any help appreciated ! Find x.
==================================
Explanation:
Mark point D as the center of the circle. Segment EG is the diameter, so angle EDG is 180 degrees. By the central angle theorem, arc EFG is also 180 degrees.
The minor arc from E to F (follow the shortest path along the circle) is 56 degrees. From F to G, along the shortest path, we have y degrees.
(minor arc EF)+(minor arc FG) = arc EFG
56+y = 180
56+y-56 = 180-56
y = 180-56
y = 124
Minor arc FG is 124 degrees.
This is equivalent to saying that central angle FDG is 124 degrees.
-----------------
The inscribed angle for minor arc FG is the angle FEG, which is half that of the minor arc measure.
inscribed angle = (1/2)*(arc measure)
angle FEG = (1/2)*(minor arc FG)
x = (1/2)*(124)
x = 62
Good evening ,
Answer:
x = 62°
Step-by-step explanation:
x equals to half the measure of the central angle FOG
x = (1/2)×(m∠FOG)
m∠FOG = 180 - m∠EOF
= 180 - 56
= 124
then x = 124/2 = 62.
:)
Three friends pay $1,025 to rent a vacation home. Beth contributed $80 more than Danny. Katie contributed $20 less than Beth. How much did Danny contribute?
Answer:
$295
Step-by-step explanation:
Let d represent the amount Danny contributed. Then Beth contributed (d+80) and Katie contributed ((d+80)-20) = (d+60). The total from the three friends is ...
d + (d+80) +(d+60) = $1025
3d = 885 . . . . . . . . . . . . . . . . . . . subtract 140
d = 295 . . . . . . . . . . . . . . . . . . . . divide by 3; Danny's contribution
Danny contributed $295.
2,250 watts to horsepower (Round answer to the nearest thousandth.
Answer: 3.017hp
Step-by-step explanation: 745.7watts = 1hp
2250watts will be (2250/745.7)hp
i.e 3.017watts
3.017 horsepower will be the value of the 2,250 watts of horsepower
Standardization and kinds of horsepower vary widely. Mechanical horsepower meaning around 745.7 watts, and the metric horsepower, which is roughly 735.5 watts, are two commonly used classifications today. The horsepower is denoted by hp.
The value of 1 horsepower will be:
745.7 watts = 1 horsepower
Calculating the value of 2250 watts with respect to the horsepower
= (2250/745.7)
= 3.017 horsepower
Therefore, the value is 3.017 horsepower
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The width of a rectangle, in feet, is represented by left parenthesis 3 x minus 1.5 right parenthesis. The length of the rectangle, in feet, is represented by left parenthesis 1.25 x plus 3 right parenthesis. Find the perimeter of the rectangle.
Given the width and length of the rectangle in terms of x, the formula for the perimeter is substituted with these expressions. After simplifying, the perimeter of the rectangle is found to be represented by the equation 8.5x + 3.
Explanation:The subject represents a problem in mathematics, specifically geometry. The perimeter of a rectangle is calculated by the formula 2(width + length). Given that the width is meant to be represented by (3x - 1.5) and the length is represented by (1.25x + 3), we substitute these expressions into our formula to find the perimeter of the rectangle.
Perimeter = 2[(3x - 1.5) + (1.25x + 3)].
To simplify, the above equation becomes:
Perimeter = 2[4.25x + 1.5],
which then further simplifies to:
Perimeter = 8.5x + 3.
The perimeter of the rectangle is therefore represented by the expression 8.5x + 3.
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Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.9 × 10-4m2 and the speed of the water is 0.75 m/s as it leaves the faucet. Ignoring air resistance, find the cross-sectional area of the water stream at a point 0.10 m below the faucet.
Answer:
[tex]8\times10^5m^2[/tex]
Step-by-step explanation:
To find the cross-section area at a point below the faucet
we can use following equations
[tex]v_1^2=v_2^2+2ay[/tex]
and equation of continuity
[tex]A_1v_1=A_2v_2[/tex]
v_1= velocity at the out let
v_2= velocity at the inlet (faucet)= 0.75 m/s
y = distance below the faucet = 0.10 m
A_1= cross-sectional area of the water stream at a point 0.10 m below the faucet.
A_2= area of faucet= 1.9 × 10-4m2
from above two equation we can write
[tex]A_1= \frac{A_2v_2}{\sqrt{v_2^2+2ay} }[/tex]
now putting the values we get
[tex]A_1= \frac{1.9\times10^{-4}\times0.75}{\sqrt{0.75^2+2\times9.80\times0.10} }[/tex]
A_1= 0.00008= [tex]8\times10^5[/tex]
Marge bought a computer for $699 on the installment plan. The terms of the plan were a down payment of $100, then payments of $58 a month for 12 months. How much was her total cost?
Answer:
$796
Step-by-step explanation:
We have been given that Marge bought a computer for $699 on the installment plan. The terms of the plan were a down payment of $100, then payments of $58 a month for 12 months.
First of all, we will find the amount paid in 12 months by multiplying $58 by 12 as:
[tex]\text{Amount paid in 12 months}=\$58\times 12[/tex]
[tex]\text{Amount paid in 12 months}=\$696[/tex]
Since Marge paid $100 as down payment, so her total cost would be down payment plus amount paid in 12 months.
[tex]\text{Marge's total cost}=\$100+\$696[/tex]
[tex]\text{Marge's total cost}=\$796[/tex]
Therefore, Marge's total cost was $796.
A college infirmary conducted an experiment to determine the degree of relief provided by three cough remedies. Each cough remedy was tried on 50 students and the accompanying data recorded. Test the hypothesis that the three cough remedies are equally effective. Use a P-value in your conclusion.
Answer:
[tex]p_v = P(\chi^2_{4,0.05} >3.81)=0.43233[/tex]
Since the p values is higher than the significance level we FAIL to reject the null hypothesis at 5% of significance, and we can conclude that we don't have significant differences between the 3 remedies analyzed. So we can say that the 3 remedies ar approximately equally effective.
Step-by-step explanation:
A chi-square goodness of fit test "determines if a sample data matches a population".
A chi-square test for independence "compares two variables in a contingency table to see if they are related. In a more general sense, it tests to see whether distributions of categorical variables differ from each another".
Assume the following dataset:
NyQuil Robitussin Triaminic Total
No relief 11 13 9 33
Some relief 32 28 27 87
Total relief 7 9 14 30
Total 50 50 50 150
We need to conduct a chi square test in order to check the following hypothesis:
H0: There is no difference in the three remedies
H1: There is a difference in the three remedies
The level os significance assumed for this case is [tex]\alpha=0.05[/tex]
The statistic to check the hypothesis is given by:
[tex]\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}[/tex]
The table given represent the observed values, we just need to calculate the expected values with the following formula [tex]E_i = \frac{total col * total row}{grand total}[/tex]
And the calculations are given by:
[tex]E_{1} =\frac{50*33}{150}=11[/tex]
[tex]E_{2} =\frac{50*33}{150}=11[/tex]
[tex]E_{3} =\frac{50*33}{150}=11[/tex]
[tex]E_{4} =\frac{50*87}{150}=29[/tex]
[tex]E_{5} =\frac{50*87}{150}=29[/tex]
[tex]E_{6} =\frac{50*87}{150}=29[/tex]
[tex]E_{7} =\frac{50*30}{150}=10[/tex]
[tex]E_{8} =\frac{50*30}{150}=10[/tex]
[tex]E_{9} =\frac{50*30}{150}=10[/tex]
And the expected values are given by:
NyQuil Robitussin Triaminic Total
No relief 11 11 11 33
Some relief 29 29 29 87
Total relief 10 10 10 30
Total 50 50 50 150
And now we can calculate the statistic:
[tex]\chi^2 = \frac{(11-11)^2}{11}+\frac{(13-11)^2}{11}+\frac{(9-11)^2}{11}+\frac{(32-29)^2}{29}+\frac{(28-29)^2}{29}+\frac{(27-29)^2}{29}+\frac{(7-10)^2}{10}+\frac{(9-10)^2}{10}+\frac{(14-10)^2}{10} =3.81[/tex]
Now we can calculate the degrees of freedom for the statistic given by:
[tex]df=(rows-1)(cols-1)=(3-1)(3-1)=4[/tex]
And we can calculate the p value given by:
[tex]p_v = P(\chi^2_{4,0.05} >3.81)=0.43233[/tex]
And we can find the p value using the following excel code:
"=1-CHISQ.DIST(3.81,4,TRUE)"
Since the p values is higher than the significance level we FAIL to reject the null hypothesis at 5% of significance, and we can conclude that we don't have significant differences between the 3 remedies analyzed.
To test the hypothesis that three cough remedies are equally effective, conduct an Analysis of Variance (ANOVA) test and use the p-value, compared to the pre-set level of 0.05, to decide if the null hypothesis should be rejected or failed to reject.
Explanation:The subject matter pertains to hypothesis testing, a method used in statistics to test the validity of a claim (hypothesis) about a population. In this case, the null hypothesis in your question is that the three cough remedies are equally effective. The alternative hypothesis (Ha) is that at least one of the remedies is different. The P-value, when set at 0.05, helps to decide on the rejection or non-rejection of the null hypothesis, depending on whether it’s greater or smaller than the P-value.
First, we need to perform an Analysis of Variance (ANOVA) test since we have more than two samples to compare. After conducting the test, we compare the P-value with our pre-set alpha (0.05). If the p-value obtained is less than 0.05, we can reject the null hypothesis, letting us conclude that not all cough remedies are equally effective. If, however, the p-value is more than 0.05, we fail to reject the null hypothesis, and hence, we can't confidently say that one cough remedy is more effective than the others.
Remember that failing to reject the null hypothesis does not prove it true, it only suggests that there's not enough evidence against it given our data and chosen significance level.
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A hardware store rent vacuum cleaners that customers for part or all of A day before returning. The Store charges a flat fee Plus an hourly rate. Write a linear function F for the total retail cost of a vacuum cleaner.
A linear function can be used to represent the total retail cost of renting a vacuum cleaner: F(x) = 31.50 + 32x.
Explanation:A linear function can be used to represent the total retail cost of renting a vacuum cleaner. Let's denote the fixed fee as $31.50 and the hourly rate as $32. The linear function F for the total retail cost of a vacuum cleaner can be written as:
F(x) = 31.50 + 32x
Where x represents the number of hours the vacuum cleaner is rented for and F(x) gives the total retail cost.
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The flat fee that the store charges is $14 and the cost for 7 hours is $56
A linear equation is on the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the initial value of y.
let f for the total rental cost of a vacuum cleaner for x hours
Using the points (1, 20) and (3, 32) from the table:
f-f1=(f2-f1)/(x2-x1) (x-x1)
f-20=(32-20)/(3-1) (x-1)
f(x)=6x+14
The flat fee that the store charges is $14
The reasonable domain is 1 ≤ x ≤ 12
The cost for 7 hours is:
f(7) = 6(7) + 14 = 46
here is the complete question-
A hardware store rents vacuum cleaners that customers may use for part or all of a day before returning. The store charges a flat fee plus an hourly rate. Part A Write a linear function f for the totall rental cost of the vacuum cleaner. A. f(x)=6x+14 B. f(x)=3x+14 C, f(x)=3x+22 D. f(x)=6x+24 Part B What is a reasonable domain for the function? A. 14 B. 1 C. 0 D. 20
Sonia bought 30 t shirts at a clothing store. 20% of the t shirts were blue and 1/2 of the t shirts were black. How many of the t shirts were neither black or blue?
9 T-Shirts
Step-by-step explanation: There are 30 t shirts. 20% of the t shirts were blue and 1/2 of the t shirts were black. 20% is equivalent/ the same as 20/100 and simplified, 1/5. 1/2 black + 1/5 blue = 70/100 black and blue. This leaves 30/100(30%) remaining t shirts (neither black or blue). This leaves us to find 30% of 30 (shirts). 30% of 30 equals 9. 30/100 = 9/30.Final answer:
To find the number of t-shirts that were neither black nor blue, subtract the number of black and blue t-shirts from the total. In this case, there were 9 t-shirts that were neither black nor blue.
Explanation:
To find the number of t-shirts that were neither black nor blue, we need to subtract the number of black and blue t-shirts from the total number of t-shirts.
20% of the t-shirts were blue, which means there were 30 x 0.20 = 6 blue t-shirts.
1/2 of the t-shirts were black, which means there were 30 x (1/2) = 15 black t-shirts.
Now, to find the number of t-shirts that were neither black nor blue, we subtract the number of black and blue t-shirts from the total number of t-shirts:
Total number of t-shirts - (Number of black t-shirts + Number of blue t-shirts) = 30 - (15 + 6) = 30 - 21 = 9.
Therefore, there were 9 t-shirts that were neither black nor blue.
You want to paddle a canoe across a small lake and want to know how far it is to the other side. You take measurements ln your side of the lake and make the drawing shown . What is the distance x across the lake
Answer:
[tex] x= 5*400 ft = 2000 ft[/tex]
Step-by-step explanation:
For this case we can use the figure attached and we are interested in order to find the value of x.
We have two similar triangles (DEC and ABC) and we can find the scale factor like this:
[tex]Factor= \frac{EC}{BC}=\frac{500ft}{100ft}=5[/tex]
And now we can apply proportions in order to find the value of x using the two sides DE and BA, since we have the ratio between the triangle DEC and ABC we have this:
[tex]Factor=5=\frac{x ft}{400 ft}[/tex]
And solving for x we got:
[tex] x= 5*400 ft = 2000 ft[/tex]
And then the distance across the lake would be 2000 ft
Answer:
ewq
Step-by-step explanation:
Nuri joins a game for a car. The rule is that Nuri picks one key from the box either A, B, or C. A box has two keys but only one can be used. B box has three keys but only one can be used. C box has two keys but none of them can be used.
What is the probability that Nuri can win the car?
Answer:0.277
Step-by-step explanation:
Given there are three boxes i.e. A , B and C
Probability of selecting any box is [tex]P_1=\frac{1}{3}[/tex]
Box A contains 2 keys out of which is 1 is correct so Probability of selecting the right key is [tex]P_2=\frac{1}{2}[/tex]
Box B contains 3 keys out of which is 1 is correct so Probability of selecting the right key is [tex]P_3=\frac{1}{3}[/tex]
Box C contains 2 keys out of which is 1 is correct but we cannot use it so Probability of selecting the right key is [tex]P_4=0[/tex]
Probability of selecting the right key is [tex]P=P_1\times P_2+P_1\times P_2+P_1\times P_3[/tex]
[tex]P=\frac{1}{3}\times \frac{1}{2}+\frac{1}{3}\times \frac{1}{3}+\frac{1}{3}\times 0[/tex]
[tex]P=\frac{5}{18}[/tex]
[tex]P=0.277[/tex]
Simplify. 2( 5 3 + 3 4 ) − 4 3
1. Question: What is the number of the parking space covered by the car?
20 seconds to solve the problem!
will get brainiest ;b
Answer: the number of the parking space covered by the car is 87
Step-by-step explanation:
Numbers are assigned to each parking spot. Looking closely at the numbers assigned to each spot, the numbers are inverted and the number on each successive spot differ by one. The numbers are 86, 87, 88, 89, 90, 91
Therefore, the number assigned to the spot where the car would be 87
Which of the following is the slope of the line?
Help ASAP PLZ
Answer: the second option is the correct answer
Step-by-step explanation:
Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis
change in the value of y = y2 - y1
Change in value of x = x2 -x1
y2 = final value of y
y 1 = initial value of y
x2 = final value of x
x1 = initial value of x
From the information on the graph y2 = - 1
y1 = - 2
x2 = 4
x1 = 0
Slope = ( - 2 - - 1)/(4 - 0) = - 1/4
Answer:
[tex]\frac{1}{4}[/tex]
Step-by-step explanation:
To find the slope of a line we need two points through which it is passing.
From the figure, we can see that the line passes through (0,-2) and (4,-1).
Slope of a line passing through two points [tex](x_{1},y_{1})\ and\ (x_{2},y_{2})[/tex] is given by the formula:
[tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
Here x1=0 y1=-2 x2=4 y2=-1
Slope = [tex]\frac{-1-(-2)}{4-0}=\frac{1}{4}[/tex]
Hence the slope of the line is [tex]\frac{1}{4}[/tex]
Given points A (1, 2/3), B (x, -4/5), and C (-1/2, 4) determine the value of x such that all three points are collinear
Answer:
[tex]x=\frac{83}{50}[/tex]
Step-by-step explanation:
we know that
If the three points are collinear
then
[tex]m_A_B=m_A_C[/tex]
we have
A (1, 2/3), B (x, -4/5), and C (-1/2, 4)
The formula to calculate the slope between two points is equal to
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
step 1
Find the slope AB
we have
[tex]A(1,\frac{2}{3}),B(x,-\frac{4}{5})[/tex]
substitute in the formula
[tex]m_A_B=\frac{-\frac{4}{5}-\frac{2}{3}}{x-1}[/tex]
[tex]m_A_B=\frac{\frac{-12-10}{15}}{x-1}[/tex]
[tex]m_A_B=-\frac{22}{15(x-1)}[/tex]
step 2
Find the slope AC
we have
[tex]A(1,\frac{2}{3}),C(-\frac{1}{2},4)[/tex]
substitute in the formula
[tex]m_A_C=\frac{4-\frac{2}{3}}{-\frac{1}{2}-1}[/tex]
[tex]m_A_C=\frac{\frac{10}{3}}{-\frac{3}{2}}[/tex]
[tex]m_A_C=-\frac{20}{9}[/tex]
step 3
Equate the slopes
[tex]m_A_B=m_A_C[/tex]
[tex]-\frac{22}{15(x-1)}=-\frac{20}{9}[/tex]
solve for x
[tex]15(x-1)20=22(9)[/tex]
[tex]300x-300=198[/tex]
[tex]300x=198+300[/tex]
[tex]300x=498[/tex]
[tex]x=\frac{498}{300}[/tex]
simplify
[tex]x=\frac{83}{50}[/tex]
The combined ages of a dog and his owner are 96 years in total. The owner is 3 times older than his dog. How old is the owner?
Answer:
72 yrs old.
Step-by-step explanation:
The combined age
D+O=96
The owner is 3 times older than dog
O=3D
D+3D=96
4D = 96
D= 24
Now substitute the value of D in O=3D
O=3.24= 72
The owner is 72 years old.
To solve this problem, we can use algebra. Let's define the dog's age as 'd' and the owner's age as 'o'. By solving the two equations (o + d = 96 and o = 3d), we can determine that the dog is 24 years old and the owner is 72 years old.
Explanation:The question asks us to find the age of a dog's owner, given that the combined ages of the owner and the dog are 96 years, and the owner's age is three times the age of the dog. We can use algebra to solve this problem.
Let's define the dog's age as 'd' and the owner's age as 'o'. We know that o = 3d (the owner's age is three times the dog's age) and o + d = 96 (the combined ages of the owner and the dog are 96).
To find the owner's age, substitute '3d' for 'o' in the second equation: 3d + d = 96. This simplifies to 4d = 96. Dividing both sides of the equation by 4 gives us d = 24, meaning the dog is 24 years old. Now we substitute d = 24 into the equation o = 3d, resulting in o = 72. Therefore, the owner is 72 years old.
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Distributive property you want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, andb$6.00. How much will you save?
Answer:
The saving amount on selling of three books together after discount of 20% is $2.69
Step-by-step explanation:
Given as :
The original price of first book = $2.50
The original price of second book = $4.95
The original price of third book = $6.00
The total percentage discount on the book = d = 20%
Let The saving money after purchased of book = $x
And Let the selling price of the book = s.p = $y
Now, According to question
The total market price of three books = m.p = $2.50 + $4.95 + $6.00
I.e m.p = $13.45
Now, from discount formula
Discount % = [tex]\dfrac{market price - selling price}{market price}[/tex]
Or, d% = [tex]\dfrac{m.p - s.p}{m.p}[/tex]
Or, 20% = [tex]\dfrac{13.45 - y}{13.45}[/tex]
Or, [tex]\dfrac{20}{100}[/tex] = [tex]\dfrac{13.45 - y}{13.45}[/tex]
Or, 20 × 13.45 = (13.45 - y) × 100
Or, 269 = 1345 - 100 y
Or, 100 y = 1345 - 269
Or, 100 y = 1076
∴ y = [tex]\dfrac{1076}{100}[/tex]
i.e y = $10.76
So, The selling price of three books = y = $10.76
∴ The saving amount on selling of three books together after discount of 20% = x = Total market price - Selling price
i.e x = m.p - y
or, x = $13.45 - $10.76
or, x = $2.69
Hence ,The saving amount on selling of three books together after discount of 20% is $2.69 Answer
Accounts Payable 420 Accounts Receivable 3,200 Capital Stock 240 Cash 100 Cost of Goods Sold 600 Inventory 380 Long-term Debt 4,640 Net Income 280 Property, Plant, and Equipment (net) 1,400 Retained Earnings (220) Sales 3,000 Note: The retained earnings amount reported is as of the END of the year (after the closing entries have been made). The number of shares outstanding is 100. Compute BOOK VALUE PER SHARE.
Answer:
??????????????????? what
Sometimes a trigonometric equation is written in quadratic form. This means that you can solve the equation the same way you would solve a standard quadratic equation. For example, the equation: sin2 2.5x − 4 sin 2.5x − 5 = 0 can be considered to be like the form x 2 − 4x − 5 = 0. Use this fact to solve this trigonometric equation on the interval 0 ≤ x < 2π.
Answer:
108 degrees
Step-by-step explanation:
To solve this adequately, we simply make a substitution. We can say let sin2.5x = x
Hence we can thus have the quadratic equation form which we can solve.
x ^2 − 4x − 5 = 0.
Solving this yields the following:
x^2 +x - 5x -5 = 0
x( x + 1) -5(x + 1) = 0
(x - 5) (x + 1) = 0
x = 5 or -1
Recall the substitution:
sin2.5x = x
We cannot use the value -5 as the value of the sine function cannot be in this range. We thus ignore it and pick the -1 answer only.
Sin2.5x = -1
2.5x = arcsin(-1) = 270
2.5x = 270
x = 270/2.5 = 108 degrees
A collection of numerical information, such as the scores on a test, is referred to as simple random sampling.True / False.
Answer:
False. See explanation below.
Step-by-step explanation:
False
A simple random sample "is a subset of a statistical population in which each member of the subset has an equal probability of being chosen"
In other words that means in order to apply a random sampling we need to ensure that we have the same probability of inclusion for every possible element of the population of interest.
And for this case a collection of any numerical information is not referred as random sampling since we don't know if these scores are representative of the population of interest.
And we don't know if this information is obtained using any sampling frame or sampling methodology.
James and Lucas competed in climbing a mountain and coming back. James climbed at an average rate of 3 mph and ran back at 4 mph. Lucas climbed at an average rate of 2 mph and ran back at 5 mph. If the path from the bottom to the top of the mountain was 2 miles, how much time did each take to finish and who was faster?
Answer:Lucas is faster
Step-by-step explanation:
Distance = speed × time
Time = distance × speed
the path from the bottom to the top of the mountain was 2 miles.
James climbed at an average rate of 3 mph. This means that the time it took James to climb to the top of the mountain would be
2/3 hours
James ran back at 4 mph. This means that the time it took James run back to the bottom of the mountain would be
2/4 = 1/2 hours
Total time that James spent would be
2/3 + 1/2 = 7/6 = 1.7 hours.
Lucas climbed at an average rate of 2 mph. This means that the time it took Lucas to climb to the top of the mountain would be
2/2 = 1 hour
Lucas ran back at 5 mph. This means that the time it took Lucas to run back to the bottom of the mountain would be
2/5 hours
Total time that James spent would be
1 + 2/5 = 1.4hours.
Answer:
James is faster
Step-by-step explanation:
It took 70 minutes for James to finish and 84 minutes for Lucas to finish and James was faster.
Step-by-step explanation:
Keep in mind that Distance = Speed * Time
First lets starts off with James,
Climbing rate of James = 3 mph
Running back rate of James = 4 mph
Total time taken by James = 3/4 x 2/4 = 14/12 = 7/6
Lets convert that into min to make it easier,
7/6 x 60 = 70 min
Now, lets look at lucas,
Climbing rate of Lucas = 2/2 = 1 hour(s) or 60 minutes
Climbing back rate of Lucas = 2/5 of an hour
Now lets convert this one into minutes,
2/5 x 60 = 24 minutes
Total time taken by Lucas = 24 + 60 = 84 minutes
so that means
James = 70 minutes
Lucas = 84 minutes
Therefore James was faster
Hope this helped and please correct me if I got something wrong :)
Use the next of a rectangular prism to answer the question
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Work out the area of the square :
6 x 6 = 36
As there are 2, multiply by 2:
36 x 2 = 72
Work out the area of the rectangle:
12 x 6 = 72
As there are 4, multiply by 4:
72 x 4 = 288
Add these values:
288 + 72 = 360
Thus, your answer is E. 360 in^2
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
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I honestly need help on this...I tried to work it out but I just don’t know where to start...
Answer:
Step-by-step explanation:
1) The sum of angles on a straight line is 180 degrees. Therefore
75 + a + 70 = 180
145 + a = 180
a = 180 - 145 = 35 degrees
2) Sum of the angles in a triangle is 180 degrees. Therefore,
a + b + 95 = 180
35 + b + 95 = 180
130 + b = 180
b = 180 - 130 = 50 degrees
3) c + 95 = 180 degrees (sum of angles on a straight line).
c = 180 - 95 = 85 degrees
4) 70 + c + d = 180 degrees
70 + 85 + d = 180
155 + d = 180
d = 180 - 155 = 25 degrees
5) e = 75 degrees
6) f + e + 75 = 180 degrees
f + 75 + 75 = 180
f + 150 = 180
f = 180 - 150 = 30 degrees
The fractional reserve banking system depends upon the _________________ of the public.
Answer:
The fractional reserve banking system depends upon the confidence and trust of the public.
Step-by-step explanation:
The fractional reserve banking means that bank uses the deposits of customers to lend money to the borrowers.
Rosita earns money by walking dogs after school and on weekends.She walks Madeline every other day,buddy every fourth day,and ernie every third day.Today she walked all three dogs. What day did she walk all three dogs?
On 12th day Rosita will walk all three dogs
Solution:
Given that Rosita earns money by walking dogs after school and on weekends
She walks Madeline every other day,buddy every fourth day,and ernie every third day
Today she walked all three dogs
To find: the day when she walked all three dogs
From given question,
Madeline is walked every other day means every two days: 2
Buddy is walked every fourth day: 4
Ernie is walked every third day: 3
To find the day when she walked all three dogs, we have to find the least common multiple (LCM) of 2, 4, 3
L.C.M of 2, 4, 3:
List all prime factors for each number
Prime Factorization of 2 shows:
2 is prime => [tex]2^1[/tex]
Prime Factorization of 3 shows:
3 is prime => [tex]3^1[/tex]
Prime Factorization of 4 is:
[tex]2 \times 2 = 2^2[/tex]
For each prime factor, find where it occurs most often as a factor and write it that many times in a new list.
The new superset list is
2, 2, 3
Multiply these factors together to find the LCM.
LCM = 2 x 2 x 3 = 12
Thus on 12th day Rosita will walk all three dogs
Four friends went out for dinner. The bill, including tax, totaled $64.00. If they want to leave a 15% tip and want to share the bill and tip equally, what should each person pay?
Answer:
$18.40
Step-by-step explanation:
64*1.15=73.60
73.60/4=18.40
Help with this exercise
Answer:
View Image
Step-by-step explanation:
Solve for y.
You have a ≥ so it's a solid line and you shade above that line.
Jamie bought a soda for $3. He also bought some corn dogs for $4 each. Jamie did not spend more than $27 on the corn dogs and the soda. Which inequality can be used to find h, the number of corn dogs that Jamie could have bought?
Answer:
The number of corn dogs bought is 3.
Step-by-step explanation:
It is given that, cost of soda is $3 and cost of corn dogs is $4 each.
Let the number of soda bought be "x" and corn dogs be "y".
Thus the total amount spent is given by,
[tex]A = 3x + 4y[/tex]
The total amount is less than or equal to $27, which means;
[tex]3x+4y\leq 27[/tex]
The above inequality can be used to find the number of corn dogs bought.
[tex]y\leq \frac{27-3x}{4}[/tex]
Now, number of items bought are greater than zero and integers, thus x and y are greater than zero integers.
Inserting x from 0 to 9, we get only two only 2 answers,
(x,y) = (5,3) and (9,0)
But it is said that number of corn dogs is not zero, some are bought, thus correct solution is (5,3).
Thus the number of corn dogs bought is 3.
Answer:
The Answer is (A)
Step-by-step explanation: