Answers
you plus 4 friends = 5 people
them multiply 5 by m sp you get 5m
D is the correct answer
Related Questions
A number cube is rolled 30 times, and a six comes up 5 times. What is the experimental probability that a six is rolled?
Answers
(1/6)=(5/30)=p
The probability of the cube landing on the number 6 five times is 1 out of 6
How is the theme of deception introduced twice in this scene?
Answers
1: -(5x + 7) + 1 = -5x -5
2: 4x - 7 + 2x = 2(3x - 3) - 1
3: -4x - 2 = -2(1 - 4x)
Answers
-5x -6 = -5x + 5
-5x - 6 + 6 = -5x +5 + 6
-5x = -5x +11
-5x + 5x = -5x + 5x + 11
0 does not equal 11 so there is not solution to number 1 or you can write 0 does not equal 11.
2. 4x - 7 + 2x = 2(3x-3) -1
6x - 7 = 6x -6 -1
6x -7 + 7 = 6x -7 + 7
(6x = 6x) / 6
x = x; this is an identity which means x can be any real number and the value will still be equal.
3. -4x -2 = -2(1 - 4x)
-4x - 2 = -2 + 8x
-4x - 2 + 2 = -2 + 2 + 8x
(-4x = 8x) / -4
x = -2x ; there is no real answer
Find the center and radius for the circle defined by the equation x^2 + y^2 + 5x -y + 2
Answers
Center is (-2.5, 0.5)
Radius is 2.12 units
Note: the value of the radius is approximate and rounded to 2 decimal places
If you need the exact value in terms of a square root, then the exact radius is sqrt(4.5) units long where 'sqrt' stands for 'square root'
-----------------------------------
-----------------------------------
Work Shown:
We need to complete the square for the x and y terms
x^2 + y^2 + 5x - y + 2 = 0
(x^2 + 5x) + (y^2 - y) + 2 = 0
(x^2 + 5x + 6.25 - 6.25) + (y^2 - y) + 2 = 0 .... see note1 below
(x^2 + 5x + 6.25 - 6.25) + (y^2 - y + 0.25 - 0.25) + 2 = 0 .... see note2 below
(x^2 + 5x + 6.25) - 6.25 + (y^2 - y + 0.25) - 0.25 + 2 = 0
(x^2 + 5x + 6.25) + (y^2 - y + 0.25) + (-6.25 - 0.25 + 2) = 0
(x^2 + 5x + 6.25) + (y^2 - y + 0.25) - 4.5 = 0
(x + 2.5)^2 + (y - 0.5)^2 - 4.5 = 0
(x + 2.5)^2 + (y - 0.5)^2 = 4.5
So the center is (-2.5, 0.5) and the radius is roughly 2.12 units, which is the result of taking the square root of 4.5
sqrt(4.5) = 2.12132 approximately and that rounds further to 2.12
----------------------
Note1: I took half of the x coefficient 5 to get 2.5, then I squared that to get 6.25. This value is added and subtracted on the same side to keep things balanced. The goal of doing all this to complete the square for the x terms
Note2: Similar to note1 above, but this time it's for the y terms. In this case, the y coefficient is -1. Half of that is -0.5 which squares to 0.25. The value of 0.25 is added and subtracted on the left side to keep things balanced.
Jalen has a balance of $1870 on a credit card with an APR of 19.7%, compounded daily. About how much will he save in interest over the course of a year if he transfers his balance to a credit card with an APR of 16.5%, compounded monthly. (Assume that Jalen makes no payments or new purchases during the year, and ignore any possible late payment fees.)
Answers
A=p (1+r/k)^kt
A future value
P present value
R interest rate
K compounding periods
T time
When the compounding periods are daily balance after one year is
A=1,870×(1+0.197÷365)^(365×1)
A=2,277.06
When the compounding periods are monthly balance after one year is
A=1,870×(1+0.165÷12)^(12×1)
A=2,202.99
So will save
2,277.06−2,202.99
=74.07....answer
Hope it helps!
On average, at least 25,000 pieces of luggage are lost or misdirected each day by United States airlines. Of these, 98% are located by the airlines within 5 days. From a given day’s lost luggage, at least how many pieces of luggage are still lost after 5 days?
Answers
To find the number of luggage still lost after 5 days, at least 2% of the given day's lost luggage will still be lost after 5 days.
Explanation:To find the number of luggage still lost after 5 days, we can use the concept of complementary events.
Since 98% of lost luggage is located by the airlines within 5 days, that means 2% of the lost luggage is still not located.
Therefore, at least 2% of the given day's lost luggage will still be lost after 5 days.
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A group of students is investigating whether copper is a better thermal conductor than steel. The students take a copper wire and a steel wire of the same length and diameter. They put equal lengths of wax on one end of each wire and dip the other end into a beaker of hot water. The length of wax left on the wires after 10 minutes is shown.
Experimental Observations
Copper Steel
Original length of wax: 3 cm 3 cm
Length of wax after 10 minutes: 0.7 cm 1.8 cm
What was the dependent variable in this experiment?
Type of wire used
Original length of wire
Original length of wax
Thermal conductivity of wire
Answers
The correct dependent variable in this experiment is the Length of wax after 10 minutes.
In the context of an experiment, the dependent variable is the variable that is being measured or tested in the experiment. It is the outcome that the experimenters are interested in observing to determine the effect of the independent variable.
In this case, the students are investigating the thermal conductivity of copper and steel wires by observing how much wax melts over a fixed period of time when the wires are heated. The independent variable is the type of wire used (copper or steel), as this is what the students are changing to see its effect on the dependent variable.
The dependent variable is the length of wax remaining after 10 minutes because this measurement is expected to change based on the thermal conductivity of the wire. The better the thermal conductor, the more heat will be transferred along the wire, and the more wax will melt. Since the students are measuring how much wax has melted (by subtracting the length of wax after 10 minutes from the original length), this is the dependent variable.
The original length of wire and the original length of wax are control variables; they are kept constant to ensure that any differences in the dependent variable are due to the independent variable (the type of wire) and not due to other factors. The thermal conductivity of the wire is a property being indirectly measured through the observation of the dependent variable. It is not directly measured and thus is not the dependent variable.
Find the area in the right tail more extreme than z= 3.01 in a standard normal distribution
Answers
To find the area in the right tail more extreme than z= 3.01 in a standard normal distribution, we calculate the p-value as the probability of observing a value more extreme than the test statistic. In this case, the p-value is approximately 0.0103.
Explanation:The p-value, in statistics, measures the probability of obtaining results as extreme or more extreme than the observed data, assuming the null hypothesis is true. A smaller p-value suggests stronger evidence against the null hypothesis, typically indicating statistical significance and supporting the alternative hypothesis.
To find the area in the right tail more extreme than z = 3.01 in a standard normal distribution, we need to calculate the p-value.
The p-value is the probability of observing a value more extreme than the test statistic.
In this case, we use the formula P(Z > z) to find the area in the right tail. Using the information given, P(Z > 3.01) ≈ 0.0103.
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To find the area in the right tail more extreme than z= 3.01 in a standard normal distribution, we calculate the p-value as the probability of observing a value more extreme than the test statistic. In this case, the p-value is approximately 0.0103.
Explanation:The p-value, in statistics, measures the probability of obtaining results as extreme or more extreme than the observed data, assuming the null hypothesis is true. A smaller p-value suggests stronger evidence against the null hypothesis, typically indicating statistical significance and supporting the alternative hypothesis.
To find the area in the right tail more extreme than z = 3.01 in a standard normal distribution, we need to calculate the p-value.
The p-value is the probability of observing a value more extreme than the test statistic.
In this case, we use the formula P(Z > z) to find the area in the right tail. Using the information given, P(Z > 3.01) ≈ 0.0103.
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To find the area in the right tail more extreme than z= 3.01 in a standard normal distribution, we calculate the p-value as the probability of observing a value more extreme than the test statistic. In this case, the p-value is approximately 0.0103.
Explanation:The p-value, in statistics, measures the probability of obtaining results as extreme or more extreme than the observed data, assuming the null hypothesis is true. A smaller p-value suggests stronger evidence against the null hypothesis, typically indicating statistical significance and supporting the alternative hypothesis.
To find the area in the right tail more extreme than z = 3.01 in a standard normal distribution, we need to calculate the p-value.
The p-value is the probability of observing a value more extreme than the test statistic.
In this case, we use the formula P(Z > z) to find the area in the right tail. Using the information given, P(Z > 3.01) ≈ 0.0103.
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what is the measure of ∠J?
Given △ABC≅△JKL, m∠B=55°, and m∠L=25
Answers
m < B = 55....so < K = 55 also
m < L = 25.....so < C = 25 also
so we need the measure of < J....and < A
interior angles of a triangle add up to 180 degrees
< J + < K + < L = 180
< J + 55 + 25 = 180
< J + 80 = 180
< J = 180 - 80
< J = 100......so < J = 100....and so does < A
The following triangle CAT is transformed using a translation: Triangle CAT is shown. C is at 0, 0, A is at negative 2, 1, T is at negative 1, 4. Which could be coordinates of C'A'T' after the translation? (4 points) Select one: a. C=(0,0), A=(2,1), T=(1,4) b. C=(2,0), A=(0,1), T=(1,4) c. C=(0,0), A=(−1,−2), T=(−4,−1) d. C=(−2,0), A=(−1,0), T=(−4,1)
Answers
the answer would be b. C=(2,0), A=(0,1), T=(1,4)
all x's move 2 to the right and no change in y
Solution: If a shape is being translated neither it's shape nor size changes.When we translate a shape we just move a shape or geometrical figure by certain distance either horizontally or vertically or both horizontally and vertically.
Coordinates of Triangle CAT is →C(0,0), and A(-2,1), and T(-1,4).
In option (a) vertices C has not been translated , but A and T are translated.Which is Untrue because we have to move all the vertices by same value. But x and y can have different value.
In option (b) all the coordinates C,A,and T is being translated along→ x by 2 units , horizontally right, but not translated in vertical direction.
C(0,0)⇒C(0+2,0+0)→C(2,0)
A(-2,1)⇒C(-2+2,1+0)→C(0,1)
T(-1,4)⇒C(-1+2,4+0)→C(1,4)
In option C, Coordinates of A and B are changed but not of C, So in this case translation can't happen.
In option D , C is being translated 2 units horizontally left , but amount of translation in A and T are different.
So , Option (b) is true.
Which situation is mostly a constant rate of change?
Answers
Answer:B
Step-by-step explanation: The distance traveled by a truck driving at a constant speed compared with time.
PLZ HELP ASAP
8 ÷ 16 = 48 because A) 288 × 1/6 = 48 B) 80 × 1/10 = 8 C) 64 × 1/8 = 8 D) 48 × 1/6 = 8
Answers
Answer:
D)48 × 1 6 = 8 Use the relationship between multiplication and division to explain that 8 ÷ 1 6 = 48 because 48 × 1 6 = 8.
Step-by-step explanation:
Find the ratio a:b, if it is given that ... 2a-3b/5 = a+b/3
Answers
30a-9b=15a+5b
15a=14b
Ratio is 15:14
What is the end behavior of f(x) = |3x - 2| + 4?
Answers
Answer:
It rises to the left and rises to the right.
Step-by-step explanation:
Select the classification of the polynomial using its degree and number of terms.
9x − 3y + 7
The polynomial is classified as a
-quadratic trinomial
-linear monomial
-linear trinomial
Answers
Your football team gained four yards on the first down into yards on the second down during its last possession which number is the additive inverse of yards gained
A-2
B -6
C 4
d 6
Answers
Answer:
B. -6
Step-by-step explanation:
There is a mistake in the question. It would have to say:
Your football team gained four yards on first down and two yards on second down during its last possession
So, your team gained 4 + 2 = 6 yards.
Calling x, the additive inverse of 6, the following equation must be satisfied:
6 + x = 0
x = 0 - 6
x = -6
Let x represent any year write an inequality in terms of x and 1822 that is true only for values of x that represent years before the year that Brazil started its war for independence and
Answers
I just did it.
On a family trip, 100 miles were traveled at a rate of 60 miles per hour and another 30 miles at 40 miles per hour , what is the average speed for this trip
Answers
here total distance = 100+30 = 130 miles
time = distance / speed
time for step 1 = t1 = 100/60 = 1.6667 hours
time for step 2 = t2 = 30/40 = 0.75 hours
so total time = t = t1+t2 =2.416667hours
put values of distance and time in equation (i) we get
average speed = 130 / 2.416667 = 53.79 = 53.8 miles per hour
The average speed for the trip is calculated by using the formula of total distance divided by total time. For a total distance of 130 miles and total time of 2.42 hours, the average speed is approximately 53.72 mph.
Explanation:In order to find the average speed for the entire trip, we need to use the formula which is total distance travelled divided by the total time taken. The total distance travelled is 100 miles at 60mph plus 30 miles at 40mph, which results in 130 miles.
Now, to find the total time taken, we divide the distance travelled by the speed, which is 100 miles at 60mph results in 1.67 hours and 30 miles at 40mph results in 0.75 hours. Hence, the total time taken is the sum of these two times which is 2.42 hours.
Applying the formula for average speed, i.e., total distance divided by total time, we get 130 miles divided by 2.42 hours results in approximately 53.72 mph which is the average speed for the trip.
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Veronica deposited $21 in a savings account that earns 2.4% simple interest. Which graph represents this scenario?
Answers
Answer:
The below graph represents this scenario.
Step-by-step explanation:
Given,
The deposited amount, P = $ 21,
Annual interest rate, r = 2.4 % = 0.024,
Thus, the simple interest after x years,
[tex]y=P\times r\times t[/tex]
[tex]=21(0.024)(x)[/tex]
[tex]=0.0504x[/tex]
If x-axis shows the number of years and y axis represents the simple interest after x years,
So, y = 0.0504x is a line passes through the origin which will show the given scenario,
( shown below )
Also, x ≥ 0 ( number of years can not be negative )
Which of the following is a step in constructing a circle circumscribed about a triangle?
a. Use a compass to locate the intersection of the midpoint of each side.
b. Use the perpendicular bisectors to find the center of the circle.
c. Use a compass to locate the intersection of the altitude of each side.
d. Use the angle bisectors to find the center of the circle.
Answers
Answer:
Answer B is correct
find × in this proportion 16/X = x/4
x=
a. 64
b. 32
c. 16
d 8
Answers
Answer:
d
Step-by-step explanation:
The proportion given to us is
[tex]\frac{16}{x} =\frac{x}{4}[/tex]
Next we cross multiply to get
[tex]16*4=x*x[/tex]
[tex]64=x^2[/tex]
[tex]x^2=64[/tex]
Take the sqrt on both side to get x
so
[tex]\sqrt{x^2} = \sqrt{64}[/tex]
x=8
so the correct option is d .
A right triangle has side lengths AC = 7 inches, BC = 24 inches, and AB = 25 inches.
What are the measures of the angles in triangle ABC?
a) m∠A ≈ 46.2°, m∠B ≈ 43.8°, m∠C ≈ 90°
b) m∠A ≈ 73.0°, m∠B ≈ 17.0°, m∠C ≈ 90°
c) m∠A ≈ 73.7°, m∠B ≈ 16.3°, m∠C ≈ 90°
d) m∠A ≈ 74.4°, m∠B ≈ 15.6°, m∠C ≈ 90°
Answers
m∠A =73.7°
m∠B = 16.3°
m∠C = 90°
Answer:
(C)
Step-by-step explanation:
It is given that a right triangle, ACB which is right angled at C has BC = 24 inches, and AB = 25 inches.
We know that m∠C=90°,
Using the trigonometry in ΔACB, we have
[tex]sinB=\frac{AC}{AB}[/tex]
Substituting the given values, we get
⇒[tex]sinB=\frac{24}{25}[/tex]
⇒[tex]B=sin^{-1}(0.96)[/tex]
⇒[tex]B=73.7^{\circ}[/tex]
Also, [tex]sinA=\frac{CB}{AB}[/tex]
Substituting the given values, we get
⇒[tex]sinA=\frac{7}{25}[/tex]
⇒[tex]A=sin^{-1}(0.28)[/tex]
⇒[tex]A=16.3^{\circ}[/tex]
Therefore, the measure of the angles in triangle ABC are m∠A ≈ 73.7°, m∠B ≈ 16.3°, m∠C ≈ 90°.
Thus, option C is correct.
A jet ski company charges a flat fee of $24.00 plus $2.25 per hour to rent a jet ski. Another company charges a fee of $23.00 plus $2.50 per hour to rent the same jet ski.
Using a graphing calculator, find the number of hours for which the costs are the same. Round your answer to the nearest whole hour. (1 point)
A• 2
B• 8
C• 4
D•3
Answers
Let
x----------> charge per hour to rent a jet sky in dollars
y----------> the total cost to rent a jet sky in dollars
we know that
First Jet Sky Company
[tex]y=24.00+2.25x[/tex] ---------> equation [tex]1[/tex]
Second Jet Sky Company
[tex]y=23.00+2.50x[/tex] ---------> equation [tex]2[/tex]
we know that
To find the number of hours for which the costs are the same
equate equation [tex]1[/tex] and equation [tex]2[/tex]
The intersection both graphs is the solution of the problem
using a graph tool
see the attached figure
the intersection point is [tex](4,33)[/tex]
That means
For [tex]x=4\ hours[/tex]
the cost of the rent is [tex]y=\$33[/tex] in both companies
therefore
the answer is
[tex]4\ hours[/tex]
For 4 hours of booking, the charges paid to both the companies should be same. And the charge will be $ 30.
Let x be the number of hours of booking per jet ski.
First company charges $24.00 plus $2.25 per hour to rent a jet ski.
So, the total cost paid for x hours to the first company will be,
[tex]C_1=24+2.25x[/tex]
Second company charges a fee of $23.00 plus $2.50 per hour to rent the same jet ski.
So, the total cost paid for x hours to the second company will be,
[tex]C_2=23+2.5x[/tex]
Now, the charge paid to both the companies should be same. For this condition, the number of hours of booking per jet ski should be,
[tex]C_1=C_2\\24+2.25x=23+2.5x\\1=0.25x\\x=4[/tex]
Therefore, for 4 hours of booking, the charges paid to both the companies should be same. And the charge will be,
[tex]24+2.25\times4=\$33[/tex].
For visuals, refer the attached graph.
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Help please thanks!!!!!!!!!!!
Answers
A) is WRONG: since the population is INCREASING, then r > 0
B) is incomplete: since the value of C depends ALSO on r (that is missing)
C) is Wrong: since only r is a percentage and NOT 1+r
D) WRIGHT: Prove:
C(t) = P(1+r)^t if t = 0 then C₀ = P(1+r)⁰ or
any number with zero exponent is EQUAL to 1, so
C₀ = P(1+r)⁰ → C₀ = P(1) = P
Answer:
P represents the population in year 0
Step-by-step explanation:
use the triangle to answer the question.
Which equation shows a correct relationship of trigonometric functions?
sin x/cos y=0
sin x/ cos x =0
sin x/ cos x =1
sin x/ cos y =1
Answers
---------------------------------------------
---------------------------------------------
Label the sides as shown in the image attachment.
P = horizontal leg (opposite of angle x; adajcent to angle y)
Q = vertical leg (opposite of angle y; adajcent to angle x)
R = hypotenuse (longest side; always opposite the 90 degree angle)
Use the definitions of sine and cosine to say...
sin(Angle) = opposite/hypotenuse
sin(x) = P/R
and
cos(angle) = adjacent/hypotenuse
cos(y) = P/R
Notice how sin(x) = cos(y). This is true any time x+y = 90 which is the case here (x and y are complementary angles). A more specific example is sin(30) = cos(60) which are both equal to 1/2 or 0.5
Since sin(x) = cos(y), this means sin(x)/cos(y) = 1 as any expression divided by itself is equal to 1. Keep in mind that cos(y) cannot equal zero.
This is why choice D is the final answer.
side note: something like cos(x)/sin(y) or sin(y)/cos(x) or similar are all equal to 1 as long as x+y = 90
One angle of an isosceles triangle measures 100°. which other angles could be in that isosceles triangle? choose all that apply. 20° 30° 50° 40° submit
Answers
180 - 100= 80
80 ÷ 2 = 40
Triangle is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
The other angles in the isosceles triangle are 40°.
Option D is the correct answer
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
Isosceles triangle:
One angle = 100°
We know that,
In an isosceles triangle, there are two equal sides and two equal angles opposite to the equal sides.
The sum of the three angles in the isosceles triangle is 180.
We already have,
One angle = 100°
The other two should be equal.
The sum should give us 180°.
Now,
40 + 40 = 80
100 + 80 = 180°
Thus,
The other angles in the isosceles triangle are 40°.
Option D is the correct answer
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What is the difference between the profits Mr.Brown's store earned in the first quarter and the third quarter?
a. $2,411.44
b. $2,814.64
c. $3,004.54
d. $3,214.78
Answers
Answer:
Option a. $2,411.44
Step-by-step explanation:
In the table the profit of Mr. Brown's store in all quarters of 2012 was given.
In Quarter 1 Profit was = $9,841.28
In Quarter 2 profit was = $8,957.67
In Quarter 3 profit was = $7,429.84
In Quarter 4 profit was = $11,095.67
To find out the difference between the profits earned in the first quarter and the third quarter, we subtract it.
Difference between profits = 9,841.28 - 7,429.84 = $2,411.44
Answer would be Option a. $2,411.44
I need help please ace/experts
Answers
1.
18.98 per 1000
320,000 / 1000 = 320
18.98 x 320 = $6073.60
2. smoker: 9.36 * 100 = 936
non smoker: 7.85 * 100 = 785
936 - 785 = $151
Sally is choosing what classes to take next year. She must take a math, a science, a fine arts, and a foreign language. If there are 4 math classes, 3 science classes, 5 fine arts classes, and 2 foreign languages classes to choose from, how many different schedules can she have?
Answers
the number of peaches, p, is three less then twice the number of grapes,g. which expression represents the number of peaches in terms of the number of grapes?
Answers
So p=2g-3