Help please! I don't understand
what’s the best answer
Answer:
x = 60°y = 60°Step-by-step explanation:
it looks like an isosceles triangle, but is an equilateral triangle, 3 equal sides and 3 equal angles, you have the value of 120°, and the interior angle is 60° (180 - 120 = 60°), this angle is equal to angle y.
y = 60*
the sum of the interior angles of a triangle is 180°
180 - 60 - 60 = 60°
x = 60°
Need help with the top part and please explain
Answer:
Hope this helps!
Step-by-step explanation:
y=6x+4 is linear but not proportional because it doesn't have any exponents causing it to be Linear ....it is not proportional because it is not in y=mx form
y=8x is linear and proportional because it is in y=mx form and doesn't have any exponents
y=x-3 is linear and not proportional because it is not in y=mx form it is not proportional ..... it is linear because it has no exponents
y=9x^2+1 is not linear and is not proportional....it is not linear because it has an exponent and not proportional because it is not in y=mx form
A moving van rents for $29.95 a day plus $.12/mi.Mmi.Ms Smiths bill for a two day rental was $70.46. how many miles did she drive
Answer:
She drove 88 miles
Step-by-step explanation:
Total cost = fee per day + cost per mile * miles driven
We know the total cost was 70.46
The fee per day was 29.95 *2 =59.90. She kept the van 2 days.
The cost per mile was .12
Substitute in what we know
70.46 = 59.90 +.12 m
Subtract 59.90 from each side
70.46-59.90 = 59.90-59.90 +.12 m where m is the miles driven
10.56 = .12m
Divide each side by .12
10.56/.12 = .12m/.12
88=m
PLEASE AWNSER A prize machine randomly dispenses small toys. There are 15 prizes left:
5 bouncy balls, 3 toy cars, 2 stickers, and 5 dinosaurs.
Kai gets 2 prizes. What is the probability that they are both toy cars?
awnser choices are 3/70 1/35 3/75 and 2/70
Answer:
1/35
Step-by-step explanation:
Probability the first prize is a toy car
There are 3 toy cars and 15 prizes.
3/15 = 1/5
Probability the second prize is a toy car
Since we now have a toy car, there are are 2 toy cars left and only 14 prizes.
2/14 = 1/7
We have two events, so we multiply the probabilities.
1/5 * 1/7 = 1/35
The probability of getting 2 toy cars is 1/35
The rental rate for a cement mixer has a flat rate of $40 plus $20 for each day of the rental. The graph shows points representing the total cost of the rental. A function graph of a ray with three points (0,40), (2,80) and (3, 100) with an x axis of zero to five Days and a y axis of zero to one hundred forty in Total Cost Which linear equation, in slope-intercept form, that models the total cost of the rental over time? y = 50x + 25 y = 75x y = 20x +40 y = x + 50 y = 25x
Answer:
y = 20x + 40
Step-by-step explanation:
Given that the rental rate for a cement mixer has a flat rate of $40 plus $20 for each day of the rental.
That means fixed one time cost is $40 which doesn't changes with time.
If number of days is represented by "x" then rental cost for "x" days will be 20 times x or just 20x.
So the final cost will be sum of fixed cost and the rental cost per day which is:
20x+40
Now if "y" represents total rental cost over time then final cost equation can be written as:
y = 20x + 40
Hence final answer is y = 20x + 40y = 20x + 40.
Answer:The answer is Y=20x+40
A school has a hurdle track that is of one fifth of a mile long. They are considering extending the track to be one fourth of a mile long. The committee wants to know the unit rate of length in the longer track per mile of length in the shorter track to make sure they have enough hurdles for the longer track. What is the unit rate?
Answer:
Step-by-step explanation:
24
What is the correlation coefficient with the following data points: (15,36), (13,22), (12,6), (11,20)?
A.0.75
B.-0.75
C.0.65
D.-0.65
Answer:
A. 0.75
Step-by-step explanation:
The formula for the correlation coefficient r is
[tex]r =\frac {n \sum{xy} - \sum{x}\sum{y}}{\sqrt{[n \sum{x^{2}}- (\sum{x})^{2}}][n \sum{y^{2}}- (\sum{y})^{2}]}[/tex]
It's easier to use a statistical calculator, but this question probably expects you to do it by hand.
Let’s write a table for easy calculation.
x y xy x² y²
15 36 540 225 1296
13 22 286 169 484
12 6 72 144 36
11 20 220 121 400
51 84 1118 659 2216
(Σx)² = 2601
(Σy)² = 7056
[tex]r =\frac{4\times1118-51\times84}{\sqrt{[4\times659-2601][4\times2216-7056]}}[/tex]
[tex]r =\frac{4472-4284}{\sqrt{[2636-2601][8864-7056]}}[/tex]
[tex]r =\frac{188}{\sqrt{35\times1808}}[/tex]
[tex]r =\frac{188}{\sqrt{63280}}[/tex]
[tex]r =\frac{188}{251.6}[/tex]
r = 0.747
The graph below shows that there is a poor correlation among the points.
Factor the quadratic expression t^2 + 4t - 7
Answer:
Not factorable.
Step-by-step explanation:
We have a trinomial (3 terms). We factor by splitting the middle term 4t into factors of -7 (the last term) which add to 4.
-7 = 1 * -7
4t= 1t+-7t doesn't work
4t=-1t+7t doesn't work
This is not factorable.
Answer:
(t + 7) • (t - 11)
Step-by-step explanation:
Determine the net force acting on the object (represented by the solid circle) in this diagram
A.100 N to the Right
B.200 N to the left
C.300 N to the left
D.400vN to the Right
Answer:
I think it is B
Step-by-step explanation:
what is the slope of the line i ready
The slope of the given line, determined from the graph and the point-slope form, is -0.5.
The slope of a line is a measure of its steepness. To determine the slope from a graph, you can use the point-slope form and the slope-intercept form of a linear equation.
Given a graph with points (0,1) and (0.5,0), you can calculate the slope as follows:
Use the point-slope form of a linear equation:
(y - y1) / (x - x1) = (y2 - y1) / (x2 - x1)
Where (x1, y1) and (x2, y2) are points on the line.
Plug in the coordinates of the given points:
(y - 1) / (x - 0) = (0 - 1) / (0.5 - 0)
Simplify:
(y - 1) / x = -1 / 0.5
Further simplify:
2(y - 1) = -x
Rearrange to isolate y:
2y - 2 = -x
2y = -x + 2
y = (-1/2)x + 1
Compare this equation to the slope-intercept form, y = mx + c. In this case, the slope (m) is -1/2, which is equivalent to -0.5.
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The question probable may be:
what is the slope of the line
Help now please help help help
Answer:
r>7
Step-by-step explanation:
Subtract 2.92.9 from both sides
-1.3-2.9>-0.6r−1.3−2.9>−0.6r
Simplify -1.3-2.9−1.3−2.9 to -4.2−4.2
-4.2>-0.6r−4.2>−0.6r
Divide both sides by -0.6−0.6
\frac{-4.2}{-0.6}<r
−0.6
−4.2
<r
Simplify \frac{-4.2}{-0.6}
−0.6 −4.2 to 77
7<r
Switch sides
r>7
38 plus 22 times 36
Answer:
830
Step-by-step explanation:
38+(22*36)
start with parenthesis first so multiply 22* 36= 792
then add the 792+38 and get 830
A wooden board is leaning against a building. The base of the board is 4 feet from the base of the building, and the base of the board forms a 65 degree angle with the ground.
What is the length of the wooden board?
_____ft
Answer:
The length of wooden board = 9.4648 feet.
Step-by-step explanation:
The wooden board makes a Right triangle with the building in which we have wooden board as hypotenuse, building as opposite side, and ground as adjacent side, the angle of elevation is 65 degrees.
Given adjacent side = 4 feet and elevation angle = 65 degrees.
We can use cosine formula in right triangle as follows:-
Cos(65°) = Adjacent / Hypotenuse
cos(65°) = 4 / Hypotenuse
Hypotenuse = 4 / cos(65°)
Hypotenuse = 9.464806333 feet.
Hence, the length of wooden board = 9.4648 feet.
Final answer:
To find the length of the wooden board which forms a 65-degree angle with the ground and has its base 4 feet from the building, use the cosine function to calculate the hypotenuse of the right triangle formed. The length of the board is approximately 9.06 feet.
Explanation:
To find the length of the wooden board leaning against a building, we can use trigonometry. Since the base of the board forms a 65-degree angle with the ground, and the distance from the base of the building to the base of the board is 4 feet, we have a right-angled triangle where we know the angle and the adjacent side.
Step-by-step solution:
Identify the right triangle formed by the board, the ground, and the wall of the building.
Use the cosine function which relates the adjacent side and hypotenuse in a right triangle. The cosine of an angle is equal to the length of the adjacent side divided by the length of the hypotenuse (cos(θ) = adjacent/hypotenuse).
Rearrange the formula to solve for the hypotenuse: hypotenuse = adjacent/cos(θ).
Plug in the values: hypotenuse = 4 ft / cos(65°).
Calculate the length using a calculator: hypotenuse ≈ 4 ft / cos(65°) ≈ 9.06 ft.
The length of the wooden board is approximately 9.06 feet.
What is the equation in point-slope form of the line that passes through the point (−1, −4) and has a slope of –3
Point-slope form:
y - y₁ = m(x - x₁) "m" is the slope
You know:
m = -3
(x₁ , y₁) = (-1, -4)
So you can plug this into the equation:
y - y₁ = m(x - x₁)
y - (-4) = -3(x - (-1)
y + 4 = -3(x + 1)
Solve the following equation for x.
(x-5)/ 2 = 6
Answer:
x = 17
Step-by-step explanation:
Answer:
Solve the following equation for x.
(x-5)/ 2 = 6 x=17
Geometry Question Answer Quick:
Answer:
BC =10
AC = 13.661
Step-by-step explanation:
We can use the law of sines to solve this problem
sin C sin B sin A
---------- = ---------- = ---------
AB AC BC
Lets substitute in what we know
sin 30 sin B sin 45
---------- = ---------- = ---------
5sqrt(2) AC BC
We can calculate angle B because all three angles have to add to 180
A+B+C = 180
45+B + 30 = 180
75+B=180
Subtract 75 from each side
75-75+B=180-75
B =105
sin 30 sin 105 sin 45
---------- = ---------- = ---------
5sqrt(2) AC BC
Using cross products and the first and third columns
BC sin 30 = 5 sqrt (2) sin 45
BC * .5 = 5 sqrt(2) * 1/2 sqrt(2)
1/2 BC = 5
Multiply by 2
2*1/2 BC = 5 *2
BC =10
Using cross products and the first and second columns
BC sin 30 = 5 sqrt (2) sin 105
sin 105 is really ugly as an exact answer
.5 AC = 5 sqrt(2) .966
Divide by .5
AC = 5 sqrt(2) .966/.5
AC = 13.661
Answer:
BC = 10
AC = 13.66
Step-by-step explanation:
Remark
Both sides are found using the law of sines
Formula BC
Sin(45)/BC = Sin(30)/(5√2)
Solution for BC
Sin(30) = 0.5
Sin(45) = √2 / 2
√2/2 // BC = 0.5/(5√2) Cross multiply√2/2 * 5√2 = 0.5 * BC Simplify the left2 * 5/2 = 0.5 * BC Cancel the 2s on the left5 = 0.5 * BC Divide both sides by 0.55/0.5 = 0.5/0.5 * BC Do the division10 = BCSolution for AC
<B = 180 - 30 - 45<B = 105Sin(105)/AC = Sin(45)/10Sin(105) = 0.9659Sin(45) = 0.70710.9659/AC = 0.7071/10 Cross multiply10*0.9659 = 0.7071 * AC9.659 = 0.7071 * AC Divide by 0.7079.659/0.7071 = ACAC = 13.66help please guys I need help with this question I'm stuck
Answer:
5:3 AND 10:6
Step-by-step explanation:
_________________[tex]Hope this helps! <3[/tex]_____________________________
perform the indicated operation a-a^4/a^2+a+1
To simplify the given expression, subtract the terms in the numerator, and then simplify the terms in the denominator. Finally, divide the numerator by the denominator.
Explanation:To perform the indicated operation a-a^4/a^2+a+1, we need to simplify the expression using the order of operations. First, we simplify the terms in the numerator: a - a^4. Then, we simplify the terms in the denominator: a^2 + a + 1. Finally, we divide the simplified numerator by the simplified denominator to get the final answer.
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To perform the given operation, we need to follow the order of operations and simplify the exponents before performing the division, addition, and subtraction.
Explanation:To perform the indicated operation a - a^4 / a^2 + a + 1, we need to follow the order of operations, which is often remembered using the acronym PEMDAS. This stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).
Simplify the exponents: a^4 = a * a * a * a and a^2 = a * a.Perform the division: a^4 / a^2.Perform the addition: a^2 + a + 1.Perform the subtraction: a - (result of division) / (result of addition).Learn more about Order of Operations here:https://brainly.com/question/15840745
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A six-sided die with sides labeled 1 through 6 will be rolled once. Each number is equally likely to be rolled.
What is the probability of rolling a number greater than 2?
Write your answer as a fraction.
Answer:
2/3
Step-by-step explanation:
Given that a six sided die with sides labelled with numbers 1,2,3,4,5 and 6 is rolled once.
Since die is said to be equally likely for each number, die is unbiased
P(1) = P(2)=...=P(6) = 1/6
For a number greater than 2, we must not include 2 and hence numbers can be 3 or 4 or 5 or 6
Probability of rolling a number >2 = Probability of rolling 3 or 4 or 5 or 6
= P(3)+P(4)+P(5)+P(6)
= 1/6+1/6+1/6+1/6
=4/6
=2/3
Required probability = 2/3
The probability of rolling a number greater than 2 on a six-sided die is 2/3. This is because there are 4 numbers greater than 2 on the die and the total number of possible outcomes when the die is rolled is 6.
Explanation:The subject of this question is probability, a topic in mathematics. To solve this problem, we need to first understand the total possible outcomes when rolling a six-sided die. The outcomes are the numbers 1 through 6, so we have 6 possible outcomes.
To find the probability of rolling a number greater than 2, we need to determine how many outcomes match this condition. The numbers greater than 2 on a six-sided die are 3, 4, 5, and 6. So, there are 4 favorable outcomes.
Probability is calculated by dividing the number of favorable outcomes by the total number of outcomes. So, the probability of rolling a number greater than 2 on a six-sided die is 4/6, which simplifies to 2/3.
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plz help me Thx so much
Answer:
shipping and handling is 18.90 dollars
Step-by-step explanation:
percent means "per one hundred", so any percent can be written as a fraction over 100
30% = 30/100 = 0.30
Multiply 0.30 with the price 63 to get 0.30*63 = 18.90, which is the cost of shipping only. This result is added on top of the 63 dollars to get the total cost.
Answer:
18.90
Step-by-step explanation:
We need to figure out the cost of shipping and handling
shipping and handling = original price * percent
= 63* .3
=18.90
can u plz answer questions 5 through8 plz thank u so much
Question 5: 4) 2006-2012
Question 6: 8x^2+8x+1
Question 7: 2) 2
Question 8: a is picture on top, b is picture on bottom
12,192÷48 long division
Answer:
254
Hope this helps you!!! :)
can someone help me out?
13. Solve –5√ x = –15. A. x = –9 B. x = –7 C. x = 9 D. x = 7
[tex]Domain:x\geq0\\\\-5\sqrt{x}=-15\qquad\text{divide both sides by (-5)}\\\\\sqrt{x}=3\to \boxed{x=9}\to\boxed{C.}[/tex]
Lindsay has two packages she wants to mail one package weighs 6.3 ounces and the other packages Weighs 4.9 ounces how much do the packages weigh together
Answer:
Your answers is 11.2 OUNCES!
Step-by-step explanation:
Error, Wont let me show work, But the answer is 11.2 OUNCES, I'm positive! :)
The total weight in ounces of the entire packages of Lindsay is 11.2 ounces.
Given data:
Lindsay has two packages which weighs 6.3 ounces and 4.9 ounces respectively.
To find the total weight of the two packages, add the individual weights together.
Package 1 weight: 6.3 ounces
Package 2 weight: 4.9 ounces
Total weight = Package 1 weight + Package 2 weight
On simplifying the equation:
Total weight = 6.3 ounces + 4.9 ounces
Total weight = 11.2 ounces
Hence, the packages weigh together a total of 11.2 ounces.
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Approximately how many liters are in 18 quarts
Answer:18 us liquid quarts =
17.034 liters
Step-by-step explanation:
1 us liquid quart =
0.946 liter
Multiply 0.946 *18 =17.034
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A bar of soap weighs 3.8 ounces.The ingredient glycerin makes up 0.4 of the weigh of the soap.What is the weigh of the glycerin in the bar of soap
Answer:
Step-by-step explanation:
.4/3.8= 10.52/100
the amount of glycerin in the bar of soap is 10.5263158
Answer:
1.52 oz
Step-by-step explanation:
The glycerin makes up 4/10 of the weight of the soap. Since the soap weighs 3.8 oz. then the glycerin makes up
4/10 * 3.8 = 1.52 oz
A car salesman has
5 used cars for sale. They have a mean price of $7000
. What is the total price of all 5
cars?
Step-by-step explanation:
We are given total number of cars = 5 cars.
The mean of all of five cars = $7000.
Note: Total sum/value could be calculated by multiplying mean with the total numbers we have.
Total price = Mean × Total number of cars.
According to problem, mean is 7000 and total number of cars is 5.
Therefore, Total price of all 5 cars = 7000 × 5 = $35000.The total price of all 5 cars is $35000, calculated by multiplying the mean price ($7000) by the number of cars (5).
Explanation:The subject of this question is Mathematics, specifically mean and total values. The mean price of the cars is given as $7000. The mean is calculated by dividing the total price by the number of items, in this case, cars. To find the total price, we therefore multiply the mean price by the number of cars. So, $7000 (mean price of each car) times 5 (total cars) equals $35000. Therefore, the total price of all 5 cars is $35000.
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Daisha finished her homework at 5:05 after spending 40 minutes on her homework what time did Daisha start her homework show your strategy below
Answer:
Daisha started her homework at 4:25
Step-by-step explanation:
I first take off the 5 minutes after 5:00 (i will add it back later)
Then i subtract 40 from 60 (60 minutes = 1 hour) and 20 minutes is left.
i then add the 5 minutes to the 20 minutes and get 25 minutes.
Since she had already been doing her homework for 40 min. and was not about to do it, i can say she started at 4:25.
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