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Damm [24]
2 years ago
13

Terry had his car repaired at Ace Auto. He was charged $50 per hour for labor plus $150 for parts. His total bill for the repair

before tax was $375. How many hours of labor was Terry charged for?
a 2.5
b 4.5
c 7.5
d 10.5
Mathematics
1 answer:
natka813 [3]2 years ago
7 0

Answer:

4.5

Step-by-step explanation:

Lucky you, had the same test today.

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At Appalachian State University it is known that 52% of undergraduates are female. If a sample of 150 undergraduate students was
In-s [12.5K]

Answer:

a. The sampling distribution will be approximately normal.

d. The mean of the sampling distribution will be close to 52%

g. The standard deviation of the sampling distribution will be 0.0408

Step-by-step explanation:

For this problem the sample size is large enough (n>30), and then the sampling distribution \hat p would be approximately normal. The mean of the sampling distributions is given by p=0.52

The expected value for the sampling distribution would be 0.52 since E(\hat p) = p

And for the standard deviation we know that is given by:

Sd= \sqrt{\frac{p (1-p)}{n}}=\sqrt{\frac{0.52(1-0.52)}{150}}=0.0408

So the correct answers on this case are:

a. The sampling distribution will be approximately normal.

d. The mean of the sampling distribution will be close to 52%

g. The standard deviation of the sampling distribution will be 0.0408

3 0
3 years ago
The minute hand of a clock turns 6° per minute. In fifteen minutes the
Katena32 [7]

Answer:

25%

Step-by-step explanation:

15 times 6 is 90

90 is 25% of 360

8 0
2 years ago
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Help please (will give brainliest)
ycow [4]
Sin <P = opp/hyp = 12/13
m <P = 67.38 degrees
5 0
2 years ago
What is the slope of a line perpendicular to 3x- 2y= 6
Tema [17]

Answer:

y = (-2/3)x + 5

2y=3x-6 Then divide by 2. y=3/2x-6 Now it is in slope-intercept form. The slope for this particular equation is 3/2 (m). The slope of a line that is perpendicular to this would be -2/3, the negative reciprocal of 3/2.

Step-by-Step:

HOPE THIS HELPED!!!

5 0
3 years ago
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How does the Pythagorean Table help you with addition?
scZoUnD [109]

Answer:

The Pythagorean Theorem is useful for two-dimensional navigation. You can use it and two lengths to find the shortest distance. … The distances north and west will be the two legs of the triangle, and the shortest line connecting them will be the diagonal. The same principles can be used for air navigation.

Step-by-step explanation:

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3 years ago
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