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Eduardwww [97]
3 years ago
6

Every repair bill at Chuckie’s Service Spot includes a fixed charge for an estimate of the repairs plus an hourly fee for labor.

Jack paid $123 for a TV repair that required 3 hours of labor. Nina paid $65 for a DVD player repair that required 1 hour of labor.
What is the hourly fee for labor at Chuckie’s?

HINT HINT HINT
Create two ordered pairs and calculate the slope (also known as the rate of change)
Mathematics
1 answer:
lakkis [162]3 years ago
8 0

Answer:

overpriced is all I can say.....

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A research company desires to know the mean consumption of meat per week among people over age 40. A sample of 610 people over a
Papessa [141]

Answer: (3.0,\ 3.2)

Step-by-step explanation:

Confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}  (1)

, where \overline{x} = Sample mean

z_{\alpha/2}= Critical z-value

\sigma = Population standard deviation.

n= Sample size.

As per given , we have

n= 610

\sigma=1.1

\overline{x}=3.1

Significance level for 85% confidence : \alpha=1-0.85=0.15

By z-table critical two tailed z-value : z_{\alpha/2}=z_{0.075}=1.44

Put all values in (1) , we get

3.1\pm 1.44\dfrac{1.1}{\sqrt{610}}

3.1\pm 1.44\dfrac{1.1}{24.698}

3.1\pm 0.064

=(3.1-0.064,\ 3.1+0.064)=(3.036,\ 3.164)\approx(3.0,\ 3.2)

Hence, the 85% confidence interval for the mean consumption of meat among people over age 40.  = (3.0,\ 3.2)

5 0
4 years ago
What quadrilaterals have at least one pair of parallel sides?
Romashka [77]
The trapezoid has one pair of parallel sides. 
4 0
3 years ago
Read 2 more answers
My computer runs 250 frames per 2 seconds. How many frames would run in 3.5 minutes?
balandron [24]

Answer:437.5

Step-by-step explanation:3.5 times 250=875 divided by2 =437.5

7 0
2 years ago
Error Analysis
aleksklad [387]

The coefficient(s) of the expression is/are 7, 1

Use a comma to separate answers as needed.)

The constant(s) of the expression is/are 8

(Use a comma to separate answers as needed.)

What error might Jake have made?

OD. Jake did not include the coefficient 1.

Click to select your answer's

6 0
3 years ago
Can someone help me
Murljashka [212]

Answer:

Answer I think 2 is it

...........

5 0
3 years ago
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