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dezoksy [38]
3 years ago
11

Plz hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!The graph shows the relationship between hours worked and total earnings for a store clerk

.
Based on this information, which is the independent variable and the dependent variable?

A)Both hours worked and earnings are dependent variables.

B)Both hours worked and earnings are independent variables.

C)The dependent variable is hours worked, and the independent variable is
earnings

D)The independent variable is hours worked, and the dependent variable is
earnings.

Mathematics
1 answer:
Alla [95]3 years ago
6 0

Answer:D

Step-by-step explanation:took test

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At the sewing store, Natalie bought a bag of mixed buttons. The bag included 15 buttons, of which 40% were large. How many large
Lana71 [14]

Answer:

6

Step-by-step explanation:

The bag included 15 buttons, of which 40% were large means 40% of 15

40% = 40/100 = 2/5 = 0.4

Of = multiply

40% of 15 = 0.4 * 15

0.4 * 15 = 6

The answer is 6 large buttons

Hope this helps :)

Have an awesome day!

6 0
2 years ago
The question is 3(2x +4) = 6x + 10
Eduardwww [97]

Answer:

no solution

Step-by-step explanation:

when you distribute, the 6x on each side cancel out leaving there to be no solution to the problem. I attached a photo of my work as well.

8 0
3 years ago
Read 2 more answers
Information from a sample of 157 restaurant bills collected at the First Crush bistro is available in RestaurantTips. Two interv
wolverine [178]

Answer:

a) The 99% confidence interval is interval B: 3.35 to 4.35

The 90% confidence interval is interval A: 3.55 to 4.15.

b) Check Explanation.

Step-by-step explanation:

Confidence Interval for the population mean is basically an interval of range of values where the true population mean can be found with a certain level of confidence.

Mathematically,

Confidence Interval = (Sample mean) ± (Margin of error)

Margin of Error is the width of the confidence interval about the mean.

It is given mathematically as,

Margin of Error = (Critical value) × (standard Error of the mean)

Critical value is obtained from either the t-distribution or the z-distribution tables. It depends on sample size and for smaller sample sizes, whether there is information provided for the population mean and standard deviation.

But whether z-distribution or t-distribution, the critical value increases as the confidence level increases.

Hence, the critical value for the 99% confidence level will be higher than the critical value for the 90% confidence level.

And since all the other parameters that determine the confidence interval and it's width (sample mean and the standard error of the mean) are the same for the 90% and the 99% confidence interval, the larger critical value for the 99% confidence interval means that it has the bigger width.

Hence, of the two intervals given,

Interval A: 3.55 to 4.15

Interval B: 3.35 to 4.35

The larger interval, (3.35, 4.35) is the 99% confidence interval and the smaller interval, (3.55, 4.15) is the 90% confidence interval.

b) The data required for this second part isn't available, but the answer for the confidence interval can be obtained using the steps I have given above and below.

Like I have given above,

Confidence Interval = (Sample mean) ± (Margin of error)

Margin of Error = (Critical value) × (standard Error of the mean)

The sample mean and the standard error of the mean are obtained from the sample data (which is missing).

Sample mean = (Σx)/N

x = each variable

N = number of variables = 20

Standard error of the mean = σₓ = (σ/√n)

σ = standard deviation (obtained from the sample data)

90% critical value for sample size of 20 = 1.73

99% critical value for sample size of 20 = 2.86

Hope this Helps!!!

4 0
3 years ago
Lines m and n are perpendicular. Which of the following statements are true regarding lines m and n? Select two that apply.
Nitella [24]

Answer:

1&2 are true

Step-by-step explanation:

if the two lines are equidistant from each other then they must be parallel

since the lines are perpendicular

they form only right angles

4 0
3 years ago
If I ship travels at 120 miles in five hours how far can it travel in two hours
zalisa [80]

So 120 miles in 5 hrs so 120 divided by 5 is 24 times 2 is 48 is the ship travels 48 in 2 hrs and happy valentines

3 0
3 years ago
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