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Tamiku [17]
3 years ago
8

I WILL MARK YOU BRAINLEST The graph below shows the number of calories burned while riding a bicycle.

Mathematics
2 answers:
yanalaym [24]3 years ago
5 0

Answer:

c 4 cal per minute

Step-by-step explanation:

because they burn 40 cal per 10 min and 40÷10 is 4 so 4 cal per 1 min

andriy [413]3 years ago
5 0
The answer is c 4 calories per min.
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Help, please. I dont really understand
Ivenika [448]

Answer:

We can eliminate the second and third options because marking something up doesn't result in a number less than the original. Since we are told to select 3 options and there are 3 answer choices left we select the first, fourth, and fifth statements.

5 0
3 years ago
The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the e
kow [346]

Answer:

The 80% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.149, 0.207).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

Suppose a sample of 292 tenth graders is drawn. Of the students sampled, 240 read above the eighth grade level.

So 292 - 240 = 52 read below or at eight grade level, and that n = 292, \pi = \frac{52}{292} = 0.178

80% confidence level

So \alpha = 0.2, z is the value of Z that has a pvalue of 1 - \frac{0.2}{2} = 0.9, so Z = 1.28.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 - 1.28\sqrt{\frac{0.178*0.822}{292}} = 0.149

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 + 1.28\sqrt{\frac{0.178*0.822}{292}} = 0.207

The 80% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level is (0.149, 0.207).

3 0
3 years ago
Cost-sint2 = 0 solve for t
patriot [66]

Answer:

(sin(t)+cos(t))^2=sin^2(t)+cos^2(t)+2sin(t)cos(t)=1+sin(2t)\\


Step-by-step explanation:

hopefully this helps!

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3 years ago
Find the missing number<br> 104=2x2x ?x13
jeka94
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3 years ago
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Which solid does this net form?
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hexagonal pyramid

Step-by-step explanation:

i don't know exactly

7 0
2 years ago
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