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Harman [31]
3 years ago
10

Please help me !!! It’s due at 11:59pm

Mathematics
2 answers:
nikklg [1K]3 years ago
8 0
The second answer is correct.
irga5000 [103]3 years ago
3 0

Answer:

it has to be 77.7

Step-by-step explanation:

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Sam is baking 10 pies for a school bake sale. He uses 21 cups of apples for 6 pies. How many cups of apples will he need to make
sertanlavr [38]

Answer:

35

Step-by-step explanation:

6 pies = 21 cups of apples

1 pie =  3.5 cups of apples

10 pies = 35 cups of apples

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2 years ago
Which point is on the circle centered at the origin with a radius of 5 units?
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Answer:

A

Step-by-step explanation:

sqrt[(2 - 0)² + (sqrt(21) - 0)²]

sqrt(4 + 21)

sqrt(25)

5

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3 years ago
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a railroad car container can hold 42,000 pounds. Mr.Evans wants to ship 90 ovens and some freezers in the same container. If eac
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The amount of freezers that can be shipped is 70. I'm not completely sure, because I do not know how many pounds the ovens are. But to get the answer, just simply divide 42000 by 600.
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3 years ago
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If 48 eggs are used in the cafeteria today but the number expected to be used tomorrow is 30% less than that, how many eggs are
Ray Of Light [21]

Answer:

34 eggs are expected to be used tomorrow

30% of 48 = 14

48-14=34

Step-by-step explanation:


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3 years ago
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Marine scientists categorize signature whistles of bottlenose dolphins by typelong dash—type ​a, type​ b, type​ c, etc. In one s
r-ruslan [8.4K]

Answer:

The 95​% confidence interval for the true proportion of bottlenose dolphin signature whistles that are type a whistles is (0.4687, 0.6123).

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}.

For this problem, we have that:

n = 185, \pi = \frac{100}{185} = 0.5405

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5405 - 1.96\sqrt{\frac{0.5405*0.4595}{185}} = 0.4687

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5405 + 1.96\sqrt{\frac{0.5405*0.4595}{185}} = 0.6123

The 95​% confidence interval for the true proportion of bottlenose dolphin signature whistles that are type a whistles is (0.4687, 0.6123).

3 0
3 years ago
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