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Ann [662]
2 years ago
14

Estimate the product by first rounding each number to the highest place value. 26.7 × 4.8​

Mathematics
2 answers:
AnnZ [28]2 years ago
5 0

Answer:

130

Step-by-step explanation:

you times 16.7*4.8 to get 128.16

you round to get 128.2

round again to get 128

round again to get 130

that is all you can round up

MAXImum [283]2 years ago
4 0

Answer:

150

Step-by-step explanation:

26.7 round to 30

4.8 rounds to 5

30x5 = 150

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What is the volume of the cone?
WARRIOR [948]

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70/3 πcm

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8 0
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Find the measure of angle y. Round your answer to the nearest hundredth. (please type the numerical answer only) A right triangl
andriy [413]
For this case we have the following trigonometric relationship:
 cos (y) = 8/13
 Clearing the value of and we have:
 y = Acos (8/13)
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4 0
3 years ago
Read 2 more answers
Read the following excerpts from the New York Times (December 17, 1996) article Chance of Heart Attack Increases for Those Who S
nataly862011 [7]

Answer:

1. B

2. A

3. A

4. A

Step-by-step explanation:

Hello!

The study claimed that subjects who suffer depression are more likely to have a heart attack than those who are not depressed.

1551 persons were interviewed as part of the experiment and classified according to their answers in two groups "suffered depression" and "didn't suffer depression"

Afterward, the researchers looked up the medical history of all 1551 subjects and recorded how many of them had heard issues.

1.

An observational study is one where the researcher only determines the variables he wants to study without controlling or influencing any factor of the population of interest. Because there is no interference from the researchers, there is a high risk that confounding factors may affect the conclusions of it. These studies are usually precursors to experimental tests, it allows the researcher to have an idea of the association between the two variables but you cannot establish causal relationships from them.

This is an example of an observational study, the researcher merely recorded the variables of interest without interfering with any aspects that may influence them. (For example diet or exercise habits of the subjects)

2. and 3.

The objective of the study is to determine if "depression" causes "disposition to heart attacks"

The explanatory variable is "depression status of the subject" since it is what is suspected to influence over the heart condition of said subject and "heart attack status" is the response variable.

4.

Of the 1551 subjects originally studied, 444 were classified as depressed, of these 27 had heard attacks. You can calculate the "proportion of subjects that suffered depression and had heart attacks" as:

p': 27/444= 0.06 ⇒ 6%

Since this value was obtained from the sample, it is an estimation of the population parameter, also called statistic.

I hope it helps!

4 0
3 years ago
What is the height of a rectangular prism that has a volume of 280 cubic meters,a length of 8 meters, and a width of 7 meters? S
lyudmila [28]
When looking at a rectangular prism, we know that Volume = length * width * height

If we are given that the volume of the prism is 280 cubic meters (m^3), the length is 8 meters, and the width is 7 meters, we can fill in our equation.

280 = 8 * 7 * height
280 = 56 * height

Because we are solving for the height, we divide both sides by 56

280/56 = height

height = 5 meters

8 0
3 years ago
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