chrisroth2924

05.01.2021 • 

Mathematics

A simple random sample of 750 US adults is selected, and each person is asked: "Considering only about 12 percent of plastic is currently recycled, and plastic is not biodegradable, do you support banning the use of single-use
plastics?" Eighty-three percent of those responding answered "Yes." Which of the following statements is true about
this survey?
It is reasonably accurate because it used a large sample.
It is reasonably accurate because simple random sampling was used.
It needs to be larger because only about 15 people were drawn from each state.
It probably overstates the percentage of people who favor banning the use of single-use plastics.
It probably understates the percentage of people who favor banning the use of single-use plastics.

Ответ:

mustachegirl311

09.09.2020

Mathematics

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Given:

In a right angle triangle, the measures of two legs are 5 ft and 5.6 ft. The measure of the hypotenuse is x.

To find:

The value of x.

Solution:

Pythagoras theorem: In a right angle triangle,

Using Pythagoras theorem, we get

Taking square root on both sides, we get

The measure of missing side is 7.5 ft. Therefore, the correct option is D.

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