40 points and I will choose brainlyist below is the question.

Mathematics

1 answer:

ipn [44]2 years ago

7 0

Using proportions, the expected number of adults in Palm City whose main source of news is the internet or newspaper is of 19,413.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

From the table, the proportion of adults in Palm City whose main source of news is the internet or newspaper is found as follows:

p = (62 + 88)/(62 + 88 + 128 +24 + 38) = 0.4412.

Hence, out of 44,000 adults, the expected number is found as follows:

0.4412 x 44000 = 19,413.

More can be learned about proportions at brainly.com/question/24372153

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Step-by-step explanation:

Given:

Juan received scores of 82, 76, 93, and 80 on his first four chemistry tests.

His goal is to have an 86 average in chemistry for his first five tests.

Question asked:

What score must he earn on the next test to achieve an average of exactly 86?