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3 years ago

A rectangle is 3 times as long as it is wide. if the area is 27 square feet, find its perimeter.

1 answer:

3 0

W - a width
3w - a length
27 ft² - an area

Therefore:

w · 3w = 27
3w² = 27 |:3
w² = 9 → w = √9 → w = 3

3w = 3 · 3 = 9

width = 3
length = 9

The perimeter:

P = 2 · width + 2 · length

P = 2 · 3 + 2 · 9 = 6 + 18 = 24 ft.

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Which of the numbers below are whole numbers? Check all that apply.

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Answer:

A,D,F

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2 years ago

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I think this is correct:

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Murtha has decided to start a pebble collection. She collects one pebble the first day and two pebbles on the second day. On eac

Musya8 [376]

Answer:

Step-by-step explanation:

Given that:

First day (a) = 1

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Tn = a + (n - 1)d

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T(12) = 1 + 11

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3 years ago

HELP ME PLEASE PLEASE IM BEGGING

suter [353]

Answer:

FALSE, (2, 9) is not a solution to the set of inequalities given.

Step-by-step explanation:

Simply replace x by 2 and y by 9 in the inequalities and see if the inequality is true or not:

irst inequality:

$y\geq 4x\\9\geq 4\,(2)\\9\geq 8$

so thi inequality is verified as true since 9 is larger or equal than 8

Now the second inequality:

$y$

This is FALSE since 9 is larger than 4 (not smaller)

Therefore the answer to the question is FALSE, (2, 9) is not a solution to the set of inequalities given.

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3 years ago