2 years ago

Which of the following expressions can be combined?

Mathematics

1 answer:

Rom4ik [11]2 years ago

3 0

Answer: Choice C

Work Shown:

$2\sqrt{12} - 6\sqrt{27}\\\\2\sqrt{4*3} - 6\sqrt{9*3}\\\\2\sqrt{4}*\sqrt{3} - 6\sqrt{9}*\sqrt{3}\\\\2*2*\sqrt{3} - 6*3*\sqrt{3}\\\\4\sqrt{3} - 18\sqrt{3}\\\\(4-18)\sqrt{3}\\\\-14\sqrt{3}\\\\$

In short,

$2\sqrt{12} - 6\sqrt{27}=-14\sqrt{3}$

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(1)

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(2)

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Mayerlin has a mask collection of 400 masks. She keeps some in a display case and the rest on the wall. She keeps 24% of her mas

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<h3>What are percentages?</h3>

Percentage is the fraction of an amount that is usually expressed as a number out of hundred. Percentages are a measure of frequency.

<h3>How many masks are on the wall?</h3>

Percentage of the masks on the wall = 100 - 24 = 76%

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To learn more about percentages, please check: brainly.com/question/25764815

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2 years ago

70% of what number is 98

nika2105 [10]

Hello,

Shall we begin?

70% = 98

70%.....................98
100%...................x

70 * x = 98 * 100
70x = 9800
x = 9800/70
x = 140

<span>Answers: 140 is 100%</span>

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4 years ago