2 years ago

Writing the missing numbers

Mathematics

1 answer:

Xelga [282]2 years ago

8 0

You cant see it clearly

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If you add 21 to my number and then multiply the result by 3, you will get 84 more than two-thirds of my number. Find my number.

Ksivusya [100]

Based on the calculations, the unknown number is equal to $\frac{-45}{7}$

Let the unknown number be x.

<h3>How to find an unknown number:</h3>

Translate the word problem into an algebraic expression, we have;

Adding 21 to the unknown number:

$21 +x$

Multiplying the result by 3:

$3\times (21+x)$

84 more than two-thirds of the unknown number:

$\frac{2x}{3} +84$

Equating the equations, we have:

$3\times (21+x) = \frac{2x}{3} +84\\\\43+3x=\frac{2x}{3} +84$

Cross-multiplying, we have:

$43+3x=\frac{2x}{3} +84\\\\129+9x=2x+84\\\\9x-2x=84-129\\\\7x=-45\\\\x=\frac{-45}{7}$

Read more on word problems here: brainly.com/question/13170908

5 0

2 years ago

I don’t know if this is correct , please help !!!!!! Will mark brainliest !!!!!!!!!!!!

Arisa [49]

Answer:

change the negative to not domain and the zero to in domain

Step-by-step explanation

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2 years ago

I want to give them away!!!!

zhuklara [117]

Answer:

but why? Im just curious lol. but thanks! ^^

Step-by-step explanation:

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2 years ago

Choose the option that correctly completes the statement.

Advocard [28]

At least one acute angle

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2 years ago

Read 2 more answers

What's the least common multiple of 6, 12 and 30

Licemer1 [7]

Answer:

the answer is 2

Step-by-step explanation:

2×4=6

2×6=12

2×15=30

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2 years ago