2 years ago

Which description is paired with its correct expression?

Mathematics

1 answer:

a_sh-v [17]2 years ago

7 0

Answer:

Step-by-step explanation:

Hi there! You’re correct.

Twice the difference of nine and a number squared would look like

$2(9-n^2)$

I hope this helped! :)

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3 years ago

Lela and Pepe are playing a video game. The ratio of Lela’s game score to Pepe's score is 2 : 5. Then Lela completes a quest and

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Answer: Lela's original score was 16.

Step-by-step explanation:

Alright lets get started.

Suppose Lela score was L.

Suppose Pepe score was P.

The ratio of Lela’s game score to Pepe's score is $2:5$

So the equation will be

$\frac{L}{P} = \frac{2}{5}$

Cross multiplying

$5\times L=2\times P$

$P=\frac{5\times L}{2}$ .................equation 1

Then Lela completes a quest and scores 12 bonus points. The new ratio becomes $7:10$

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Cross multiplying

$10(L+12)=7P$

Plugging value of P from equation 1

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Hence the score of Leela originally was 16. Answer

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