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3 years ago

7k-2(3k+1)-9 simplifyed

Mathematics

1 answer:

tamaranim1 [39]3 years ago

6 0

Answer:

k= -11

Step-by-step explanation:

Let's simplify step-by-step.

7k−2(3k+1)−9

Distribute:

=7k+(−2)(3k)+(−2)(1)+−9

=7k+−6k+−2+−9

Combine Like Terms:

=7k+−6k+−2+−9

=(7k+−6k)+(−2+−9)

=k + −11

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2 years ago

Read 2 more answers

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Nikolay [14]

Answer:

-88

Step-by-step explanation:

Let N(x) be the number of students at NMS for a certain number of years.

Let S(x) be the number of students at SMS for a certain number of years.

Let x be the number of years.

N(x)=1240-25x

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When # of students is equal, N(x)=S(x). Therefore, we are looking for the value of x (# of years) when 1240-25x=800-30x

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2 years ago