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3 years ago

3n + 9(2n – 5) = -3 n =

Mathematics

2 answers:

Vsevolod [243]3 years ago

7 0

Answer:

n = 2 im guessing

Step-by-step explanation:

3n + 9 (2n - 5) = -3n

3n + 18n - 45 = -3

21n - 45= - 3

21n = -3 + 45

21n = 42

n = 2

hope that helps and there are multiple ways to do it the way i did it was solve for n and i got 2:))

Jobisdone [24]3 years ago

3 0

Answer:

n=15/8

Step-by-step explanation:

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Step-by-step explanation:

step 1

Find the measure of angle C

we know that

The triangle ABC is a right triangle

Angle C is a right angle

therefore

$C=90\°$

step 2

Fin the measure of angle A

we know that

In the right triangle ABC

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we have

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substitute

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step 3

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In the right triangle ABC

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substitute the given values

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step 4

Find the length side a

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In the right triangle ABC

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$a=(c)sin(A)$

substitute the given values

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