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2 years ago

Solve -4(3x-7) =40 for x

Mathematics

1 answer:

PIT_PIT [208]2 years ago

4 0

Answer:

x = -1

Step-by-step explanation:

-4(3x-7) =40

Divide each side by -4

-4(3x-7)/-4 =40/-4

3x-7 = -10

Add 7 to each side

3x-7+7 = -10+7

3x = -3

Divide each side by 3

3x/3 = -3/3

x = -1

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Step 1: Convert $\frac{5\pi }{12}$ , which is in radians into degrees. To convert it multiply by $\frac{180}{\pi }$

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Step 3: Add the cos45 and cos30 to get cos5pi/12

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Hope this helped!

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