2 years ago

Help me solve the following 5(2x+7)=

Mathematics

1 answer:

nekit [7.7K]2 years ago

4 0

Answer:

= 10x+35

Step-by-step explanation:

(5)(2x+7)

(5)(2x)+(5)(7)

=10x+35

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<u>Step-by-step explanation:</u>

Given: cos x = $\dfrac{8}{17}$ , x is in Quadrant 4

Use Pythagorean Theorem to find sin x:

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y² = 17² - 8²

y² = 289 - 64

y² = 225

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Use the double angle formula to find cos (2x):

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