3 years ago

Solve for 2. Your answer must be simplified. x + 5<-4

Mathematics

1 answer:

Artyom0805 [142]3 years ago

3 0

Hopes this helps:

Answer: x < -9

Subtract 5 from both sides

X < -4 - 5

Simplify -4 - 5 to -9.

X < -9

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If cos x=8/17, and 270° < x < 360° what is cos(2x)?

svp [43]

Answer: $\bold{-\dfrac{161}{289}}$

Step-by-step explanation:

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

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y² = 17² - 8²

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

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4 years ago

Solve for x: 2(3x - 9) = 18x x = -3/2 x = 3/2 x = 0 x = 6

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Remember yo can do anything to an equation as long as you do it to both sides

so
remember distributive property
a(b+c)=ab+ac

so first distribute
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minus 6x both sides
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easier way is to first divide both sides by 2

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