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GaryK [48]
3 years ago
8

Solve the system of equations -4x+11=15 and x=2y

Mathematics
1 answer:
bixtya [17]3 years ago
8 0

Answer:

x = -, y = - 1/2

Step-by-step explanation:

- 4x + 11 = 15 \\  - 4x = 18 - 11 \\  - 4x = 4 \\ x =  \frac{4}{ - 4}  \\ \red{ \bold{ x =  - 1}} \\ x = 2y \\ 2y =  - 1 \\ \purple{ \bold{ y=  -  \frac{1}{2} }}

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Firdavs [7]

The expression cos⁴ θ in terms of the first power of cosine is <u>[ 3 + 2cos 2θ + cos 4θ]/8.</u>

The power-reducing formula, for cosine, is,

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We can do it as follows:

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Learn more about reducing trigonometric powers at

brainly.com/question/15202536

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