2 years ago

3x + y = -21 x+y=-5 solving systems of equations by substitution

1 answer:

7 0

First : x=-5-y and then put x in the phrase above

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nikitadnepr [17]

Answer:

Step-by-step explanation:

Note the expansion

tan(a - b) = $\frac{tana-tanb}{1+tanatanb}$

We are given the right side of the expansion , then left side is

tan( $\frac{\pi }{7}$ - $\frac{\pi }{8}$ )

= tan( $\frac{8\pi -7\pi }{56}$ )

= tan ( $\frac{\pi }{56}$ ) → A

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2 years ago

Strike441 [17]

Answer:

Step-by-step explanation:

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3 years ago

omeli [17]

Answer:

Step-by-step explanation:

3 mah fwend omg so hard my brain hurts

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Margarita [4]

The answer is D

U would subtract a^2 then square both sides to isolate the variable

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2 years ago

astraxan [27]

Y+3=0 is vertical line -3 on the graph.

Hope this helps there was no choices.

8 0

3 years ago