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r-ruslan [8.4K]
3 years ago
5

Simplify sin(2x+7y)+sin(2x-7y)

Mathematics
1 answer:
vampirchik [111]3 years ago
4 0
Sin(a+b)=sin a * cos b + sin b cos a
sin(a-b)=sin a * cos b - sin b cos a
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Solve this problem please <br> x/3+6-2x=-6
Nikolay [14]

Answer:

36/5

Step-by-step explanation:

x/3 + 6 -2x = -6

multiply the whole equation by 3 to get rid of the denominator of the first x term.

x+18-6x = -18

move x terms to one side and numerical terms to the other, subtract 18 from both sides in this case

x+18-6x-18=-18-18

x-6x = -36

simplify

-5x = -36

divide both sides by -5 to isolate x

x = -36/-5

=36/5

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25/50 as a percentage
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3 years ago
Pls help due ASAP <br> Show workings please!!!
Vlad [161]

Answer:

AB=8

Step-by-step explanation:

First, you get figure out x. Since both sides are equal, use the equation x+3=2x-2, then subtract x from both sides, 3=x-2, and then add 2 to both sides, x=5. Then use one of the equations to get the length of the side, I used x+3=8, which is your answer.

(hope this helps :P)

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the answer is 1 and 4

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What is 3 to the 4th power in standard form
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Step-by-step explanation:

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