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Vladimir79 [104]
3 years ago
15

-4x - 2y = -12 4x + 8y = -24 Solve the system by elimination.

Mathematics
2 answers:
Rasek [7]3 years ago
5 0
-4x-2y=-12
4x+8y=-24
6y=-36
y=-6
4x=-24-(8*(-6))
4x=-24+48
4x=24
x=6
Answer: (6;-6)
sesenic [268]3 years ago
4 0

6,-6

Explanation: plug 6 in for x and -6 for y to get your answer.

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2(a³+b²+11)+1(3+a³+b+11)
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Answer:

2(a^3+b^2+11)+1(3+a^3+b+11)=3a^3+2b^2+b+36

Step-by-step explanation:

I assume that you need simplification of the given expression.

The given expression is:

2(a^3+b^2+11)+1(3+a^3+b+11)

Using distributive property and multiplying 2 inside the parenthesis and 1 inside the other parenthesis. This gives,

2(a^3+b^2+11)=2\times a^3+2\times b^2+2\times 11\\2(a^3+b^2+11)=2a^3+2b^2+22\\\\1(3+a^3+b+11)=1\times 3+1\times a^3+1\times b+1\times 11\\1(3+a^3+b+11)=3+a^3+b+11=a^3+b+14

Therefore, 2(a^3+b^2+11)+1(3+a^3+b+11) is equal to:

2a^3+2b^2+22+a^3+b+14

Now, combining like terms using the commutative property of addition, we get:

=(2a^3+a^3)+2b^2+b+(22+14)\\=3a^3+2b^2+b+36

Therefore, the simplified form is 3a^3+2b^2+b+36

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Step-by-step explanation:

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14cos(30) = x

Hope this helps :)

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