Answer:
x=9, y=10. (9, 10). The two numbers are 9 and 10.
Step-by-step explanation:
3x+5y=77
x+y=19
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3x+5y=77
-3(x+y)=-3(19)
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3x+5y=77
-3x-3y=-57
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2y=20
y=20/2
y=10
x+10=19
x=19-10
x=9
Answer:
Blue, if you look, they both are close, but due to the pathagrium theory blue is longer.
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
So we have the function:
![f(x)=3x^2+2x-5](https://tex.z-dn.net/?f=f%28x%29%3D3x%5E2%2B2x-5)
To evaluate the value of f(-2), substitute -2 for x. Thus:
![f(-2)=3(-2)^2+2(-2)-5](https://tex.z-dn.net/?f=f%28-2%29%3D3%28-2%29%5E2%2B2%28-2%29-5)
Square first:
![f(-2)=3(4)+2(-2)-5](https://tex.z-dn.net/?f=f%28-2%29%3D3%284%29%2B2%28-2%29-5)
Multiply:
![f(-2)=12-4-5](https://tex.z-dn.net/?f=f%28-2%29%3D12-4-5)
Now, subtract:
![f(-2)=8-5=3](https://tex.z-dn.net/?f=f%28-2%29%3D8-5%3D3)
So:
![f(-2)=3](https://tex.z-dn.net/?f=f%28-2%29%3D3)
And we're done!
the answer to your question is B.) 12x