Answer:
C. domain: {x ≤ 2}; range: {–∞ < y < ∞}
that's the right answer pramis:)
Answer:
x = 1 and x = -7
Step-by-step explanation:
Given that,
...(1)
and
y = 7 -x ....(2)
Put the value of y from equation (2) in (1)
![7-x=x^2+5x\\\\x^2+5x-7+x=0\\\\x^2+6x-7=0\\\\x^2+7x-x-7=0\\\\x(x+7)-1(x+7)=0\\\\(x-1)(x+7)=0](https://tex.z-dn.net/?f=7-x%3Dx%5E2%2B5x%5C%5C%5C%5Cx%5E2%2B5x-7%2Bx%3D0%5C%5C%5C%5Cx%5E2%2B6x-7%3D0%5C%5C%5C%5Cx%5E2%2B7x-x-7%3D0%5C%5C%5C%5Cx%28x%2B7%29-1%28x%2B7%29%3D0%5C%5C%5C%5C%28x-1%29%28x%2B7%29%3D0)
So,
x = 1 and x = -7
Hence, the solution of the given equations is x = 1 and x = -7
Answer:
c = 7x
Step-by-step explanation:
espero que esto ayude