Answer:
Kayla and Maddy will be in the same level in 4 days.
Step-by-step explanation:
Kayla: y = 6x + 12
Maddy: y = 2x + 28
6x + 12 = 2x + 28
Subtract 2x from both sides;
4x + 12 = 28
Subtract 12 from both sides;
4x = 16
Divide both sides by 4;
x = 4
Answer:
A) -15, 5, 2
Step-by-step explanation:
Answer:8
Step-by-step explanation:
48/4 = 12
12-4 = 8
X = 1, since they intersect at (1,6) and are thus equal at that point
Two numbers that add up to -19 and multiply to 48 are -16 and -3:
![(x^4-19x^2+48)=0\\(x^2-16)(x^2-3)=0\\(x+4)(x-4)(x^2-3)=0](https://tex.z-dn.net/?f=%28x%5E4-19x%5E2%2B48%29%3D0%5C%5C%28x%5E2-16%29%28x%5E2-3%29%3D0%5C%5C%28x%2B4%29%28x-4%29%28x%5E2-3%29%3D0)
So, the solutions come from each parentheses: x+4=0, x-4=0, and x^2-3=0.
x+4=0
x = -4
x-4=0
x = 4
x^2-3=0
x^2 = 3
x = +/- √3
So, the solutions are -4, -√3, √3, and 4.