D
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Answer:
(x-12)(x+7)
Step-by-step explanation:
x^2 - 5x - 84
You find the factors of 84:
1,84; 2,42; 3,28; 4,21; 6,14; 7,12
7 and 12 are 5 apart, so we use them:
(x - 12)(x + 7)
The 12 is negative because it's greater than 7, and the coefficient of x is negative 5.
Answer:
no
Step-by-step explanation:
y =x
Substitute the point into the equation
5 =0
This is not true so the point is not a solution
Answer:
angle 1 = 84
angle 2 = 6
Step-by-step explanation:
complementary angles add up to 90 degrees.
angle 1 + angle 2 = 90
(4x + 60) + x = 90
5x + 60 = 90
5x = 30
x = 6
angle 1 = 4x + 60 = 4(6) + 60 = 84
angle 2 = x = 6