Answer:
x = 6
Step-by-step explanation:
Take f(x) = -(x+9)(x-21) and multiply it out. We get:
f(x) = -[x^2 + 9x - 21x - 189], or
f(x) = -x^2 + 12x + 189
This is a quadratic equation. The coefficients are a = -1, b = 12 and c = 189.
The equation of the axis of symmetry is x = -b/(2a), which here equals:
x = -12 / [2*(-1)], or x = 6.
The correct answer is (6,3)
hope i helped you out in some type of way :)
Answer:
4
Step-by-step explanation:
2²
4
So
√4
2
The answer is 6 shirts
12.5x+8=83
12.5x=83-8
12.5x=75
x=75/12.5
x=6
ANSWER:
As the given angles are exterior corresponding angles, so they must be supplementary.
3x + 10 + 3x + 2 = 180
6x + 12 = 180
6x = 180 - 12
6x = 168
x = 28°
