Answer:
vertex = (- 10, - 10 )
Step-by-step explanation:
The equation of a quadratic in vertex form is
y = a(x - h)² + k
where (h, k ) are the coordinates of the vertex and a is a multiplier
To obtain this form use the method of completing the square.
Given
h(x) = x² + 20x + 90
add/subtract ( half the coefficient of the x- term )²
h(x) = x² + 2(10)x + 100 - 100 + 90
= (x + 10)² - 10 ← in vertex form
with (h, k ) = (- 10, - 10 )
The answer is: True
———————————
9^2 - 4^2 = (9 + 4)(9 - 4)
So the polynomial identity used here is
Answer:
n=2
Step-by-step explanation:
1/2(6n-30)=3/4(4-8n)
3n-15=3-6n
9n=18
n=2
To start you need to find out how many shirts are made a day. if 6/1200=9/x so then x= 1800 shirts made a day. to make 12600 shirts you will divide 12600 by 1800 = 7days
