Answer:
Step-by-step explanation:
hello :
f(x) = 10x²+20x-11 Completing The Square
f(x) = 10(x²+2x)-11 = 10((x²+2x+1)-1)-11
f(x) =10((x+1)²-1)-11
f(x)= 10(x+1)²-21...vertex form when the vertex is : (-1 ; -21)
The coefficient is 2, because its the only one that has the variable y with it.
hope that helps :)
Answer:
h = 2A / (b1 + b2)
Step-by-step explanation:
A = 1/2h (b1 + b2)
Divide both sides by 1/2 (b1 + b2)
h = A / 1/2 (b1 + b2)
h = 2A / (b1 + b2)
The first one is the square root of 9 and 16
