the answer is 34.83 I believe
Ax^2+bx=c
REMEMBER THIS
ok
first, make sure that a is 1
done
now take 1/2 of b and square it
-18/2=-9, (-9)^2=81
add that to both sides
x²-18x+81=19+81
x²-18x+81=99
factor perfect square
(x-9)²=100
square root both sides
don't forget positive and negative root
x-9=10
x-9=-10
ad 9 to both sides
x=19
x=-1
answer is -1; 19
2nd choice is answer
Answer:
1 she spent 133
2 12 yd
3 his sister is 79 meters below him
4 the temp raised by 33 degrees
5 she has 92$ in her bank account
Step-by-step explanation:
Answer:CASE #1 - Divergent and convergent one-way
residential streets to reduce direct through
routes impacting the neighborhood.
CASE #2 - Alternating one-way streets throughout a
portion of a grid system to gain safety
advantages of one-way operations.
CASE #3 - Creating a one-way couplet by paring a
residential street with a nearby thru street to
create a corridor for thru traffic
Step-by-step explanation:
Step-by-step explanation:
the derivative of an inverse function is
1/f'(f^-1(x))
f'(x) = -6x²
f^-1(7) is solving the original function equation for x under the knowledge that y = 7
7 = 5 - 2x³
2 = -2x³
-1 = x³
=>
x = -1
f'(-1) = -6×(-1)² = -6×1 = -6
so,
(f^-1)'(7) = -1/6
