F(x)=-5(x-4)^2+80
f(x)=-5(x²-8x+16)+80
f(x)=-5x²+40x-80+80
f(x)=-5x²+40x
Replace f(x) to y, now switch the location of the variables x and y. Solve for new y.
y=-5x²+40x
x=-5y²+40y
0=-5y²+40y-x
Use quadratic formula to find the value of y.
y=-40+-√(40^2 -4(-5)(-x)/2(-5)
f^-1(x)= (-40+-√1600-20x)/-10 <--- Not too sure about this one :/
Hope I helped :)
B was the answer when I graphed using Desmos
Answer:
4,212
Step-by-step explanation:
<u>Step 1: Add</u>
23 + 4189
<em>4,212</em>
<em />
Answer: 4,212
Hi there!
First, let's find the area of the purple parallelogram. This can be done by using the formula A = bh.
WORK:
Formula: A = base x height
Plug in the values: A = 9.9 x 5.5
Solve: A = 54.45 in^2
Next, we'll find the area of the parallelogram again, using the same formula, except we'll use the other base (11) and it's height (h).
WORK:
Formula: A = base x height
Plug in the values: A = 11h
Now, we need to set the values that we have found equal to each other. This is because both are the area of the parallelogram, we just need to find the height for the second base.
WORK:
54.45 = 11h
h = 4.95 inches
ANSWER:
The value of h is equal to 4.95 inches.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
