The zeros of a quadratic function are –7 and 3. Which of the following could be the function? Select all that apply:
2 answers:
Answer:
First option: f(x)=x^2+4x-21
AND
Fourth option: f(x)=5x^2+20x-105
Step-by-step explanation:
All you have to do is do the quadratic equation backwards
If the zeros are x=-7 and x=3, the equation would look like ->
(x+7)(x-3)
Now distribute it
x(x-3)+7(x-3)
x^2-3x+7x-21
x^2+4x-21
The Fourth option is also correct. Just divide the whole equation by 5 and you will get the same exact equation as the first option.
Step-by-step explanation:
f(x) = (x+7)(x-3)
= x²+4x-21 ... (option A)
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C. 38,200 ft^3
Why you ask? Good question, how you solve volume is l•w•h=v (length•width•height=volume) so it was 60•45.5•14=38,200
Hope this helps!
Answer:
x = 9/4
Step-by-step explanation:
f(x) = 4x - 9
(first substitute f(x) with 0)
0 = 4× - 9
(Move four)
-4x = -9
=> x = -9/-4
= 9/4
Well it depends. what the problem
Answer:
Q1) Answer: After 3 minutes there will be 4.8 gallons of water in the fish tank. Q2) Answer: 40 gallons of water will be filled after 25 minutes.
1x24, 2x12, 3x8 are 3 ways that get 24
