Gina wants to take dance classes. She compares two dance studios to determine which has the best deal for her. Dance World charg
1 answer:
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Answer:
Correct choice is 2.
Step-by-step explanation:
We have been given a graph of the quadratic function. Now we need to use that graph to find the equation of the graph in vertex form. By the way given choices written in intercept form so to be accurate we are going to find the equation in intercept form.
from graph we see that x-intercepts are at 5 and -2.
we know that if x=a is x-intercept then (x-a) must be factor.
So (x+2)(x-5) is the factor.
when leading coefficient is positive then graph opens upward.
so that means leading coefficient is 0.4
Hence correct choice is 2.
by Quadratic formula , , values of x are
. None of mentioned options are correct according to question!
<u>Step-by-step explanation:</u>
Here we have , expression x2 + 20 = 2x or , .
We know that Quadratic formula is :
⇒
Putting this value in equation :
⇒
⇒
⇒
⇒
⇒
Therefore , by Quadratic formula , , values of x are
. None of mentioned options are correct according to question!