Answer:
A. -8 and 20
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
<em>Consider the graph of the quadratic function y = </em><em />
<em>What are the roots of the function?
</em>
<em>A. –8 and 20
</em>
<em>B. –40 and –8
</em>
<em>C. –8 and 8
</em>
<em>D. –40 and 20
</em>
My answer:
Given the function:
<em> y = </em><em />
<=> y = <em> </em>
Let convert to the factors form, the roots of the function must meet the following requirements:
- The two number that has the sum of 12 = -b
- The two number that has the product of -40 = c
In 4 possible answer, only <em>–8 and 20 is possible because: </em>
-8 + 20 = 12 = -b
-8*20 = -160 = c
So the factored form of the function is:
y = (x + 8)(x-20)
Hope it will find you well.
Answer:
50.24
Step-by-step explanation:
a = (3.14*8^2)/4
a = 200.96/4
a = 50.24
Answer:
Step-by-step explanation:
8b - 7 = 7b - 2
Bringing like terms on one side
8b - 7b = - 2 + 7
B = 5
-12 + 5k = 15 - 4k
Bringing like terms on one side
5k + 4k = 15 + 12
9k = 27
k = 27/9 = 3
6 thats what i think it is