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Debora [2.8K]
2 years ago
11

Please help with numbers 5 and 7!

Mathematics
1 answer:
natta225 [31]2 years ago
5 0
The answer for number 5 is= 6+2 bc 6×2=12 and 6+2=8
and I'm sorry I have no idea for number 7
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Use the graph below to fill in the blank with the correct number
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consider the function f(x) = x2 2x – 15. what are the x-intercepts of the function? left-most x-intercept: ( , 0) right-most x-i
eimsori [14]

we have

f(x)=x^{2} +2x-15

we know that

The x-intercept is the value of x when the value of the function is equal to zero

so

in this problem

Find the roots of the function

equate the function to zero

x^{2} +2x-15=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

x^{2} +2x=15

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Rewrite as perfect squares

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x=-1(+/-)4

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therefore

<u>the answer is</u>

the x-intercepts are the points (3,0) and (-5,0)

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3 years ago
Read 2 more answers
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