3 years ago

Please Help ASAP!!

1 answer:

4 0

Domain is the numbers you can use for x
so we see one range is -4≤x<3 and the other is 3≤x<6
so that means the domain is all the numbers from -4 to 6, including -4 but not including 6
so then
including is [] and not including is ()
-4≤x<6 is [-4,6)
3rd option

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zimovet [89]

Answer:

(1.5,1)

Step-by-step explanation:

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3 years ago

A quadratic equation ax^2+bx+c=0 has -11 and 4 as solutions. Find the values of b and c if the value of a is 1 (hint, use zero f

Alina [70]

Answer:

b = 7, c = -44

Step-by-step explanation:

If the quadratic equation has the solutions -11 and 4, the two factors are:

$(x+11)(x-4)=0$

Since when we use the zero factor property we get

x+11=0 ⇒ x= -11

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Thus, we have used the zero factor property in reverse to find the factorization of the quadratic equation.

Now we develop the multiplications between parenthesis:

$(x+11)(x-4)=0\\x^2-4x+11x-44=0\\x^2+7x-44=0$

So b is the number that accompanies the x: b = 7

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