Find the product.

Mathematics

2 answers:

RUDIKE [14]2 years ago

8 0

Answer:

C. 3x2 − 3x − 60

Step-by-step explanation:

3(x + 4) (x - 5) = (3x+12) (x-5)

(3x+12) (x-5) = 3x2+12x-15x-60

3x2+12x-15x-60 = 3x2 − 3x − 60

LuckyWell [14K]2 years ago

6 0

C. 3x^2-3x-60 Hope it helps

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If df=78, de=5x-9, and ef=2x+10, find ef

9966 [12]

As e is point between df. So we can write df as
df = de + ef

As given df = 78 , de = 5x - 9 , ef = 2x + 10.

So we can write

78 = 5x - 9 + 2x + 10

78 = 7x + 1

On subtracting 1 on booth side

78 - 1 = 7x +1 - 1

77 = 7x

On dividing both side by 7.

$\frac{77}{7} = \frac{7x}{7}$

11 = x

So x = 11.

So ef = 2x + 10 = 2*11 + 10 = 22 + 10 = 32

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3 years ago

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Marizza181 [45]

Answer:

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Range is all numbers over 0 - (0,

∞

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Explanation:

One thing that you have to remember is that when you are finding the domain of a polynomial, it is all real number. it runs from

(

−

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For finding the range, in a quadratic formula, you have to find when the finction has it's vertex. That is the place that the max or min happens and then you can find the range from there.

in this situaltion we found that the vertex is at the the origin at (0,0)

therefore the range is (0,

∞

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2 years ago

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masha68 [24]

The answer would be C.2

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3 years ago

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