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V125BC [204]
3 years ago
12

Simplify the expression -4x2(3x − 7)

Mathematics
2 answers:
Anna007 [38]3 years ago
5 0
-4x2(3x-7)
multiply -4 and 2
-8(3x-7)
distribute the -8
-24x+56
Paul [167]3 years ago
5 0
Its  -12x^3+28x^2 hope it helps 
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Delvig [45]
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Answer:

t(c)  =  3.355

Step-by-step explanation:

We assume a normal distribution, and with sample size n = 9 we should follow a t -student test on both tails since the FDA is interested in determining if the amount of drug absorbed is different from 3.5 micrograms.

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8 0
3 years ago
Help meeeeeeeeeeeeeeeeeee <br><br> &gt;_
nignag [31]

Answer:

good news, the second one is relatively easy because it can be factored to (2x+1)(2x-3) which means that number two has solutions of -1/2 and 3/2

but for number one you have to either use the quadratic equation cause I've tried using synthetic division or just use the second equation to derive the first solutions so I tried move the graph up by two units and found that the intercepts are approximately (1+-√2)/2 or 1/2+-1/√2 for 4x^2-4x-1

7 0
3 years ago
What is the probability that a red or green marble will be selected from a bag containing 9 red marbles, 6 blue marbles, 7 green
lara31 [8.8K]

Answer: \bold{\dfrac{16}{33} = 48\%}

<u>Step-by-step explanation:</u>

  Red  or  Green

=\dfrac{red}{total}+\dfrac{green}{total}

=\dfrac{9}{33}+\dfrac{7}{33}

=\dfrac{16}{33}

≈ 48%






4 0
3 years ago
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