3 years ago

Can someone help me out! it would be really appreciate :)

Mathematics

1 answer:

nirvana33 [79]3 years ago

5 0

Answer:

6x4+10x3−4x2−15x+5

Step-by-step explanation:

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Perform each indicated operation

MissTica

Answer: $\frac{x+6}{x-4}$

Step-by-step explanation:

First you need know some general formuals of factorization such as

$x^3+y^3=(x+y)(x^2-xy+y^2)$ so you have $x^3+64=X^3+4^3=(x+4)(x^2-4x+4^2)$

And, $x^2-y^2=(x-y)(x+y)$ so you have $2x^2-32=2(x^2-16)=2(x^2-4^2)=2(x+4)(x-4)$

If you use them, then you can modify your equations such as

$\frac{x^3+64}{2x^2-32}$ ÷ $\frac{x^2-4x+16}{2x+12}$ = $\frac{(x+4)(x^2-4x+4^2)}{2(x+4)(x-4)}$ ÷ $\frac{x^2-4x+16}{2(x+6)}$ = $\frac{(x+4)(x^2-4x+4^2)}{2(x+4)(x-4)} . \frac{2(x+6)}{{x^2-4x+16}} = \frac{1}{x-4}.\frac{x+6}{1}=\frac{x+6}{x-4}$

4 0

3 years ago

you plant 30 african violet seeds and 9 of them sprout use experimental probability to predict how many will sprout if you plant

Ostrovityanka [42]

Given that out of 30 planted seeds only 9 of the m sprouted, then:
Experimental probability =(number of occurrence of event)/(total number of trials made)
=9/30
=3/10
thus the number of seeds that will sprout given that 20 seeds we planted will be:
3/10×20
=6 seeds

8 0

3 years ago

What is 0.43 as a fraction in simplest form?

WITCHER [35]

7/28 is the answer to your question.

6 0

3 years ago

The probability that a worker with occupational exposure to dust contracts a lung disease is 0.2. three such workers are checked

Elena-2011 [213]

Answer:

i think b. at least one of them contracted a lung disease

5 0

2 years ago

Distribute: -3(4a-5b+c)

kvv77 [185]

Answer:

I got it.

Step-by-step explanation:

-12a - (-15b) + (-3c)

4 0

3 years ago