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4 years ago

Multiply. x^2 + 8x + 15/x-4 x x^2-16/2x+6

2 answers:

8 0

To find the answer for this question:

x^2 + 8x 15/x - 4xx^2 - 16/2x + 6

Apply the exponent rule:
x^2 + 8x + 15/x - 4x^3 - 16/2x + 6

Divide the numbers: 16/2 = 8:
x^2 + 8x + 15/x - 4x^3 - 8/x + 6

Apply the rule: a/c +/- b/c = a +/- b/c
x^2 + 8x + 15-8/x - 4x^3 + 6

After you subtract the numbers: 15 - 8 from the fraction that equals to 7:
x^2 + 8x + 7/x - 4x^3 + 6

So, your answer would be: x^2 + 8x + 7/x - 4x^3 + 6.

Sophie [7]4 years ago

5 0

= 1/2 ( x + 5 ) ( x + 4 )

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A table is on sale for 464 , which is 36% less than the regular price.

viva [34]

The original price was 725.
Explanation:
"36% less than" means taking 36% away from 100%. 100-36 is 64, so 64% remains when 36% is taken away. So, 64% of the original table's price is 464.
So, if the original price was x, 464=0.64x
Solve this by dividing both sides by 0,64:
725=x
So, the original price was 725.

3 0

4 years ago

The variance of the scores on a skill evaluation test is 143,641 with a mean of 1517 points. If 343 tests are sampled, what is t

Vlad1618 [11]

Answer:

The probability that the mean of the sample would differ from the population mean by less than 36 points=0.9216

Step-by-step explanation:

We are given that

The variance of the scores on a skill evaluation test=143,641

Mean=1517 points

n=343

We have to find the probability that the mean of the sample would differ from the population mean by less than 36 points.

Standard deviation, $\sigma=\sqrt{143641}$

$P(|x-\mu|$

$=P(|Z|$

$=0.9216$

Hence, the probability that the mean of the sample would differ from the population mean by less than 36 points=0.9216

5 0

3 years ago

Which pair is a solution of y=x-4?

kompoz [17]

The first one is the answer

4 0

3 years ago

Read 2 more answers

Translate the sentence into an inequality.<br> A number x divided by 2 is at most – 28.

wolverine [178]

X/2 < -28

Hope this helps :)

3 0

4 years ago

the side length of toms square garden was 36 ft. he used 1/2 of the garden for growing roses. what area of his garden was used f

charle [14.2K]

Answer:

648 ft ²

Step-by-step explanation:

The area of Tom's garden would be 36*36 which gives us 1296 ft squared. He used half of his garden for growing roses which means he used 1296/2 =648 ft squared for his roses.

8 0

3 years ago