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2 years ago

Could you explain why the answer 125 was supposed to be negative while my answer 81 was correct?

Mathematics

1 answer:

hichkok12 [17]2 years ago

5 0

Answer:

Step-by-step explanation:

Realize what (-5)^3 means

(-5)(-5)(-5)

25(-5)

-125

meanwhile

(-9)^2 is

(-9)(-9)

Basically a negative times a negative is always positive, but when a negative number is cubed (or raised to any odd exponent for that matter) the product will be negative.

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Simplify the expression -8+3

MAXImum [283]

-8 + 3 is equal to -5.

4 0

2 years ago

Read 2 more answers

Kim had 13 pencils she gave some pencils to her friend and then she got two new pencils now she has 9 pencils how many pencils d

nika2105 [10]

She gave 4 because 9+4=13

7 0

2 years ago

A bag contains 6 red marbles, 2 blue marbles, and 1 green marble. What is the

SSSSS [86.1K]

We have 1 green and 8 non-green.

We get a probability of 8/9 of a non-green for the first marble and a probably of 7/8 for the second being non green, so

p = (8/9)*(7/8) = 7/9

Answer: 7/9

6 0

2 years ago

Which of the following expressions is this one equivalent to?

schepotkina [342]

Answer: C. x-2

Step-by-step explanation:

We have the following expression:

$\frac{x^{4} -2x^{3} +x-2}{x^{3}+1}$

Factoring in the numerator:

$\frac{x(x^{3}+1)-2(x^{3}+1)}{x^{3}+1}$

Factoring again in the numerator with common factor $x^{3}+1$ :

$\frac{(x^{3}+1)(x-2)}{x^{3}+1}$

Simplifying:

$x-2$

Hence, the correct option is C. x-2

3 0

2 years ago

If 25% of a number is 65 and 60% of the same number is 156, find 35% of that number.

Goshia [24]

Answer:

35% of that number is 91.

Step-by-step explanation:

we need to first find 25% of what number equals 65.

65×100÷25 = 260

Then, if you use the same method again, 60% of 260 would be 156.

We know "that" number is 260, and all we need to do is find 35% of it.

35% of 260 = 91

Hope this helped :)

8 0

3 years ago