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3 years ago

What is the cube root of ______?

Mathematics

1 answer:

DedPeter [7]3 years ago

5 0

Answer:

3a^4

Step-by-step explanation:

The cube root of an expression breaks the expression into a term which multiplies by itself twice to make the expression. For example, the ∛8 = 2 since 2*2*2 = 8. A cube root looks for factors which form a group of 3 to make the expression. Using this definition and example, find the cube root of 27a^12.

27 breaks into 3*3*3. So the cube root of 27 is 3.

a^12 breaks into (a^4)(a^4)(a^4). So the cube root is a^4.

Together the cube root of 27a^12 is 3a^4.

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select the irrational number? A)√9 B)√12 C)√16 D)√20 E)√25 (there should be more than one answer)

GenaCL600 [577]

The answers are:
__________________________
[B]: "√12 " ; AND:
__________________________
[D]: "√20" .
__________________________
Note: "Irrational numbers" have decimals that are: 1) non-terminating; AND: 2) non-repeating.
__________________________
Consider the answer choices given; and consider the given information that there "should be no more than one answer.
__________________________________
Consider the following answer choices:
__________________________________
Choice A) "√9" = 3 . Rule out this choice.
__________________________________
Choice C) "√16" = 4 . Rule out this choice.
__________________________________
Choice E) "√25" = 5. Rule out this choice.
_________________________________
We are left with 2 (two) remaining answer choices:
[B]: "√12" ; and: [D]: "√20" .
_________________________________
If there are more than one answer, then these two choices should be the correct answer. However, let us explore these two choices, using a calculator.
____________________________
[B]: "√12" = 3.4641016151377546

[D]: "√20" = 4.4721359549995794
_________________________________
These two answer choices should the correct answers.

6 0

4 years ago

Twenty people each had 36 carrots. How many carrots are there altogether?

elena-s [515]

You know that there are 25 people and each person had 36 carrots. To find how many carrots everyone has in total, you have to multiply 25 by 36.

25 times 36 is 900.

There are 900 carrots altogether.

7 0

3 years ago

Simplify. Express your answer as a single fraction in simplest form. x x 5

lbvjy [14]

Answer:

$\frac{x}{20}$

Step-by-step explanation:

Given

$\frac{x}{4}$ - $\frac{x}{5}$

The LCM of 4 and 5 is 20

= $\frac{5x-4x}{20}$

= $\frac{x}{20}$

5 0

3 years ago

Monica paid sales tax of $1.80 when she bought a new bike helmet. If the sales tax rate was 9%, how much did the store charge fo

Anna11 [10]

Answer:

$20 dollars

Step-by-step explanation:

1.80 / .09 (9% in decimal form)

= 20

8 0

3 years ago

Jenny wants to paint the ceiling of her restaurant. the ceiling is in the shape of a square. its side lengths are 44 feet. suppo

inysia [295]

First we need to find the square footage of her ceiling, since it's a square just multiply the side by the side: 44•44=1936. Now divide the square feet by how many feet each can can paint: 1936/242=8. Jenny would need exactly 8 cans of paint to paint her ceiling :)

8 0

4 years ago