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maxonik [38]
3 years ago
6

Can someone help me understand squares,cubes,and roots with example problems please

Mathematics
1 answer:
erastova [34]3 years ago
4 0

when someone says a number squared or cubed, or to the certain power, it means how many times you multiply the base number by itself that many times, for example

2²= 2 * 2

or 9³ = 9 x 9 x 9

a square root or cube root, is a harder to understand, but still somewhat simple, it basically means how many what number squared or cubed equals this number.

so for example the square root of 9 = 3 because 3 x 3=9

or cube roots for example ∛125= 5 because 5 x 5 x 5

So here is an example one for you. √81.

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What is the domain of y=4[x+2]? all real numbers all integers all multiples of 4 all multiples of 8
Ghella [55]

All real numbers.

No matter what you plug in, there will always be a corresponding y - value.

6 0
3 years ago
Show and explain how replacing one equation by the sum of that equation and a multiple of the other produces a system with the s
My name is Ann [436]
First, let's multiply the first equation by two on the both sides:
<span>8x + 7y = 39         /2
</span>⇒ 16x + 14y = 78

Now, the system is:
<span>16x + 14y = 78
</span><span>4x – 14y = –68
</span>
After adding this up in the column:
(16x + 4x) + (14y - 14y) = 78 - 68
20x = 10
⇒ x = 10/20 = 1/2


y can be calculated by replacin the x:
<span>8x + 7y = 39
</span>⇒ 8 · 1/2 + 7y = 39
4 + 7y = 39
7y = 39 - 4
7y = 35
⇒ y = 35 ÷ 7 = 5
3 0
3 years ago
Read 3 more answers
Which expressions are equivalent to, 8m + 6 *
guajiro [1.7K]

Answer:

4m + 4m + 6

3+3+5+3

10m+12+(-2m)-6

Step-by-step explanation:

Welcome

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3 years ago
How can we solve proportions? ( 2 words)
Vilka [71]

Answer:

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Inequality

Step-by-step explanation:

3 0
3 years ago
This is the choices <br> 88<br> 70<br> 110<br> 120
s344n2d4d5 [400]

Answer:

110

Step-by-step explanation:

Y and X have to equal 180

70+x+180

=110

7 0
3 years ago
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