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Nostrana [21]
3 years ago
12

21x - 56 = -2 what is x?

Mathematics
2 answers:
kaheart [24]3 years ago
6 0

Answer:

I got 2.5

Step-by-step explanation

1) add 56 to both sides to get 21x = 54

2) divide both sides by 21

3) you should get 2.5

den301095 [7]3 years ago
5 0

Answer:

About 2.57

Step-by-step explanation:

21x-56=-2 \\\\21x=54 \\\\x\approx 2.57

Hope this helps!

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What is the volume of a box with sidelines that are 20 inches use the formula B equals S3 where is S is the length of one side
anastassius [24]

Answer:

The volume of a box with sidelines that are 20 inches is 8000 cubic inches

Step-by-step explanation:

The volume of a box with sidelines that are 20 inches can be determined by using the formula

B = S³

Where S is the length of one side

and B is the Volume

From the question, the sidelines of the box are 20 inches. That is

S = 20 inches

From

B = S³

B = (20 inches)³

B = 20 inches × 20 inches × 20 inches

B = 8000 cubic inches

Hence, the volume of a box with sidelines that are 20 inches is 8000 cubic inches.

4 0
3 years ago
What is the form of the Difference of Squares identity ? A. a ^ 2 - b ^ 2 = (a - b)(a - b) B. a ^ 2 + b ^ 2 = (a - b)(a - b); a
lozanna [386]
A^2 - b^2 = (a-b)(a+b)
To test it, expand the right hand side.
7 0
3 years ago
1/2(2+a)=3a+4/3 solve it
Mumz [18]
1/2(2+a)=3a+4/3

first, you use the distributive property<span>

</span>then your problem changes to...

1 + 1/2a = 3a + 4/3

then you subtract 1/2a with 3a

1  = 2 1/2a +4/3
<span>
now you subtract 1 with 4/3
</span>
-1/3 = 2 1/2a

now you divide -1/3 with 2 1/2a 

-2/15 = a

A = -2/15 is your answer. Hope this helps :)


4 0
3 years ago
Ype the correct answer in the box. Spell the word correctly.
Aliun [14]

Answer:This policy is known as COLONIZATION.

Colonization refers to the action of settling down among foreign indigenous people and establishing control over them. Politically, this action is usually carried out by powerful countries. The Europeans were able to colonize Africa, America and India.

Step-by-step explanation:

3 0
2 years ago
Three girls bought a pizza for lunch. One girl ate 1/3 of the pizza another girl ate 1/4 of the pizza and the third ate the rest
Bad White [126]
One ate  1/3,  Another ate = 1/4.

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Fraction the third girl got =  (The whole =1)  minus 7/12

=  1 - 7/12 =  (12 - 7) / 12 = 5/12

The third girl ate 5/12 of the pizza.
3 0
3 years ago
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