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Nuetrik [128]
3 years ago
12

Help me plzzzzzz........

Mathematics
2 answers:
artcher [175]3 years ago
7 0

Answer:

Step 1 was the first mistake

Step-by-step explanation:

7a = 28

7a/7 = 28/7

a = 4

Tanya [424]3 years ago
4 0

Answer:

Step 1

Step-by-step explanation:

You should isolate the variable, not try to get rid of it. Also, you have to divide both sides by the same number or variable(can't divide one side by a and the other side by 7- it has to be the same).

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Help please! thank you so much
umka21 [38]

Answer:

4 units ...................

4 0
2 years ago
Find the surface area of the cube shown below. units 2 2 squared
ruslelena [56]

The surface area of the cube with a side length of 2 units is 24 units squared

<h3>How to determine the surface area?</h3>

The side length of the cube is given as:

l = 2

The surface area is calculated as:

Surface area = 6l^2

This gives

Surface area = 6 *2^2

Evaluate

Surface area = 24

Hence, the surface area of the cube is 24 unit squared

Read more about surface area at:

brainly.com/question/13175744

#SPJ1

7 0
2 years ago
Multiplying Monomials and Binomials multiply 15w(w+15)
sleet_krkn [62]
The answer is 15w^2 + 225w


Key:

^ - Means that it is an exponent, in case you didn't know :)
3 0
3 years ago
If the perimeter of a rectangle is 124cm &amp; the width is 35cm, what is the length?
-BARSIC- [3]

Answer:

l=27

b=2×35=70

2l=124-70=54

l=54/2=27

6 0
3 years ago
If Fernando paid $450 for a netbook that was 75% of the original price, what was the original price?
Sav [38]

Answer:

$600

Step-by-step explanation:

75*100/450

7500/450

600

<em>Thank me later :)</em>

(<em>Or just give brainliest)</em>

4 0
3 years ago
Read 2 more answers
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