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DENIUS [597]
3 years ago
15

What is 7x-21=x+3 need step by step

Mathematics
1 answer:
Murrr4er [49]3 years ago
7 0

Answer:

\boxed {x = 4}

Step-by-step explanation:

Solve for the value of x:

7x - 21 = x + 3

-Take x and subtract it from 7x:

7x - 21 - x = x - x + 3

6x - 21 = 3

-Add both sides 21:

6x - 21 + 21 = 3 + 21

6x = 24

-Divide both sides by 6:

\frac{6x}{6} = \frac{24}{6}

\boxed {x = 4}

Thus, the value of x is 4.

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Pls!! I’m stuck on this question
Elena L [17]

Answer: 4x4=16, 6x6x6x6=1296, 1296+16=1312

the answer is 1312

Step-by-step explanation: find the area. 4x4, 6x6x6x6, the 3 is only there to throw you off you dont do anything with the 3

i think thats right

4 0
3 years ago
15. What is -130 = -9k - 4
Nostrana [21]

Answer: 14

Work: First, we must get rid of the four from the side it's currently on. So, we are going to add it on both sides. After adding four on both sides, I'll cancel on the side it was on, and the new equation is -126 = -9k. Now, we are going to divide -9 on both sides and yet again, I'll cancel on the side it was on. The answer is k = 14. It's a positive 14 because we divided a negative by a negative, and after doing so, the new number is a positive.

<em>I hope this helps, and Happy Holidays! :)</em>

8 0
3 years ago
Identify the relation that is also a function.
Tasya [4]

Answer:

A is a function; B, C and D are not.

Step-by-step explanation:

In other words:  Identify the sole function among these relationships.

A function maps any input onto exactly one output.

If a relationship maps any input onto more than one output, it is not a function.

Thus, we eliminate B, C and D.  In B, for example, we have the inputs {1, 2, 3}, where the '1' has two y-values associated with it.

On the other hand, A has the domain {-1, 0, 1, 2}, and all four inputs have exactly one associated output.

3 0
3 years ago
What is the domain of a cube root function?
fomenos

Answer:

C. All real numbers

Step-by-step explanation:

3 0
3 years ago
Heather has 62 homework problems to complete by tomorrow. She completed 21 of them at
S_A_V [24]

Answer:

62-21=41. She still has to do 41 questions.

4 0
3 years ago
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