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Serjik [45]
3 years ago
7

What is the value of x if 3x - 6 = 21 ?

Mathematics
2 answers:
bearhunter [10]3 years ago
5 0

Hello There!

X=9

If we substitute X in this equation, it would say 3*9 which equals 27 subtract 6 and you get 21 which is true.

Anestetic [448]3 years ago
3 0

Answer:

<h2>x = 9</h2>

Step-by-step explanation:

3x-6=21\qquad\text{add 6 to both sides}\\\\3x-6+6=21+6\\\\3x=27\qquad\text{divide both sides by 3}\\\\\dfrac{3x}{3}=\dfrac{27}{3}\\\\x=9

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Again pls help out!
Lyrx [107]

Answer:

okay so I think its, horizontal shift right 2 and a vertical shift down 1

Step-by-step explanation:

so x says + 2 so right 2 and y says -y so down 1..?

I'm kinda rusty tho so yeah

5 0
2 years ago
Jenny wash dishes four times as many times as her brother last month. Her brother wash dishes eight times. Jenny said she could
Ymorist [56]
Answer: yes, Jenny is correct.

Explanation.

Analysis step by step.

1) Jenny's brother washed dishes 8 times.

2) Jenny washed dishes 4 * 8 = 32

3) The difference is 4 * 8 - 8 = (4 - 1) * 8 = 3*8 = 24.

4) Jeeny washed dishes 32 times, while her brother washed dishes 8 times, so, indeed, she washed 3 * 8 more dishes than her broter and she is correct.

You must realize that although she washed 4 times the number of dishes that her brother did, the difference is just 3 times: 32 - 8 = 24 = 3 * 8
3 0
4 years ago
The length of the sides of a triangle are x, 2x+2, and 13. If the perimeter of the triangle is 30, what is the value of x?
scZoUnD [109]

Add all the sides up to equal 30 in an equation because you are given the perimeter. The perimeter is the length around a two dimensional shape. This means the perimeter is the length of all the side lengths added together.

(x) + (2x + 2) + (13) = 30

Combine like terms.

3x + 15 = 30

Subtract 15 from both sides.

3x = 15

Divide both sides by 3.

\boxed {x = 5}

3 0
4 years ago
Identify the Pythagorean triple.
Phantasy [73]

Answer:

I'm almost positive it's .A but I'm not sure

4 0
3 years ago
Read 2 more answers
A computer monitor is 20 inches wide. The aspect ratio, which is the ratio of the width of the screen to the height of the scree
Usimov [2.4K]

Answer:

45/4 inches closer 11

Step-by-step explanation:

16/9 = 20/x

9/4= x/5

45/4 inches = x

11< x< 12

7 0
2 years ago
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