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juin [17]
2 years ago
5

the sum of three times a number and 2 less than 4 times the same number is 15. which of the following equations could be used to

find the value of the number m, n? explain how you arrived at your choice.
Mathematics
1 answer:
Ulleksa [173]2 years ago
4 0
To solve for a number x,

3x+4x-2=15
7x-2=15
7x=17
x=2 3/7
or x=~2.43

was one of your answer choices either of the first two equations?
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E. 5√4^3

Step-by-step explanation:


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The sides of a rectangle are 3t - 2 and 5t + 7. Write an expression for the perimeter of the rectangle.
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Lucy had 3 2/3 gal of paint. After painting a room she had 1 1/4 gal left how many gallons of paint did Lucy use to paint a room
garik1379 [7]

Answer:

2 \frac{5}{12}

gallons of paint was used by Lucy.

Step-by-step explanation:

3\frac{2}{3}  - 1\frac{1}{4}  =  \frac{44}{12}  -  \frac{15}{12} =  \frac{29}{12}

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7 0
3 years ago
13 = m/4 + 7 can you show work too
lukranit [14]

The correct value of this equation is <u>m = </u><u>24</u>

<h3>Resolution method</h3>

This equation contains a fractional term. We note that the denominator of this equation is the <u>term 4</u>. Therefore, we will multiply the sides by <u>4</u>:

13 = m/4 + 7

13 . 4 = 4(m/4) + 7 . 4

52 = m + 28

Now, let's isolate the variable "as negative" and after the equality - we'll be subtracting the terms:

52 = m + 28

-m = 28 - 58

-m = -24

<u>m = 24</u>

Therefore, the correct value of this equation will be <u>m = 24</u>

7 0
1 year ago
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