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pickupchik [31]
3 years ago
10

2m+5=5(m-7)-3m equals??

Mathematics
2 answers:
Paha777 [63]3 years ago
7 0
2m + 5 = 5(m - 7) - 3m

2m + 5 = 5m - 35 - 3m

2m + 5 = 2m - 35

2m + 5 - 5 = 2m - 35 - 5

2m = 2m - 30

2m - 2m = 2m - 2m - 30

0 = -30

0 does not equal -30 - so this is an inequality - cannot solve for m

<u><em>No solution</em></u>
Svetradugi [14.3K]3 years ago
6 0
2m+5=5(m-7)-3m
first, use distributive property...
2m+5=5m-35-3m
next, combine like terms on the right side...
2m+5=2m-35
next, subtract 2m from both sides.
2m+5=2m-35
-2m   -2m
you will get....
5=-35 in which is not true. This means the equation has no solution.
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18/13=3/4x<br> what does x equal?
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Answer:

x = 24/13

General Formulas and Concepts:

<u>Pre-Alg</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

18/13 = 3/4x

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Divide both sides by 3/4:          x = 24/13

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    18/13 = 3/4(24/13)
  2. Multiply:                        18/13 = 18/13
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2 years ago
D divided by 4 plus 12 = 20<br> show steps<br> what is d
tester [92]

Answer:

d=32!!!

Step-by-step explanation:

So first rewrite it as an equation: d/4+12=20

d/4+12=20 then subtract 12 from both sides to balance the equation

d/4=8 so multply both sides by 4  to isolate the variable, 4(d/4)=d =d and 8x4=32, so d=32

4 0
2 years ago
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Sofia is learning to knit. After her first three stitches, she had to undo the last two. Then she made three more stitches and a
Marizza181 [45]
She’ll have to make 4 more stitches in order to get 6 good ones. Each time she creates 3 she undoes 2 which after 4 more times would leave her with 6 good stitches.
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3 years ago
4. Eddie drops a heavy book onto the floor. What does the energy of the book turn into when the book hits the floor?
Furkat [3]

Answer:

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Step-by-step explanation:

It starts off as potential energy, which is then converted to kinetic energy and by impact it'll develop a sound and heat energy.

Sound waves generates heat, and if some glass fell on the floor you can heat the shatter from the sound waves. The same goes for a book.

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Which answer is correct!?!?
Naya [18.7K]
46%d+57%y=55%x42
x+y=42

Find y

x=42-y

46%(42-y)+57%y=23.1
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11%y=3.79
y=34

The answer is D
6 0
3 years ago
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