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RoseWind [281]
3 years ago
11

Justify each step in solving the equation 4x = 7(x-3) by writing a reason for each statement

Mathematics
1 answer:
abruzzese [7]3 years ago
8 0
Start with parenthesis so that will be 7x -21so then  you will get 4x = 7x -21 then you will subtract 7x and 4x and you will get -3x = -21 and your answer is 7 because both numbers are a negative and that will equal a positive.
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X=5-3Y<br> X=2Y-10<br> Whats the answer
prohojiy [21]
X = 5 - 3y
x = 2y - 10

5 - 3y = 2y - 10
<u>  + 3y + 3y        </u>
       5 = 5y - 10
  <u>+ 10        + 10</u>
     <u>15</u> = <u>5y</u>
      5      5
       3 = y
x = 2y - 10
x = 2(3) - 10
x = 6 - 10
x = -4
(x, y) = (-4, 3)
6 0
3 years ago
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gregori [183]

Answer:

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7 0
2 years ago
I need help with this <br>7f + 2f - 3b + b<br><br>I can't figure it out ​
Leni [432]

Answer:

9f-4b

Step-by-step explanation:

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5 0
2 years ago
The variable z is directly proportional to x, and inversely proportional to y. When x is 4 and y is 13, z has the value 1.230769
Talja [164]

Answer:

Step-by-step explanation:

1.2307692307692.

The first step is to find the proportionality constant.

The formula is

z = kx/y

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1.2307692307692 * 13 = 4k

16 = 4*k                                            Divide by 4

k = 16/4

k = 4

=================================

z = k*x/y

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y = 20

k = 4

z = 4 *9/20

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7 0
2 years ago
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Trava [24]
<h2>Answer:</h2>

$0.32.

<h2>Explanation:</h2>

1 gallon = 128 fluid ounces.

So to find the price of an 8 ounce glass of Moo Milk we need to multiply (8/128) x 5.12.

That equals $0.32.

6 0
3 years ago
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