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Anni [7]
2 years ago
6

5 + 4x - 2x = 8x + 11 + 12 Explain step by step PLEASE

Mathematics
2 answers:
mario62 [17]2 years ago
6 0
Simplify
5
+
4
x
−
2
x
5+4x−2x to
5
+
2
x
5+2x.
5
+
2
x
=
8
x
+
11
+
12
5+2x=8x+11+12

2 Simplify
8
x
+
11
+
12
8x+11+12 to
8
x
+
23
8x+23.
5
+
2
x
=
8
x
+
23
5+2x=8x+23

3 Subtract
5
5 from both sides.
2
x
=
8
x
+
23
−
5
2x=8x+23−5

4 Simplify
8
x
+
23
−
5
8x+23−5 to
8
x
+
18
8x+18.
2
x
=
8
x
+
18
2x=8x+18

5 Subtract
8
x
8x from both sides.
2
x
−
8
x
=
18
2x−8x=18

6 Simplify
2
x
−
8
x
2x−8x to
−
6
x
−6x.
−
6
x
=
18
−6x=18

7 Divide both sides by
−
6
−6.
x
=
−
18
6
x=−
6
18
​


8 Simplify
18
6
6
18
​
to
3
3.
x
=
−
3
x=−3
Yuliya22 [10]2 years ago
4 0

Answer:

The solution is x = -3

Step-by-step explanation: Please brainliest!

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Step-by-step explanation:

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A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 5 ​hours, while the outlet pipe can empty it
Rashid [163]

Answer:

                 time=40/3hours\approx 13.3hours

Step-by-step explanation:

The rates are additive: you can calculate the<em> inlet </em>rate and the <em>outlet</em> rate and add them algebraically, i.e. the inlet rate will be positive and the outlet rate will be negative.

<u>1. Inlet rate:</u>

1vat/5hours

<u />

<u>2. Outlet rate:</u>

1vat/8hours

<u>3. Net rate:</u>

            \text{Inlet rate - outlet rate}=1vat/5hours-1vat/8hours\\\\ \text{Net rate}=(8-5)vat/40hour=3vat/40hour=(3/40)vat/hour

<u>4. Time to fill the vat</u>

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7 0
3 years ago
Shelley's pet food store sold one customer 5 peanut butter biscuits for $3. She sold another customer 7 beef treats for $4.20. W
arsen [322]

Given that,

Shelley's pet food store sold one customer 5 peanut butter biscuits for $3. She sold another customer 7 beef treats for $4.20.

For peanut, the cost is ratio is

\dfrac{5}{3}

For beef, the ratio is

\dfrac{7}{4.2}

If we take cross product of these items,

\dfrac{5}{3}=\dfrac{7}{4.2}\\\\5\times 4.2=3\times 7\\\\21=21

It implies, that the sale is in true proportion. From the cross product, we find that it is equal.

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2 years ago
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3 years ago
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Leya [2.2K]
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4 0
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