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Kazeer [188]
3 years ago
6

What is the value of x in the equation 5(4x-10)+10x=4(2x-3)+2(x-4) ?

Mathematics
2 answers:
MrRissso [65]3 years ago
6 0
5(4x - 10) + 10x = 4(2x - 3) + 2(x - 4)
20x - 50 + 10x = 8x - 12 + 2x - 8
30x - 50 = 10x - 20
30x - 10x = -20 + 50
20x = 30
x = 3/2 <==
PilotLPTM [1.2K]3 years ago
3 0

Answer:

\frac{3}{2}

Step-by-step explanation:

Here, the given expression is,

5(4x-10)+10x=4(2x-3)+2(x-4)

By distributive property,

20x - 50 + 10x = 8x - 12 + 2x - 8

By combining like terms,

30x -50=10x-20

Adding 50 on both sides,

30x=10x-20+50

30x = 10x + 30

Subtracting 10x on both sides,

20x = 30

Divide both sides by 20,.

x=\frac{3}{2}

Hence, LAST option is correct.

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A shade of green paint is made by mixing blue paint and yellow paint in the ratio of 4 to 3. How many pints of blue paint and ye
nexus9112 [7]

Answer:

Blue = 12

Yellow = 9

Step-by-step explanation:

Given

Blue : Yellow = 4 : 3

Required

Determine the number of pints of each to make 21 of green paints

First, calculate the total ratio.

Total = 4 + 3

Total = 7

The blue and the yellow pint can be represented individually as:

Blue = \frac{4}{7} * Green

Yellow = \frac{3}{7} * Green

Number of blue paint calculated last week is:

Blue = \frac{4}{7} * 21

Blue = {4} * 3

Blue = 12

Yellow = \frac{3}{7} * Green

Yellow = \frac{3}{7} * 21

Yellow = {3} * 3

Yellow = 9

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3 years ago
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irinina [24]

Answer:

78.5 in ^2

Step-by-step explanation:

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4 0
3 years ago
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andriy [413]

Answer:

7.15 (two sig figs)

Step-by-step explanation:

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8 0
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Read 2 more answers
Answer the following questions.
serg [7]
39 is <span>312% </span>of 12.5

To find this you just divide 12.5 into 39 which gives you 3.12. To change that to a percentage you multiply by 100 which gives you 312%

7.5 is <span>102% </span>of 7.38

To find this you just divide 7.38 into 7.5 which gives you 1.0162, which I rounded to 1.02. To change that to a percentage you multiply by 100 which gives you 102%

I hope this helped! :)
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Superman is 100 mph

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