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Vesna [10]
4 years ago
14

Solve for x: (2/5)(x-4)=2x​

Mathematics
1 answer:
NARA [144]4 years ago
8 0

Simplify brackets

2/5(x - 4) = 2x

Simplify 2/5(x - 4) to 2(x - 4)/5

2(x - 4)/5 = 2x

Multiply both sides by 5

2(x - 4) = 10x

Divide both sides by 2

x - 4 = 5x

Subtract x from both sides

-4 = 5x - x

Simplify 5x - x to 4x

-4 = 4x

Divide both sides by 4

-1 = x

Switch sides

<u>x = -1</u>

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ValentinkaMS [17]

There are 1760 yards in one mile and the rink is 250 yard in perimeter.

This means 3 miles is 5280 yards. 

 

If Sam has already gone around the whole rink 6 times, that means he was traveled a total of 1500 yards.  

Sam has 3780 more yards to travel 3 miles.

This means he needs to do 15.12 more laps around the rink.  Or 16 if you are rounding.

Hope this helps! :)

5 0
3 years ago
HELP THIS IS DUE IN 5 MINSSSSS! Mr. Viviano would like to report to the principal the smaller measure of center between the mean
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Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
Simplify the expression.<br> 7m+6+2m+7
gulaghasi [49]

Answer:

9m + 13

Step-by-step explanation:

1. Collect like terms.

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There for the answer is, 9m + 13

7 0
3 years ago
What is the area of this figure?
coldgirl [10]
Answer: 102

-----------------------------------------------

We'll use the formula 
A = h*(b1+b2)/2
where
A = area of trapezoid
h = height
b1 & b2 are the parallel bases

In this case,
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b2 = 21
h = 6

Making the area to be
A = h*(b1+b2)/2
A = 6*(13+21)/2
A = 6*(34)/2
A = 204/2
A = 102

Side Note: We don't use the slanted side of 10 cm at all

3 0
4 years ago
What is the relationship between the two expressions: 1/2 +3/4 and 10(1/2 + 3/4)
Harlamova29_29 [7]

9514 1404 393

Answer:

  the latter is 10 times the former

Step-by-step explanation:

The latter expression is the same as the former expression, but with a factor of 10 multiplying it. The second expression is 10 times the first.

7 0
3 years ago
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