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otez555 [7]
3 years ago
12

A rectangular room is 2 times as long as it is wide, and its perimeter is 30 meters. Find the dimension of the room.

Mathematics
1 answer:
disa [49]3 years ago
8 0

Answer:

5 by 10

Step-by-step explanation:

We know that the equation of a perimeter of a recangle is 2(l)+2(w), l being length and w being width. We know that l=2w. So the perimeter of this room would be:

2(2w)+2(w)=30

4w+2w=30

6w=30

w=5

l=2w

l=10

the dimensions are 5 by ten

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Step-by-step explanation:

Solution for What is 75 percent of 600:

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Percentage solution with steps:

Step 1: Our output value is 600.

Step 2: We represent the unknown value with $x$x​.

Step 3: From step 1 above,$600=100\%$600=100%​.

Step 4: Similarly, $x=75\%$x=75%​.

Step 5: This results in a pair of simple equations:

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Step 7: Again, the reciprocal of both sides gives

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