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lord [1]
3 years ago
13

How many bricks 9.5 cm wide x 20 cm long are required to cover a patio 4 meters wide by 5 meters long?

Mathematics
1 answer:
Luden [163]3 years ago
5 0
So you need to know the area of patio in cm, so you need to caculate area and than convert. 

4 x 5 = 20 m
20 m = 200000 cm

once you know area, you need to know the area of bricks.

9.5 x 20 = 190

Than divide patio area by brick area
200000 divide 190 = 1052 .63

since there cant be 1052.63 bricks, just round up to 1053.

so 1053 bricks are required for this patio.

Hope this helped!
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The sum of two numbers is negative fifteen, and one number is five less than the other. Using the variables m and n to represent
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We need to use the variables m and n to represent both numbers.

Their sum must equal -15. Therefore, we can write the next equation:

m + n = -15

If one number is five less than the other, we need to choose one variable and then we can write it in terms of the other variable. Then:

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To find the value for each number, we can replace the n equation on the first equation:

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The equations separated by a comma are m + n = -15,n = m-5.

The numbers separated by a comma are -5,-10.

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