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3 years ago

5

Johnson Construction Company is going to build a house on a concrete slab. The slab is to have dimensions 30 feet by 20 feet by

2 feet. How many cubic feet of concrete should the construction company order

1 answer:

soldi70 [24.7K]3 years ago

3 0

Answer:

1200ft^3

Step-by-step explanation:

30 x 20 x 2= 1200^3

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3 years ago

Determine the value of a + b in the system of equations below. <br><br> 5a + 4b = 22<br> 7a-b= 11

dexar [7]

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We have a + b as;

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Step-by-step explanation:

Here, we want go get the value of a and b

from the second equation, we can get an expression for b

We have this as;

7a - b = 11

Thus,

b = 7a - 11

Now, from here, we can substitute the value of b into the first equation

We have this as;

5a + 4(7a - 11) = 22

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b = 7a - 11

substituting the value of a from above;

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3 years ago