4 years ago

If 430 pounds of pebbles cover 1500 square feet, how many pounds of pebbles are necessary to cover 75,000 square feet?

Mathematics

1 answer:

drek231 [11]4 years ago

5 0

6500 pounds are necessary to cover 75000 square feet

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Solve 4(x + 2) = 20

KiRa [710]

Answer:

x = 3

Explanation:

$\sf 4(x + 2) = 20$

$\sf 4x + 8 = 20$

$\sf 4x = 20 - 8$

$\sf 4x = 12$

$\sf x = \frac{12}{4}$

$\sf x = 3$

check:

4(x + 2) = 20

4(3 + 2) = 20

4(5) = 20

20 = 20

Hence proved x = 3

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Ivan

So, plug in what you're given and solve
x is -2
(3x) * 9
(3 (-2)) * 9
-6 * 9
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then
27(-2)
-54
For the first it's the same

for the second
x is 0
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(3 (0)) * 9
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For the second it's the same

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The given expressions are equivalent. This was proved in the diagram.

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