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Tanya [424]
3 years ago
7

If x = 3 and y = -2, what is the value of the expression x^3-2xy^2?

Mathematics
1 answer:
Nana76 [90]3 years ago
7 0

Answer:

3

Step-by-step explanation:

The expression is x^3-2xy^2. To find the value, substitute the values x = 3 and y =-2 then follow order of operations.

x^3-2xy^2\\3^3 -2(3)(-2)^2\\27 -2(3)(4)\\27 - 24\\3

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Answer:  Average discharge at the mouth of the Amazon River in 1 hour = 1.764\times 10^{10} cubic feet

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Step-by-step explanation:

Given : The average discharge at the mouth of the Amazon River =4,900,000 cubic feet per second.

i.e. The average discharge at the mouth of the Amazon River  in 1 second= 4,900,000 cubic feet

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Then , the average discharge at the mouth of the Amazon River  in 1 hour =

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Step-by-step explanation:

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