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kvv77 [185]
3 years ago
10

Subtract -7x + 6 from -2x^2 + 9x - 2

Mathematics
1 answer:
JulsSmile [24]3 years ago
4 0

Answer:

( - 2 {x}^{2}  + 9x - 2) - ( - 7x + 6) \\   = - 2 {x}^{2}  + (9 + 7)x + ( - 2 - 6) \\  =  - 2 {x}^{2}  + 16x - 8

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Find the height of a square pyramid that has a volume of 75 cubic feet and a base length of 5 feet.
Rudiy27

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9 ft

Step-by-step explanation:

Let's begin with the formula for the volume of a square pyramid.  If s is the base length, then the area of the base is s^2.  The volume of the pyramid is then V = (1/3)(base area)(height).  We know the volume and the base length (s), and want to find the height.  Solving V = (1/3)(base area)(height)

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---------------- = height

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Substituting 75 ft^3 for V and (5 ft)^2 for base area, we get:

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Can someone help w/ 3 and 4 please??
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