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svet-max [94.6K]
3 years ago
11

Expand and combine like terms. (7b^5-4b)(7b^5+4b)=

Mathematics
1 answer:
adoni [48]3 years ago
7 0

Answer:

49b^10 -16b^2

Step-by-step explanation:

(7b^5)^2 -(4b)^2=

49b^10 - (4b)^2=

49b^10 - 16b^2

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after 1 second the ball is 76 feet in the air: after 2 seconds it is 144 feet in the air. Find the height of the function. h(x)=
MArishka [77]
General equation for height, h
h = ut + 0.5gt^2

at t=1s, h = 76 feet
76 = u*1 + 0.5*a*1^2
76 = u + 0.5a

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0.5a = -4
a = -8
u = 80

So the equation,
h(x) = 80t + 0.5*(-8) t^2
h(x) = 80t - 4t^2
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3 years ago
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Answer:

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Step-by-step explanation:

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