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Zinaida [17]
3 years ago
10

Please help quick! It is due in 20 min! Please help!

Mathematics
1 answer:
Korvikt [17]3 years ago
3 0

Answer:

Step-by-step explanation:

1. (a + b) (a - b)

2. 2

3. 4.5 or 4\frac{1}{2} or \frac{9}{2} or if u wanna round up then 5

hope this helps :)

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Ulleksa [173]

Answer:

Step-by-step explanation:

t=(-2.74 + sqrt(2.74^(2)-4*-4.9*(-10))) / -2*-4.9

t=(-2.74 + sqrt(7.5076-4*+49))/9.8

t=(-2.74 + sqrt(7.5076+45))/9.8

t=(-2.74 + sqrt(52.5076))/9.8

t=(-2.74/9.8)+(sqrt(52.5076))/9.8

this is simplest form, next will be rounded answers

t=0.45981763305

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Step-by-step explanation:

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