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jenyasd209 [6]
3 years ago
13

A ball is thrown 178 m upward and then falls back to earth. Neglecting air resistance, how long will it be in the air? The accel

eration of gravity is 9.8 m/s 2 .
Mathematics
1 answer:
Marat540 [252]3 years ago
7 0

Answer: 12.06secs

Step-by-step explanation:

T = 2t

t = sqrt (2H/g)

H = 178 m

g = 9.8m/s2

t = sqrt (2H/g) = t = sqrt (2x178/9.8)

t = 6.03sec

T = 2t = 2 x 6.03 = 12.06secs

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Please assist, thank you.
ale4655 [162]

Answer:

392 ft²

Step-by-step explanation:

Break this area into two parts, that is, into two trapezoids.  The first trapezoid, on the left, has length 8 ft and average length (30 ft + 27 ft)/2, so its area is (8 ft)(28.5 ft) = 228 ft ².

The second trapezoid has width 8 ft and average length (19 + 22)/2 ft, or 8 ft by 20.5 ft).  The area of this part is 164 ft².

Thus, the total area is 164 ft² + 228 ft², or 392 ft²

8 0
3 years ago
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Greeley [361]

Answer:

(x-7)(x+7)

Step-by-step explanation:

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We know that a^2 -b^2 = (a-b)(a+b)

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6 0
4 years ago
If g(x) = x2 + 2, find g(3). (2 points) a 9 b 8 c 11 d 6
kap26 [50]

Answer:

c) 11

Step-by-step explanation:

g(x)= x² + 2

x = 3

substitute x for 3

g(3) = (3)² + 2

g(3) = 9 + 2

g(3) = 11

4 0
3 years ago
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igor_vitrenko [27]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
Kermit's favorite iced tea is made with 15 tea bags in every 2 liters of water. Peggy made a 12-liter batch of iced tea with 90
Anestetic [448]

Answer:

  C.  It is just right.

Step-by-step explanation:

We want to compare the ratios ...

  bags : liters = 15 : 2

and

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If we multiply the numbers of the first ratio by 6, we see they are identical to those in the second ratio:

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The ratio of bags to liters for Peggy's tea matches the ratio Kermit likes. He will think it is just right.

6 0
4 years ago
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