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aev [14]
3 years ago
9

an object is launched at 4 ft./s from 88 foot tall platform the objects height H in feet after T seconds is given by the equatio

n H=-16T^2+8t+80 when does the object strike the ground
Mathematics
1 answer:
posledela3 years ago
8 0

Answer:

1.5seconds

Step-by-step explanation:

When the ball hits the ground, the height is equal to zero. So find t when H=0:

H=16t²+8t+80

0=16t²+8t+80

0=2t²+t+10

0=(2t-3)(t+2)

So (2t-3)=0, or (t+2)=0

So t=1.5 or t=-2. Time can't be negative though, so we take our answer as 1.5seconds

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Answer: 4th table

Step-by-step explanation:

Each time x increases by 1, y increases by 2. Since there is a constant increase in y for each time x increases by 1, the table represents a linear function.

4 0
2 years ago
A fish is 5 feet below the surface of a lake. If its position can be recorded as -5 feet what would the position of 0 represent
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The surface of the lake.
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3 years ago
What's 420 seconds to 10 minutes
Neporo4naja [7]
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7 0
3 years ago
Find the diagonal of a rectangular frame which measures 77 in. by 36 in.
Cerrena [4.2K]

Answer:

85

Step-by-step explanation:

think about the diagonal of the frame, breaking up a rectangle into 2 right angled triangles. we are already given the legs of the triangle (77, and 36) and now we have to solve fro the hypotenuse (or the diagonal). so use pythagorean theorem :

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5 0
3 years ago
An Air Force plane flew to the
Free_Kalibri [48]

Answer:

5 hours

Step-by-step explanation:

Time taken for trip : t + 1

Time taken for return : t

Avg. speed (trip) : 256 km/h

Avg. speed (return) : 320 km/h

The distances covered on both trips are equal.

⇒ Distance (trip) = Distance (return)

⇒ Speed (trip) × time (trip) = Speed (return) × time (return)

⇒ (256)(t + 1) = (320)(t)

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⇒ t = 4 hours

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2 years ago
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