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Ugo [173]
3 years ago
10

Football The function defined by h = -5t² + 20t + 2 indicates the approximate height h of a soccer ball. in meters according to

the elapsed time t in seconds, since it was launched. This ball hit the ground before a receiver managed to approach it. How much time has the balloon spent in the air, to the nearest tenth of a second! For how many seconds was he at a height of at least 17 m?
Mathematics
1 answer:
timama [110]3 years ago
4 0
3 seconds for the second question

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gizmo_the_mogwai [7]

Answer:

b. the triangles are congruent by ASA

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6 0
2 years ago
The diameter of a tennis ball is 2 cm and the diameter of the softball is 1 cm. About how many times as
zmey [24]

Step-by-step explanation:

It is given that,

The diameter of a tennis ball is 2 cm and the diameter of the softball is 1 cm. So, radius of tennis ball is 1 cm and radius of softball is 0.5 cm.

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Taking ratio of both balls, i.e.

\dfrac{A_1}{A_2}=\dfrac{r_1^2}{r_2^2}

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4 0
3 years ago
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givi [52]

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Step-by-step explanation:

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Rzqust [24]
Since -1 has passed the x-axis & y-axis it's be (-1,-1) 
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Answer:

a

Step-by-step explanation:

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