3 years ago

Sry the picture is blurry ask me of want to right it out.

Mathematics

1 answer:

bixtya [17]3 years ago

3 0

The one that has multiplication

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A ball is kicked in the air. The height of the ball can be calculated using the equation h(t) =-16t^2+64t+190, where h is in hei

gregori [183]

Answer:

Therefore the ball strikes the ground 5.98 s after kick.

Step-by-step explanation:

Given that , a ball is kicked in the air. The height of the ball can be calculated using the equation $h(t)=-16t^2+64t+190$ where h is height in feet and t is time in second.

When the ball touches the ground then the height will be zero.

i.e h(t)=0

Therefore

$-16t^2+64t+190=0$

$\Rightarrow -2(8t^2-32t-95)=0$

Since -2≠0 then $(8t^2-32t-95)=0$

$(8t^2-32t-95)=0$

[The solution of a quadratic equation ax²+bx+c=0 is

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$ here a=8, b=-32 and c=-95]

$\Rightarrow t =\frac{-(-32)\pm\sqrt{(-32)^2-[4\times8\times(-95)]} }{2\times8}$

$\Rightarrow t =\frac{32\pm\sqrt{4064} }{16}$

Therefore t= 5.98 or -1.98

since time can not be negative So , t=5.98 s

Therefore the ball strikes the ground 5.98 s after kick.

5 0

3 years ago

.. Carmen bakes and sells pies. She sells each pie for $12.99. The ingredients for 1 apple

Rainbow [258]

Answer: $21.20

Step-by-step explanation:

first, find the profit carmen makes on each pie

12.99 - 8.75 = 4.24

now, we multiply that by the 5 pies that she sold to see what profit she made

4.24 x 5 = 21.2

$21.20

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3 years ago

PIT_PIT [208]

How many piles the plates are stacked in I think

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3 years ago

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How do you solve l v

likoan [24]

Subtract x and mutiply v and add the answer

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3 years ago

During a 12-hour period, the temperature in a city dropped from a high of 60°F to a low of -25°F. What was the range of the temp

dexar [7]

29 because I got it right just kbow

4 0

3 years ago

Sry the picture is blurry ask me of want to right it out.​

Sry the picture is blurry ask me of want to right it out.