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2 years ago

Help please some one

Mathematics

1 answer:

GaryK [48]2 years ago

8 0

Answer:42

Step-by-step explanation:

16+16+10

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ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions

Gemiola [76]

Answer:

$t = 2.86 \: s$

The ball remains in the air for 2.86 seconds.

Step-by-step explanation:

A baseball is hit into the air, and its height above the ground is described by the function

$H(t) = -16t^2 + 45t + 2$

Where H(t) represents the height of the ball t seconds after it is hit.

The ball remains in the air before it hits the ground.

When the ball hits the ground,

$H(t) = 0$

So,

$0 = -16t^2 + 45t + 2$

The equation may be solved using the quadratic formula.

$t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Where

$a = -16 \\\\b = 45 \\\\c = 2 \\\\$

So,

$t=\frac{-(45)\pm\sqrt{(45)^2-4(-16)(2)}}{2(-16)} \\\\t=\frac{-45\pm\sqrt{(2025 - (-128)}}{-32} \\\\t=\frac{-45\pm\sqrt{(2153}}{-32} \\\\t=\frac{-45\pm 46.4004}{-32} \\\\t=\frac{-45 + 46.4004}{-32} \: and \: t=\frac{-45 - 46.4004}{-32}\\\\t= -0.04 \: and \: t = 2.86 \\\\$

Since the time cannot be negative, discard the negative value and accept the positive value

$t = 2.86 \: s$

Therefore, the ball remains in the air for 2.86 seconds.

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2 years ago

Find the standard form of x^2-4x 3

horrorfan [7]

I hope this helps you

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2 years ago

A portion of a daycare has been set aside for toddlers under 2. the area is a triangle with height 2.5 m and width 4 m. a scale

viva [34]

To find the width of the scale drawing of the toddler room, you can set up a proportion/ratio.

2.5 m/4 m= 5 cm/x cm

To get from 2.5 to 5, you multiplied by 2, so you will do the same thing to 4 to find the missing scale width.

4 x 2 = 8 cm

The width of the scale drawing is 8 cm.

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3 years ago

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The sum of Scott's age and Greg's age is 33. If Greg is represented by g, Scott's age is represented by

salantis [7]

Answer:

g+s=33

Step-by-step explanation:

I'm not sure if this is 100% correct, because you did not finish the question not provide me with answer choices. But I believe the answer should something along these lines.

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2 years ago

What are the domain and range of the real-valued function f(x)=2/x?

Marina CMI [18]

Answer:

here is your answer for the question

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