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2 years ago

A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is

Mathematics

1 answer:

Degger [83]2 years ago

6 0

Answer: So the ball hits the ground 4.06 secs after it's kicked.

Step-by-step explanation:h(t)= -16t^2 +64t +4

h(t)= -4( 4t^2 -16t -1) so a=4 b=-16 c=-1

Use Quadratic Formula: x=( -b+/- (b^2-4ac)^1/2)/ 2a

(16+/- ( 256-(4)(4)(-1))^1/2)/8= (16 +/- (272)^1/2)/8

x= (16+/-16.49)/8 ---->x=32.49/4= 4.062 sec

x=(16-16.49)/8 -----> x= -0.49/8= -0.06

So the ball hits the ground 4.06 secs after it's kicked.

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Which best explains the relationship between lines a and b? They are skew and will never intersect. They are parallel and will n

r-ruslan [8.4K]

Answer:

They are skew and will never intersect.

Step-by-step explanation:

see attachment for the missing figure

Lines a and b are skew lines since they are not parallel and they do not intersect. The explanation that they don't intersect is on the grounds that each line is in a parallel plane. Parallel means heading off to the same direction but neither converging nor diverging.

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3 years ago

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What is the measure of angle R? A. 30° B. 50° C. 100° D. 180°

Ivenika [448]

Answer:

100

Step-by-step explanation:

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2 years ago

The speed of sounds in water is 1.46 x 10^3 meters per second. The speed of sound in air is 3.31 x 10^2 meters per second. How m

dlinn [17]

Answer:

Hey there!

1.46x10^3-3.31x10^2

14.6x10^2-3.31x10^2

11.29x10^2

1.129x10^3

J is the correct answer.

Hope this helps :)

6 0

3 years ago

A newly launched clothing line is rapidly increasing in popularity. Every month 20% more items of clothing are sold. If 70,800 i

prohojiy [21]

Answer:

212,400 items were sold in 10 months.

Step-by-step explanation:

Given:

Items sold this month = 70,800

Percent Increase in every month = 20%

We need to find number of items sold in coming 10 months.

Solution:

First we will find number of items increase in each month.

number of items increase in each month can be calculated by Percent Increase in every month multiplied by Items sold this month and the divided by 100.

number of items increase in each month = $\frac{20}{100} \times 70800 = 14,160$