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VMariaS [17]
3 years ago
10

A ball is thrown straight up from the top of a building that is 280 feet high with an initial velocity of 48 ft/s. The height of

the object can be modeled by the equation s(t)=−16t2+48t+280.
In two or more complete sentences explain how to determine the time(s) the ball is higher than the building in interval notation. Then, determine the time.​
Mathematics
2 answers:
Pani-rosa [81]3 years ago
7 0

Answer:

i hope it helpful

thank you

Alex3 years ago
7 0

Answer:

Answer in interval notation is (3, 5.94].

Step-by-step explanation:

First find the time that the ball is level with the top of the building on its descent. You can do this by solving 280 = -16^2 + 48t + 280 for t. This gives t = 3 seconds .

Then when the ball reaches the ground the time t is obtained by solving 0 = -16t^2 + 48t + 280 This gives t = 5.94

seconds.

Answer in interval notation is (3, 5.94].

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PLEASE HELP :(!!!!!!!!
Levart [38]

Answer:

19/3 > square root of 37 > 6.08171 > 6.012

4 0
3 years ago
A right triangle has an area of 18 The length of each leg is 6 inches. If the triangle is not an isosceles triangle, what are al
ladessa [460]

Given:

Area of a right triangle = 18 sq. inches

Length of one leg = 6 inches

To find:

The length of another leg.

Solution:

We know that, the area of a triangle is

A=\dfrac{1}{2}\times base\times height

In a right angle triangle, the area of the triangle is

A=\dfrac{1}{2}\times leg_1\times leg_2

Putting A=18 and leg_1=6, we get

18=\dfrac{1}{2}\times 6\times leg_2

18=3\times leg_2

Divide both sides by 3.

\dfrac{18}{3}=leg_2

6=leg_2

Both legs are equal so the given triangle is an isosceles right triangle.

If the triangle is not isosceles triangle, then the length of legs are factors of 36 because half of 36 is 18.

Therefore, the possible pairs of legs are 1 and 36, 2 and 18, 3 and 12, 4 and 9, 6 and 6, 9 and 4, 12 and 3, 18 and 2, 36 and 1.

5 0
3 years ago
Wynona buys some new boots that are priced $85.79. She gets successive discounts of 10% followed by 5% off on the boots. The pur
kotegsom [21]

Answer:84.5%

Step-by-step explanation:Subtract  85.79 from 10.5 that will give you 84.5.

3 0
3 years ago
What is 322 divided by 15 ?
Murrr4er [49]
   Your answer is 21 7/15
3 0
3 years ago
Read 2 more answers
Evaluate the following expression for c = - 3. - 3c² + c - 2c
Leno4ka [110]
When c = -3,
-3c² + c - 2c = -3c² - c
= -3(-3)² - (-3)
= -24
6 0
3 years ago
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