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mylen [45]
3 years ago
8

A ball is thrown straight up from the top of a building that is 400 ft high with an initial velocity of 64 ft/s. The height of t

he object can be modeled by the equation s(t) = -16t^2 + 64t + 400.
In two or more complete sentences explain how to determine the time(s) the ball is higher than the building in interval notation.
Mathematics
1 answer:
Schach [20]3 years ago
5 0

Answer:

This type of essay answer is pretty short.

You play out the equation and say what each part of the equation means.  The vertex in this case, because it's a downward facing parabola, is the highest point on the graph.  Now since they're kicking a ball, the vertex will be the highest point that the ball will go up to.

Hopefully this helps some.  For full points you'll probably have to add a bit of padding and further explanation.

Step-by-step explanation:

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Solve equation show all steps 3/8x=36
creativ13 [48]

Answer:

x = 96

Step-by-step explanation:

3/8x = 36

You have to multiply both sides of the equation by the inverse of the fraction to cancel it out.

(8/3)(3/8x) = (36)(8/3)

x = 96

5 0
3 years ago
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juanita works at a telemarketing company she makes an average of 12 sales per hour employees are encouraged to make more than 48
Vadim26 [7]

Answer:

26hr

Step-by-step explanation:

12 calls/hr

480 calls/wk

If Juanita has made 168 calls this week, it meants she still has to make 312 calls. So, 312 calls ÷ 12calls/hr = 26hr

Juanita needs to work 26hr mores to reach the weekly goal.

6 0
3 years ago
Using the figure below, what is the value of y?
Bess [88]

Answer:

  C.  132

Step-by-step explanation:

We assume all angle measures are in degrees. The vertical angles are equal in measure, so ...

  4x = x +36

  3x = 36

  x = 12

  x +36 = 48

  y = 180 -48 = 132

The value of y is 132.

6 0
3 years ago
Divide el rufini6x-4x+2 entre x-2<br> x+2x+x+2 entrex+2
Mashcka [7]

Answer:

Combine Like terms and do the Equation normally

Step-by-step explanation:

8 0
3 years ago
2(x-1) ≥ 10 or 3-4x &gt; 15<br> Solve the compound inequality, and show work!
Veseljchak [2.6K]

Answer:

x\geq 6\text{ or } x

Step-by-step explanation:

We have the compound inequality:

2(x-1)\geq10\text{ or } 3-4x>15

Let's solve each of them individually first:

We have:

2(x-1)\geq10

Divide both sides by 2:

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Add 1 to both sides:

x\geq6

We have:

3-4x>15

Subtract from both sides:

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Divide both sides by -4:  

x

Hence, our solution set is:

x\geq 6\text{ or } x

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3 years ago
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