1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VLD [36.1K]
3 years ago
13

The quadratic function h(t)=-16.1t^2 + 150 models a balls height, in feet, over time, in seconds, after it is dropped from a 15

story building. From what height, in feet, was the ball dropped?
Mathematics
1 answer:
RideAnS [48]3 years ago
8 0

The ball is dropped from a building and the quadratic function which models the ball`s height is:

h ( t ) = - 16.1 t² + 150

We can find the initial height if we calculate h ( 0 ), or the height for : t = 0 sec.

h ( 0 ) = -16.1 · 0² + 150 = 0 + 150 = 150 ft

Answer:

The ball was dropped from 150 feet.

You might be interested in
What is the distance between points (-23. 17) and (-3, -4)
Lelechka [254]
Here is the work to go with the answer it is hard to completely type out hope it helped!

5 0
3 years ago
What's the answer to this question
frutty [35]

Step-by-step explanation:

there are several things to be considered to solve this.

the strategy is to caucuses the volume of the full "box", and then to deduct the 3-dimensional triangle that is "cut off" from the oil.

then we know the volume of the pool.

next step is to calculate the volume of a "box" with the same layout but is only 20 cm deep.

then we know how much volume can be pumped out in 30 minutes.

and then we divide the whole volume by that small volume to see how many 30-minues units are needed to empty the whole pool.

and then we transform the 30- minutes units into actual minutes or hours.

so, let's begin :

the whole box's volume is

2×1×1.4 = 2.8 m³

the volume of the 3-D triangle we need to subtract is the area of the triangle × width of the pool (this pool width is the height of the 3-D triangle).

2×(1.4 - 0.6) × 1 / 2 = 2×0.8 × 1 / 2 = 1.6/2 = 0.8 m³

so, the volume of the pool is

2.8 - 0.8 = 2 m³

now, how much volume can the pump eliminate in 30 minutes ?

the content of a box

1×2×0.2 = 0.4 m³

as 20 cm = 0.2 m

so, the pump pumps out 0.4 m³ in 30 minutes.

and we need to empty 2 m³.

that means we need

2 / 0.4 = 5

30-minues units = 5×30 = 150 minutes = 2.5 hours.

Colin has to wait 2.5 hours (150 minutes) to empty the complete pool.

6 0
3 years ago
1. The sum of two numbers is 90. Their difference is 18. Find the numbers. A(40, 22) B(45, 45) C(36, 54) D(27, 63) E (40, 50) F
Genrish500 [490]

Answer:

36 and 54

Step-by-step explanation:

54-36=18

54+36= 90

3 0
3 years ago
Evaluate 8x6+(12-4) dived by 2
soldi70 [24.7K]

Answer:

52

Step-by-step explanation:

48+8/2

48+4

52

7 0
3 years ago
16^10 x 16^4 need the work
Alex787 [66]

Answer:

16^{10}*16^{4}  \\= 16^{14}

Property used: a^{m} * a^{n} = a^{m+n}

3 0
3 years ago
Other questions:
  • Find the percent markdown for an $80 jacket that is in sale for $48
    9·1 answer
  • Plzzz Help ASAP! This image shows a square pyramid what is the surface area of this square pyramid?
    14·1 answer
  • Suppose a poll is taken that shows that 765 out of 1500 randomly​ selected, independent people believe the rich should pay more
    12·1 answer
  • A lorry weighs 4.65 tonnes. It carries a load of 748 kg. What is the total weight of the lorry and its load?
    12·2 answers
  • Could you please awnser all 3 questions ​
    15·1 answer
  • SLOPE AND RATE OF CHANGE
    5·1 answer
  • Cine ma poate ajuta?
    13·1 answer
  • Which relationships have the same constant of proportionality between yyy and xxx as the equation y=\dfrac{5}{2}xy=
    11·1 answer
  • Marcelina uses a blend of white corn and yellow corn to make tortilla chips at her restaurant. She needs to buy
    7·1 answer
  • 11/25= /100. Explain
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!