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
levacccp [35]
3 years ago
14

A rock is dropped from a height of 25 feet. The function h=-16t^2 +25 gives the height h of the rock after t seconds. When does

it hit the ground?
Mathematics
1 answer:
scZoUnD [109]3 years ago
3 0

Answer:

5 seconds

Step-by-step explanation:

The ground is 25 eet, so 25=-16t^2+400

-16t^2=-400, 16t^2=400

t^2=25, dividing both sides by 16

t=5 seconds.

You might be interested in
- Inessa ran 3 laps in 10 minutes. How long
Anni [7]

Answer: 16 minutes and 40 seconds

Step-by-step explanation:

1.) Divide 10 minutes by 3 laps in order to find out how long it takes her to run a single lap. (it ends up being 3 minutes and 20 seconds per lap)

2.) Multiply this number by 5, you get 16 minutes and 40 seconds.

NOTE: remember that you’re using intervals of 60 (seconds in a minute) rather than intervals of 100.

8 0
2 years ago
50% of the cake Jenny bike last week we're party cakes 1/5 with fruit cakes and the remainder of sponge cakes what percentage of
Alik [6]
100%-1/5(20%)=80%
80%-50%=30%

7 0
3 years ago
In a café, I order a cup of tea and a piece of cake and it costs £1.10. The next time I order 2 cups of tea and one piece of cak
defon

Answer:

£0.50

Step-by-step explanation:

t = one cup of tea

c = one piece of cake

t + c = £1.10

2t + c = £1.70

the cost increases by £0.60 (£1.70 - £1.10) when you order one more cup of tea which means that one cup of tea costs £0.60

substitute £0.60 into t + c = £1.10

£0.60 + c = £1.10

rearrange to get c = £1.10 - £0.60 = £0.50

so one piece of cake costs £0.50

7 0
3 years ago
Read 2 more answers
Which image below is an acute triangle?
agasfer [191]

Answer:

The answer is Triangle C

Step-by-step explanation:

5 0
1 year ago
PLEASE HELP ASAP
Elena L [17]
36.08 = 8.8t

The distance is a positive because it shows the total distance traveled

36.08 = 8.8t
4.1=t
3 0
3 years ago
Other questions:
  • Alex purchased a 6-hour calling card. He has used t minutes of access time. Write an algebraic expressions to represent how many
    13·2 answers
  • MATH<br><br>ANSWER and I will give you brainiliest ​<br>​
    6·1 answer
  • What are the zeros of the function f(x)=-x^2+13x-36
    11·1 answer
  • Least to greatest 6,5,0,-7,-2
    15·1 answer
  • Which equation represents a line that passes through (2,-1/2<br>and has a slope of 3?​
    8·1 answer
  • Does The TI-Nspire works just like the TI-84 ?
    12·1 answer
  • Someone please help me
    7·2 answers
  • The table below represents a function. Which of the following equations could be its function rule? x y 0 0 1 -3 3 -9 -2 6 y = y
    14·1 answer
  • Patrick will borrow $4300 at 11.5% APR. He will pay it back over 5 years.
    5·2 answers
  • Which equation demonstrates the additive identity property?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!