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
a_sh-v [17]
1 year ago
5

A ball is launched into the sky at 54. 4 ft./s from a 268.8 m tall building. The equation for the ball’s height, h, at time t se

cond’s is h= -3.2t^2 + 54.4t+ 268.8. When will the ball strike the ground?
Mathematics
1 answer:
Crank1 year ago
6 0

Answer:

t = 21

Step-by-step explanation:

The ball strikes the groujd when h = 0.

-3.2t^2 + 54.4t+268.8=0 \\ \\ 32t^2 - 544t-2688=0 \\ \\ t^2 - 17t-84=0 \\ \\ (t-21)(t+4)=0 \\ \\ t=-4, 21

Since time must be positive, t = 21.

You might be interested in
What is 0.45 as a fraction how do I show my work
g100num [7]
45/100 = 9/20

Work: divide by 5
7 0
3 years ago
Read 2 more answers
What is 3/4 of 3/9?
Artyom0805 [142]
3/4 = .75    so you have to find 75 % of 3/9
100% = 3/9
1% = (3/9)/100
75% = (3/9)/100 * 75 =.25
8 0
3 years ago
Which statements are true about the place values in the number 88.888?
KIM [24]
I believe A and B are the ones. As for explaining? hmm. I would honestly say that any number to the right of a number is a tenth of the place above it. But then again, it's optional to explain ;P
3 0
2 years ago
Read 2 more answers
Dodi has 2 cups of liquid starch and will use the entire amount. She plans to store the slime in containers that each hold a max
elena55 [62]

Answer:

dodi is a ped0

Step-by-step explanation:

5 0
2 years ago
Pls help me!!!!!! Its due tomorrow
prisoha [69]
Pls help its due tomorrow

3 0
3 years ago
Other questions:
  • Find the distance between the pair of points. (-16, 12) and (-22, -19).
    12·1 answer
  • Point D ( −1, 5 ) is reflected across the X-Axis.
    12·2 answers
  • What is 0.135 as a repeating decimal to a fraction?
    15·1 answer
  • P( x) =x^3-6x^2-5x-14 What is the remainder R when the polynomial p(x) is divided by (x-7)
    6·1 answer
  • Hiwndobi slove this?
    5·1 answer
  • 10. Paul can run 2 miles in 30 minutes. At this rate, how many miles can he run<br> in 150 minutes?
    13·1 answer
  • Find (a) PQ to the nearest tenth and (b) the coordinates of the midpoint of PQ.
    9·1 answer
  • Help<br> ===================
    5·1 answer
  • What’s 70x56,000+65,000,000
    8·1 answer
  • A cuboid measures X cm by 3X cm by 5X cm. Calculate the volume of the cuboid in terms of X.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!