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
Sveta_85 [38]
3 years ago
12

a football is fired upward with an initial speed of 800 feet per second. It is given that h=-12t^2+360t (h is the height of the

football at any given time).what will you set h equal to in the equation to to find how many seconds it takes the football to hit the ground?
Mathematics
1 answer:
tangare [24]3 years ago
6 0

Answer:

30 s

Step-by-step explanation:

When the ball hits the ground h=0. To find the time t when this happens we must solve the equation h=0.

●h= 0

● -12t^2+360t =0

● t(-12t +360) = 0

● t = 0 or -12t +360 =0

● t=0 or -12t = -360

● t=0 or 12t =360

● t=0 or t=360/12

● t=0 or t= 30

The equation has two solutions.

The ball was fired with an initial speed of 800 feet per second so it cannot hit the ground at t=0.

So the ball hits the ground after 30 s.

You might be interested in
What time is it 120 minutes after midday?​
coldgirl [10]
Midday is 12pm so you add whatever hours to that. Which is 1:20pm after midday (12pm)
7 0
3 years ago
Mrs. Nestler enjoys listening to classical music. She has the following audio CDs by her favorite composers in her collection: 4
ivolga24 [154]

Answer:

10.55% probability

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the CDs are chosen is not important. So we use the combinations formula to solve this question.

1 Bach CD, from a set of 4.

1 Beethoven CD, from a set of 6.

1 Brahms CD, from a set of 3.

1 Handel CD, from a set of 2.

So, D=144

4 CDs from a set of 4+6+3+2 = 15.

So, T= 1365

p= D/T= 144/1365 = 0.1055

10.55% probability that she will choose one by each composer

4 0
3 years ago
15w2+62w+63=0 <br><br><br> Can you help me
anzhelika [568]

Answer:

w=-7/3 and w=-9/5

Step-by-step explanation:

Given: 15w^2+62w+63=0

Factor: (3w+7)(5w+9)=0

Zero Product Property: 3w+7=0 and 5w+9=0

Solve each equation: w=-7/3 and w=-9/5

Let me know if you would like me to explain more.

7 0
2 years ago
Simplify the following expression: 2x − 6y + 3x2 + 7y − 14x. 3x2 + 12x + y 3x2 − 12x − y 3x2 − 12x + y 3x2 − 12x − 13y
zheka24 [161]
-6x-13y 
2x+(3x2)-14x+(3x2)+12x+(3x2)-12x+(3x2)-12x+(3x2)-12x
2x+6x-14x+6x+12x+6x-12x+6x-12x+6x-12x=-6
-6y+7y+1y-1y+1y-13y=-13y
if a letter is by itself then there is automatically a one in front of it
8 0
3 years ago
Read 2 more answers
Which algebraic representation shows a reduction?
Grace [21]

Answer:

D. (x, y) →(\frac{1}{2}x,\frac{1}{2}y)

Step-by-step explanation:

A dilation is a transformation which reproduces an image of the same shape as the original, but might be of a different size.

When the dilation produces a smaller image is called a reduction.

Mathematically, a reduction occurs whenever the scale factor is between 0 and 1.

Out of the options, the only one that has a scale factor less than one is:

(x, y) →(\frac{1}{2}x,\frac{1}{2}y)

Since the scale factor is 1/2 which is less than 1.

All other options are not reductions.

5 0
3 years ago
Other questions:
  • Help pleasee thank you so much in advance
    12·2 answers
  • PLEASE HELP ME FAST BRAINLIEST TO FIRST PERSON TO ANSWER CORRECTLY WITH EXPLONATION!!
    12·2 answers
  • If f(x) =x2 +8 what is f(x) when x = 10
    15·1 answer
  • the puppy will grow to be one 28 inches and hes grown 1 foot tall how many more inches those the puppy grow
    7·1 answer
  • Write an equation of the line with the given characteristics: slope =1/3 ; passes through (6, 1).
    11·1 answer
  • Which statement is rewritten as a conditional statement for the sentence below?
    14·2 answers
  • Help me pleasee;) ..
    7·1 answer
  • 4. Identify the domain and range of the relation<br><br> {(2,4),(7,-9),(1,4),(3, -6), (8,0)}
    10·1 answer
  • SOMEONE PLEASE HELP ASAP, THANK YOU SO MUCH
    10·1 answer
  • What is the sum of 27.536, 4.251 and 4.06082<br><br> PLEASE I NEED IT RIGHT NOW
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!