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
umka21 [38]
3 years ago
14

A ball is thrown straight up with a initial velocity of 56 feet per second . The height , h , of the ball t seconds after it is

thrown is given by the formula h(t)=56t-16t^2 . What is the maximum height of the ball?
Mathematics
1 answer:
Tju [1.3M]3 years ago
3 0

<span>Formula: H(t) = 56t – 16t^2   </span>

H(t) = - 16t^2 + 56t

<span><span>A.      </span>What is the height of the ball after 1 second? H (1) = 56(1) – 16(1) ^2 = 40 pt.</span>

<span><span>B.      </span>What is the maximum height? X = - (56)/2(- 16) = 1.75 sec h (1.75) = 56(1.75) – 16(1.75) ^2 h (1.75) = 49ft.</span>

<span><span>C.      </span><span>After how many seconds will it return to the ground? – 16t^2 + 56t = 0   - 8t =0 t = 0</span></span>

<span><span>-          </span><span>8t (2 + - 7) = 0     2t – 7 = 0  t = 7/2   Ans: 3.5 seconds</span></span>

You might be interested in
given the midpoint of segment KL is M(-1,1) and L id (8,-7). what are the coordinates of the endpoint K
harina [27]

Answer:

Step-by-step explanation:

The answer is (-6, 5) for K.

In order to find this, we must first note that to find a midpoint we need to take the average of the endpoints. To do this we add them together and then divide by 2. So, using that, we can write a formula and solve for each part of the k coordinates. We'll start with just x values.

(Kx + Lx)/2 = Mx

(Kx + 8)/2 = 1

Kx + 8 = 2

Kx = -6

And now we do the same thing for y values

(Ky + Ly)/2 = My

(Ky + -7)/2 = -1

Ky + -7 = -2

Ky = 5

This gives us the final point of (-6, 5)

3 0
3 years ago
Im trying to do IXL and I dont understand the way my teacher teaches (ironic right?)
dlinn [17]
Use the formula slope= y-y/x-x
-10-r/-2-8= 1/10
-10-r/-10= 1/10
Multiply the denominator (-10) on both sides
-10-r= -1
Add -10 to both sides
-r= 9
r= -9
Hope this helps!
4 0
2 years ago
Read 2 more answers
PLEASE HELP I MADE WORTH 20 POINTS I ALSO WILL GIVE A BRAINLIEST TO FIRST CORRECT ANSWER AND ALSO I WILL GIVE A THANKS AND 5 STA
Varvara68 [4.7K]

\bf \blue{ANSWER}

84% of a contractor’s jobs involves electrical work. 75% of a contractor’s jobs involve plumbing work. Of the jobs that involve plumbing, 90% of the jobs also involves electrical work. Let E = jobs involving electrical work L = jobs involving plumbing work Suppose one of the contractor’s jobs is randomly selected. Using the sixth Excel worksheet, a) Find P(E). 0.84 b) Find P(L). 0.75 c) In words, what does E | L mean? d) Find P(E | L). e) Find P(E and L). f) Are E and L independent events? Why or why not? g) Find P(E or L).

6 0
3 years ago
Read 2 more answers
Evaluate the expression 4 1/2 ÷ 3/4
Darya [45]

Answer: 6

Step-by-step explanation:

7 0
2 years ago
I need help with? this question. what is 7(-7)+149-56/2=?
Vlad [161]

Answer:

the answer is 22 hope this helps

Step-by-step explanation:

7(-7)= -49

-49+149=100

100-56=44

44/2=22

3 0
2 years ago
Read 2 more answers
Other questions:
  • Three line segments have measures of 13 units, 7 units, and 5 units. Will he segments form a triangle
    14·1 answer
  • For which of the following inequalities is x greater than or equal to 4 a solution?
    15·1 answer
  • PLEASE HELP ASAP
    7·1 answer
  • What is the distance between the points (5, −2) and (−9, −2)?
    10·2 answers
  • Find the measure of each angle indicated.
    9·2 answers
  • Please help !!!!!!!!!!!!!!! !
    13·1 answer
  • Stephanie thinks of a positive number.
    7·2 answers
  • a fair coin is flipped multiple times until it lands on heads if the probability of landing on heads is 50% what is the probabil
    6·1 answer
  • -4x-4y=24, 3x+10=y
    10·1 answer
  • Explain how the angle-angle-side congruence theorem is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!