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
AlekseyPX
3 years ago
14

Sharon kicks a ball from the ground into the air with an upward velocity of 64 feet per second. The function h = -16t2 + 64t mod

els the height h, in feet, of the ball at time t, in seconds. When will the ball reach the ground again?
A: 1 second after the ball is thrown

B: 2 seconds after the ball is thrown

C: 3 seconds after the ball is thrown

D: 4 seconds after the ball is thrown
Mathematics
2 answers:
iren2701 [21]3 years ago
7 0
When the ball reaches the ground is equal to one of the zeros, or x-intercepts. In order to find the zeros of a function, you need to factor the equation.
y=16x^2+64x
y=-16x(x-4)
The zeros are x=0 and x=4
Therefore the answer is D, after 4 seconds.
Hope this helps!
avanturin [10]3 years ago
3 0
The answer would be 4 seconds
You might be interested in
How do I find the volume of L-Blocks?
KIM [24]
You have to multiply to find it 
6 0
2 years ago
Read 2 more answers
Solve the equation of exponential decay. The population of a city is expected to be 440,000 in 2020. This is a decline of 12% fr
DIA [1.3K]

Answer:

about 340,000

Step-by-step explanation:

In 10 years, the population dropped to 0.88 of what it was in 2010. At the same rate, in 20 more years, it will drop to 0.88² of what it was in 2020:

2040 population = 440,000·0.88² ≈ 340,000

5 0
3 years ago
Read 2 more answers
I really need help<br> Solve for x
MakcuM [25]

\huge\underline{\overline{\mid{\bold{\red{ANSWER}}\mid}}}

1. Both are corresponding angles, hence they both are equal, so,

44x + 2 = 45x \\  =  > 2 = 45x - 44x \\  =  > 2 = x \\  =  > x = 2

Ans. C) 2

2. They both are in interior corressponding, hence their sum is equal to 180°, so,

10x + 6 + 104 = 180 \\  =  > 10x + 110 = 180 \\  =  > 10x = 180 - 110 \\  =  > 10x = 70 \\  =  > x =  \frac{70}{10}  \\  =  > x = 7

Ans. D) 7

3. They both are in interior corressponding, hence their sum is equal to 180°, so,

x + 75 + x + 125 = 180 \\  =  > 2x + 200 = 180 \\  =  > 2x = 180 - 200 \\  =  > 2 x =  - 20 \\  =  > x =  \frac{ - 20}{2}  \\  =  >  x =  - 10

Ans. A) -10

4. Both are corresponding angles, hence they both are equal, so,

12x + 3 = 11x + 9 \\  =  > 12x - 11x = 9 - 3 \\  =  > x = 6

Ans. A) 6

If it helps you, please don't forget to follow me.

✌✌✌

6 0
3 years ago
HELP!! 70 points will be given!<br> Picture included
kkurt [141]

Answer: a) -13/16

Step-by-step explanation: Start by setting equations equal and rearrange X^3 - x^2 + 1 = 0. Visual inspection of graph shows x between -1 and -1/2. Start with x = 3/4 plug in and calculate: just a little too small. Try going halfway towards -1: x =-7/8 Plug in and the answer is very far from 0. Go halfway back towards -3/4: -13/16 and the equality is very close.

8 0
3 years ago
What is 2gh−(3+7)+ 4 x ​
Leno4ka [110]

Answer:

answer -10

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • A ___ expense is a cost that may happen each month, but one who's total amount may change from month to month. A) fixed B) varia
    14·2 answers
  • Write (-3, -5) (-1, -19) in point slope form
    5·1 answer
  • Find the sum of -1676 + (-1669) + (-1662) +...+(-115) + (-108).
    8·1 answer
  • I need help with this word problem:
    11·1 answer
  • Carrie saved money to spend while on a one-month vacation to Europe. On day 8, she had $2,400 remaining. On day 16, she had $1,6
    10·2 answers
  • ABDE is an isosceles trapezoid. Select all
    15·1 answer
  • Find the slope please :)
    5·1 answer
  • Which one of these statements is correct????
    12·1 answer
  • For a food truck event, you sold 750 chicken tacos and 520 beef tacos.
    12·2 answers
  • 7.5 Cheetah Speed and reasoning
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!