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
Gelneren [198K]
2 years ago
11

A tennis ball is launched straight up from a height of 4 feet with an initial velocity of 64 feet per second. Use the

Mathematics
1 answer:
IrinaVladis [17]2 years ago
4 0

When the ball hits the ground,

h=0

vt�16t^2=0

64t-16t^2=0..

t(64-16t)=0

t=0 (reject, not reasonable)

or

64-16t=0

16t=64

t=64/16=4

How long will it take for the ball to hit the ground? 4 seconds

You might be interested in
Only one question .Who knows about this plz "Find the measures indicated. round to the nearest tenth".​
Elan Coil [88]

So the total value of a triangle is 180°

So when u calculate the missing angle its value is 42°

180°-(60°+78°) = 42°

6 0
3 years ago
Read 2 more answers
I need the answer to number 2
gladu [14]
Subtract 10 from both sides :
-3y + 10 - 10 = -14 -10
3y = -24
divide both sides with 3 :
y = -8
8 0
3 years ago
PLEASE HELP I WILL MARK YOU THE BRAINIEST On the same grid paper above, transform your figure ABC using the rule (2x,2y)
xeze [42]

Answer:

move each dot up two lines and right two lines it should transfer the image to the right spot

Step-by-step explanation:

6 0
3 years ago
The width of a rectangle is 6n - 2.5 feet and the length is 2.5 + 8 feet. Find the perimeter of the rectangle.
ludmilkaskok [199]

I was thinking the measurement for ;length should be 2.5n + 8 feet since width is 6n -2.5 feet , but you gave 2.5+ 8 feet, so i will solve it in both ways

Answer:  Perimeter =  5 + 12n + 11 feet ; Perimeter =  17n+ 11 feet

Step-by-step explanation:

Using Length = 2.5+ 8 feet,

Perimeter of  a rectangle is calculated as 2( l+ b)

Given that width=6n - 2.5 feet

length =2.5 + 8 feet

Perimeter =2( l+ b)= 2L + 2B

Perimeter= 2(2.5 + 8feet ) + 2( 6n - 2.5 feet)

Perimeter = 5 + 16feet + 12n - 5feet

Perimeter =  5 + 12n + 11 feet

Using Length = 2.5n+ 8 feet,

Perimeter of  a rectangle is calculated as 2( l+ b)

Given that width=6n - 2.5 feet

length =2.5n+ 8 feet

Perimeter =2( l+ b)= 2L + 2B

Perimeter= 2(2.5n + 8feet ) + 2( 6n - 2.5 feet)

Perimeter = 5n + 16feet + 12n - 5feet

Perimeter =  5n + 12n + 11 feet

Perimeter =  17n+ 11 feet

6 0
3 years ago
7 marbles are in a bag 2 marbles are red and the rest are black how many marbles in bag are black
Nimfa-mama [501]

Answer:

5 marbles are black.

Step-by-step explanation:

7-2=5

7 0
3 years ago
Read 2 more answers
Other questions:
  • M is the midpoint of AB and C is the midpoint of AM . Let the coordinate of A = 7y and the coordinate of B = 3x. Find the coordi
    7·1 answer
  • Not sure if it is hyperbola or hyperbole.
    10·2 answers
  • What is the slope of a line that passes (-4,2) and (6,8)?
    14·1 answer
  • Solve using substitution. x + 2y = 4 and –4x − 7y = –9
    8·2 answers
  • Help me please again
    5·1 answer
  • Fill in each box below with an integer or a reduced fraction.
    10·1 answer
  • Please show your work thanks
    6·1 answer
  • Please help with number 4
    13·1 answer
  • Please answer PLEASE
    8·2 answers
  • 2; 4; 6; 8; ...
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!