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
amid [387]
3 years ago
13

Need help will give 5 stars.

Mathematics
2 answers:
olga_2 [115]3 years ago
7 0

Answer:

t=0.64

Step-by-step explanation:

h = -16t^2 +4t +4

We want h =0 since it is hitting the ground

0 = -16t^2 +4t +4

Using the quadratic formula

a = -16  b = 4  c=4

-b ± sqrt( b^2 -4ac)

----------------------------

         2a

-4 ± sqrt( 4^2 -4(-16)4)

----------------------------

         2(-16)

-4 ± sqrt( 16+ 256)

----------------------------

         -32

-4 ± sqrt( 272)

----------------------------

         -32

-4 ± sqrt( 16*17)

----------------------------

         -32

-4 ± sqrt( 16) sqrt(17)

----------------------------

         -32

-4 ± 4 sqrt(17)

----------------------------

         -32

Divide by -4

1 ±  sqrt(17)

----------------------------

         8

To the nearest hundredth

t=-0.39

t=0.64

Since time cannot be negative

t=0.64

ICE Princess25 [194]3 years ago
5 0

Answer:

0.64  

Step-by-step explanation:

0 = -16t^2 + 4t + 4

-4(4t^2 - t -1) = 0

t = [-(-1) +/- sqrt (1 - 4*4*-1)] / 8)

t = 0.64, -0.39

answer is 0.64

You might be interested in
What percentage of students under age 15 travel to school by car? Round to the nearest whole percent. 11% 18% 41% 80%
bixtya [17]

Answer:

11%

Step-by-step explanation:

We need to fill the missing cells of the table first and are interested in first row for under age 15

1. 152- 65= 87 for the top left cell

2. 165- (87+60)= 18 for car column on same row

now we have number 18 and the total of the first row is 165:

  • 18/165*100%= 10.9%

So the first choice- 11% is the answer

3 0
3 years ago
The half-life of a drug is 4 hours. A patient has been taking the drug on a regular basis for a few months and then discontinues
brilliants [131]

Answer:

Step-by-step explanation:

7 0
3 years ago
What is the value of x?
statuscvo [17]

x = 16.

Hope this helps!

4 0
2 years ago
Read 2 more answers
A cook has 6 and 1/2 cup of sliced carrots how many 3/4 cup servings of carrots is this
aalyn [17]

Answer:

8 and 2/3

Step-by-step explanation:

Divide 6.5 by 0.75 and you get 26/3, or 8 and 2/3

5 0
2 years ago
Help plsssss can someone also explain the diagram ​
lyudmila [28]
The answer is C.

Explanation: There are 3 x variables and on the other side you see 11.

So the answer is 3x = 11
8 0
3 years ago
Other questions:
  • Carter drawers one side of equilateral triangle pqr on the coordinate plane at points P(-3, 2) and Q(5, 2). Which ordered pair i
    8·1 answer
  • How did you find it and what is the anwser
    5·1 answer
  • Find the area of the shaded region
    10·1 answer
  • Find the value of x and the value of y.
    15·1 answer
  • Whoever answers first ill give Brainliest
    13·1 answer
  • Which is equivalent to the expression (2m^5n^4)^3?
    14·1 answer
  • What’s the radio is of the circle
    12·1 answer
  • What is the value of x? ​
    9·1 answer
  • A hungry Emperor penguin was swimming 21 feet below sea level. It swam up 9 feet to eat a fish. What is the position of the peng
    12·2 answers
  • Please help me on this math
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!