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
Kazeer [188]
3 years ago
14

Answer please lot's of points.

Mathematics
2 answers:
Svetlanka [38]3 years ago
3 0

Answer:

t≈8.0927

Step-by-step explanation:

h(t) = -16t^2 + 128t +12

We want to find when h(t) is zero ( or when it hits the ground)

0 =  -16t^2 + 128t +12

Completing the square

Subtract 12 from each side

-12  =  -16t^2 + 128t

Divide each side by -16

-12/-16  =  -16/-16t^2 + 128/-16t

3/4 = t^2 -8t

Take the coefficient of t and divide it by 8

-8/2 = -4

Then square it

(-4) ^2 = 16

Add 16 to each side

16+3/4 = t^2 -8t+16

64/4 + 3/4= (t-4)^2

67/4 = (t-4)^2

Take the square root of each side

±sqrt(67/4) =sqrt( (t-4)^2)

±1/2sqrt(67) = (t-4)

Add 4 to each side

4 ±1/2sqrt(67) = t

The approximate values for t are

t≈-0.092676

t≈8.0927

The first is before the rocket is launched so the only valid answer is the second one

prisoha [69]3 years ago
3 0

Answer:

your correct answer is t

Step-by-step explanation:

You might be interested in
Linda needs 20 gallons of juice that has 75%fruit juice. she has a mixture that has 80% fruit juice and another mixtures that ha
suter [353]
Linda should use ...
  15 gallons of 80% juice
  5 gallons of 60% juice

_____
Let g represent the number of gallons of 80% juice needed. Then (20-g) is the number of gallons of 60% juice Linda will use. The amount of juice in the mixture can be written as
  0.80g +0.60(20 -g) = 0.75×20
  0.20g = 20(0.75 -0.60) = 20×0.15
  g = 20×0.15/0.20 = 15
The amount of 80% juice needed is 15 gallons, so 5 gallons of 60% juice are needed.
5 0
3 years ago
PLEASE PLEASE OLEASE HELP ME ASAP I WILL LOVE U FOREVER
vodomira [7]

Answer:

m=3/2

look how many units go up and to the side between 2 points

As seen here, we go up 3 units and over 2 units from (0, -3) to (2, 0.) Therefore, slope is 3/2

Step-by-step explanation:

8 0
3 years ago
What is the ratio of 36 and 20
bixtya [17]
36/20
36:20
36 to 20
hope this helps
5 0
3 years ago
Read 2 more answers
A park has a length to width ratio of 7:4 and the perimeter of the park is 880 meters. What are the length and width of the park
Schach [20]

Step-by-step explanation:

Ratio of length to width = 7 : 4

length = 7x

width = 4x

7x + 4x = 11x

length = 880

880 + 4x = 11x

880 = 11x - 4x

880 = 7x

\frac{880}{7}  = x

125.71 = x

width = 4x

= 4(125.71)

= 502.85

3 0
2 years ago
PLEASE PLEASE HELP
noname [10]

Answer:

8.51x10^{-3}cm

Step-by-step explanation:

In order to add or subtract numbers in scientific notation, the powers of ten must have the same exponent.  In this caes the diameter of an average human body cell is a power of -4 and the diameter of a plant cell is a power of -3.  In order to add them, we can move the decimal over for the body cell diameter:

5.1x10^{-4}=0.51x10^{-3}

Add the two values: 0.51x10^{-3}+8x10^{-3}=8.51x10^{-3}cm

7 0
3 years ago
Read 2 more answers
Other questions:
  • I. Do not get it plz help
    14·1 answer
  • Which type of unemployment is characterized by a worker looking for a job
    10·2 answers
  • Classify the expression below.
    11·1 answer
  • What’s the value of x
    5·2 answers
  • What is 3x = 99 - 35x + 12 - 10 / 6
    14·1 answer
  • Please help me anyone
    14·1 answer
  • ILL MARK YOU BRAINLEST IF YOU AWNSER PLEASE!! look at the photo and what is the measure of BMC?help me please!!
    9·1 answer
  • Lance rides his bike at a constant speed of 32 mph. Write an equation to represent the total distance, d, he can ride in h hours
    13·1 answer
  • A box of cereal contains 15 3/5 ounces of cereal. If a bowl holds 2 2/5 ounces of cereal, how many bowls of cereal are in one bo
    13·1 answer
  • Which erosional force acts alone to produce avalanches and landslides?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!