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
Nataly [62]
2 years ago
5

1

Mathematics
1 answer:
cricket20 [7]2 years ago
3 0

Answer:

<em>5.33 secs</em>

Step-by-step explanation:

Given the equation of the height modeled by the equation/

h(t) = -3.2 + 12.5t + 24.8

The object strikes the ground when the height h(t) is zero

Substituting h(t) = 0 into the expression

h(t) = -3.2t² + 12.5t + 24.8

0 =  -3.2t² + 12.5t + 24.8

-3.2t² + 12.5t + 24.8 = 0

Multiply through by minus sign

3.2t² - 12.5t - 24.8 = 0

From the expression a = 3.2, b = -12.5 and c = -24.8

t = -(-12.5)±√(-12.5)²-4(3.2)(-24.8)/2(3.2)

t = 12.5±√156.25+317.44)/6.4

t = 12.5±√473.69/6.42

t = 12.5±21.76/6.42

t = 12.5+21.76/6.42

t = 34.26/6.42

t = 5.33secs

<em>Hence the object strike the ground after 5.33 secs</em>

You might be interested in
An on-demand movie company charges $2.95 per movie plus a monthly fee of $39.95. Which expression represents the yearly
MakcuM [25]

Answer: 2.95x+39.95(12)

Step-by-step explanation:

Hi, to answer this question we have t write an expression with the information given:

The yearly cost for x movie rentals is equal to : the product of the cost of each movie (2.95) and the number of movies (x) ;plus the product of the monthly fee (39.95) and the number of months in a year (12)

Mathematically speaking:

2.95x+39.95(12)

5 0
3 years ago
Read 2 more answers
PLEASE HURRY HELP ME​
ExtremeBDS [4]

Answer:

It IS THE MODE

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Solve. -2 1/4 ÷ (-1 1/2)
Pie

Answer:

=21/22

(Decimal: 0.954545)

hope i helped -lvr

5 0
3 years ago
syeda has finished 20% of her math assignment. The assignment includes 50 problems how many problems has syeda completed?
Nostrana [21]

Answer:

10 problems

Step-by-step explanation:

This is the answer because:

1) We have to solve for what 20% of 50 is since she finished 20% of her test:

20% of 50 = 10

\frac{2}{10} × \frac{50}{1} = \frac{100}{10} = 10

Therefore, the answer is 10 problems.

Hope this helps! :D

5 0
3 years ago
$29.15 deducted from $265 what percent deducted
lions [1.4K]
Divide 29.15/265 = 0.11 or 11 percent
5 0
2 years ago
Other questions:
  • 19. Given that the lines are parallel, what angle is congruent to angle 6?
    5·2 answers
  • Help me on these and please explain ASAP
    15·1 answer
  • Which data set is represented by the modified box plot?
    14·1 answer
  • Ethan decides to type up some documents while waiting for the meeting to start he can type two pages every 1/8 hour if the meeti
    10·1 answer
  • Please help me asap!
    6·1 answer
  • A House needs to some maintenance one sink is dripping water every 10 minutes and the other sink is dripping every 12 minutes if
    15·1 answer
  • In the diagram below, the area of $\triangle BCD$ is 60. What is the length of side $\overline{BC}$?
    15·1 answer
  • Pls help with the right answer pls thx :D. Find m
    6·1 answer
  • Please help me in this! Really in need.
    11·1 answer
  • A cone has a volume of 37.68cm3. If the height of the cone is 9cm what is the radius of the cone's
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!