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
kotegsom [21]
3 years ago
10

An object is launched from the ground. The object’s height, in feet, can be described by the quadratic function h(t) = 80t – 16t

2, where t is the time, in seconds, since the object was launched. When will the object hit the ground after it is launched? Explain how you found your answer.
Mathematics
2 answers:
MrRissso [65]3 years ago
8 0
Set h(t), time = 0.
0 = 80t-16t^2
-16t^2+80t =0

Factor
-16t(t-5) =0

t =0 (when launched)
& t = 5


Radda [10]3 years ago
7 0

Sample Response: The object will hit the ground after 5 seconds. You can rewrite the quadratic function as a quadratic equation set equal to zero to find the zeros of the function 0 = –16t2 + 80t + 0. You can factor or use the quadratic formula to get t = 0 and t = 5. Therefore, it is on the ground at t = 0 (time of launch) and then hits the ground at t = 5 seconds

What did you include in your response? Check all that apply.

I Rewrite the quadratic function as a quadratic equation set equal to zero: 0 = –16t2 + 80t + 0.

Use the quadratic formula to solve for the zeros.

Factor to solve for the zeros.

t = 0 and t = 5 seconds.

The object will hit the ground after 5 seconds.

You might be interested in
The percentage method of withholding for federal income tax​ (2003) states that a single person whose weekly​ wages, after subtr
goblinko [34]

The range that the amount withheld vary if the weekly​ wages, after subtracting withholding​ allowances, vary from $600 to $700 ​inclusive is: 76.35<x<101.35.

<h3>Range</h3>

Given

592<x1317

74.35+.25

Hence:

Lowest range

74.35+.25(600-592)

74.35+.25(8)

74.35+2

=76.35

Highest range

74.35+.25(700-592)

74.35+.25(108)

74.35+27

=101.35

Range

76.35<x<101.35

Therefore the range that the amount withheld vary if the weekly​ wages, after subtracting withholding​ allowances, vary from $600 to $700 ​inclusive is: 76.35<x<101.35.

Learn more about range here: brainly.com/question/2264373

#SPJ1

7 0
1 year ago
Look At picture! Below!
eimsori [14]

Answer:

The answer is: the second one

Step-by-step explanation:

                                             (2x + 2)/y = 4w + 2

pass y to the right side        2x + 2 = y(4w + 2)

expand                                   2x +2 = 4wy + 2y

pass 2 to the right                2x = 4wy + 2y -2

pass 2 to the right                x = (4wy + 2y - 2)/2

simplify                                  x = 2wy + y - 1 or = 2yw + y -1

8 0
3 years ago
At a boutique, a pair of flats cost the store $40 and is marked up 30% based on selling price. What is the selling price?
kicyunya [14]
40 x 30 percent = $52
6 0
3 years ago
Can someone help me with question 6 please
SIZIF [17.4K]
A) 4a+3w
b) 2b+h
c) 3(w+h)
d) (4a+3w)(2b+h) - 3(w+h)
just expand brackets for d and simplify
6 0
2 years ago
Read 2 more answers
I need to increase my sales by 35% this month I’m currently at 45 sales how many sales do I need to meet my goal ?
telo118 [61]
Assume that 100% = 45 sales and 35% = X sales amount

You can create a ratio to help you solve for x

45 = 100%
x   =  35 %

Which is equal to this fraction:  (45/x) = (100/35)

Solving for X by cross multiplying and dividing by 100:
  [(45)(35)] / 100  =  X = 15.75 = 16 sales (rounded up)

You would need at least 16 sales to increase sales total by 35%
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the distance between points (7,8) and (-8,0) on coordinate grid ?
    14·2 answers
  • Use the formula A = Ibh find the height to the nearest tenth of a triangle with a base of 15 and an area of 200.​
    13·1 answer
  • Will someone help me I don't understand
    8·1 answer
  • About how many times larger is 6.14 x 10-3 than 1.98 x 10-4?
    10·2 answers
  • Describe a pattern in the sequence of numbers. Predict the next number.
    13·1 answer
  • What is 17÷7?<br> Can it be done?
    12·1 answer
  • What is the product of (-7)(-4)?
    7·1 answer
  • 12) 3(61 - 1) &gt; 18 - 36​
    9·1 answer
  • In an arithmetic sequence, u1 = 1.3 , u2 = 1.4 and uk = 31.2.<br> 7a. Find the exact value of Sk
    15·1 answer
  • 7th grade math help me please :)))
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!