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
tatiyna
3 years ago
7

7. The height of a ball in meters is modeled

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
7 0

Answer:

the ball is in the air for 8 seconds

Step-by-step explanation:

f(x) = y

when y = 0, the ball would've travelled through the air over the final time of flight.

0 = -5x^2 + 40x + 0

use quadratic equation to find the value of x

x = (-b ± √b^2 - 4 • a • c) / 2 • a

x = (-40 ± √40^2 - 4 • -5 • 0) / 2 • -5

x = (-40 ± √1600) / - 10

x = (-40 ± 40) / - 10

x = 0 or x = 8

You might be interested in
Meauring the speed of a car at 60 mph would be an example of quantitative data.<br> True<br> False
Kobotan [32]

Answer:

True

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
John and O’Neill are playing a boardgame in which they roll to number cubes. John needs to get some of a on the number cubes to
Pani-rosa [81]

Answer: John is most likely to win.

Step-by-step explanation: John is most likely to win because he can roll the following numbers:

2,6

3,5

4,4

5,3

6,2

Oh Neil Can only roll these numbers

5,6

6,5

So John would most Likely win

6 0
3 years ago
According to the square root property, the solution set of x 2 = 25 is {±5}.<br> True<br> False
babymother [125]
I believe the correct answer is true. According to the square root property, the solution set of x^2 = 25 is {±5}. <span>The </span>square root property<span> is one method that is used to find the solutions to a quadratic (second degree) equation. This method involves taking the </span>square roots <span>of both sides of the equation. Hope this answers the question.</span>
8 0
3 years ago
Read 2 more answers
Could someone answer this pls thank u
loris [4]

Given:

The area model.

The area of the shape is 82 square units.

To find:

The correct equation for the given situation.

Solution:

We know that, area of a rectangle is

Area=Length \times Width

The figure is divided into 3 rectangles. Using this formula, the area of each rectangle is

A_1=(x)\times (3x)=3x^2

A_2=(x)\times (4)=4x

A_3=(3)\times (3x)=9x

Now, the total area is equation to 82 square units.

A_1+A_2+A_3=82

3x^2+4x+9x=82

3x^2+13x=82

Since the required equation is 3x^2+13x=82, therefore, the correct option is C.

7 0
3 years ago
Extra points <br><br> not in words
Mashcka [7]
Step^1: 6 - 1 - 2(n) + 5 \\ Step^2: 2(n) = 0 \\ Step ^3: \frac{2n}{0} = 0 ; \\ Step^4 \frac{0}{0} = 0 \\ Step^5:Answer : n = 0 \\ Step^6: Number Of Solutions: 1Solution
good\\luck\\on\\your \\ assignment
6 0
3 years ago
Other questions:
  • Javier’s movie collection consists of 3 action movies, 5 comedies, and 9 dramas. In a rush, he randomly grabs 3 movies to bring
    11·2 answers
  • Give the coordinate of a point on the line whose equation in point slope form is y-(3)=1/2(x-4)
    7·1 answer
  • 100 points PLEASE HELP!!!
    10·1 answer
  • Which of the following best describes the equation below? y = 5x + 13
    8·1 answer
  • midpoint between the points (-1, -3) and (5, -3). which one is it 2, 0) B. (-6, 0) C. (6, 0) D. (2, -3) E. (-1, -3)
    6·1 answer
  • Which algebraic expression represents the oference of 54 and a number?<br> 2
    15·1 answer
  • 1. IF the function f(x) = 2(x – 3)2 – 4 is shifted vertically three units up and horizontally
    13·1 answer
  • Help!!! Due today!!!
    6·1 answer
  • NO LINKS PLEASE! help me!
    11·2 answers
  • A geometric sequence is a sequence of numbers where the next term equals to
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!