Question

Can someone help me with an assigment???

Answer 1

Pleaseeeeeeeeeeeeeee

Answer 2

gotta post it first.

Answer 3

It's long doe

Answer 4

go ahead.

Answer 5

so then how we can help if you will not post

Answer 6

Choreographed Fountains Activity: Independent Work

Imagine you are a fountain designer and you need to know how different speed motors will affect the water’s projected height and time in the air. You have various motor speed options but need to choose the one that most closely meets the client’s height request of 690 feet. Your job is to determine which motor speed is the best choice. In all cases, you will use the projectile formula
y = –16x2 + vx + s, with starting height of 0 (s = 0).

Motor A speed Motor B speed Motor C speed
190 ft per second 210 ft per second 230 ft per second

Substitute the data provided for speed (v) and starting heights (s) into their proper positions in the formula
y = –16x2 + vx + s and write the equation corresponding with each motor in the space provided below.
Then identify the a, b, and c values for each where indicated. (6 points total, 2 points each)
The equation for motor A is:
a =
b =
c =

The equation for motor B is:
a =
b =
c =

The equation for motor C is:
a =
b =
c =

Use graphing technology to graph the equation for each motor. Set rounding to 5 places. Save a copy of each graph and paste them here or attach them to the assignment. If you are using GeoGebra, follow these instructions to find the vertex and x-intercepts. (15 points total, 5 points each graph)

Look at each motor's graph and find the vertex coordinates. Then report them below. (12 points total, 4 points each)
Motor A Vertex coordinates:

Motor B Vertex coordinates:

Motor C Vertex coordinates:

What is the range in height from the tallest fountain to the shortest fountain? Round to the nearest foot. (3 points)

What is the relationship between speed and height in the three graphs? (3 points)

Recall that your client has made a height request of 690 feet. Which motor brings you closest to that request? (1 point)

Ο Motor A Ο Motor B Ο Motor C

Now, in order to synchronize the neighboring fountain head to begin as soon as this one returns to the ground, you need to determine the time the water from this motor is in the air. (4 points)
Using your graphing tool, find the x-intercepts for the chosen motor.

Save a copy of this motor’s final graph and paste it here or attach it to the assignment.
How many seconds does it take for the water from this motor to return to the ground? (2 points)

When looking for the maximum height of the fountain, which part of the graph do you need to locate? (2 points)

When looking for the time the water is in the air, which part of the graph are you using? (2 points)

Answer 7

@primeralph

Answer 8

what part don't you get?

Answer 9

All of it... @primeralph

Answer 10

need a graphing calculator or sth. For a,b,c replace v with 190, 210 etc and s with 0. Then graph.

Answer 11

Like the first part i know but how do i graph them after?

Answer 12

hey, you said 'all of it'!!!
Do you have a graphing calculator?

Answer 13

Nopeeeee

Answer 14

Like i already answeered all of number 1

Answer 15

use mathematica?

Answer 16

thing is, your questions ain't numbered, so I don't know what number 1 is.

Answer 17

1. Substitute the data provided for speed (v) and starting heights (s) into their proper positions in the formula
y = –16x2 + vx + s and write the equation corresponding with each motor in the space provided below.
Then identify the a, b, and c values for each where indicated. (6 points total, 2 points each)
The equation for motor A is:
a =
b =
c =

The equation for motor B is:
a =
b =
c =

The equation for motor C is:
a =
b =
c =

Answer 18

That's number 1

Answer 19

Use graphing technology to graph the equation for each motor. Set rounding to 5 places. Save a copy of each graph and paste them here or attach them to the assignment. If you are using GeoGebra, follow these instructions to find the vertex and x-intercepts. (15 points total, 5 points each graph)

Answer 20

This is number 2. How do i answer that?

Answer 21

@primeralph

Answer 22

use the equations you got for A,B,C from number 1 and graph them using a graphing calculator

Answer 23

http://www.wolframalpha.com/

Answer 24

But theres like 2 ways i could do this like the original equation is y=-16x+190x+0 and after factoring the equation (i think thats how you say it) i get y+16x-190x+0

Answer 25

@primeralph So which equation to i put into the calculator??

Answer 26

y = blah blah. Have you ever graphed before?

Answer 27

No?

Answer 28

okay. What type of calculator are you using?

Answer 29

I don't use any kind of calculator.. i have a generic one but i don't think it does anything.