Question

4. Amir pitched a baseball at an initial height of 5.9 feet with a velocity of 73.16 feet per second. About how long will it take the ball Amir pitched to hit the ground? (1 point)4.66 secs
2.94 secs
2.35 secs
1.47 secs

5. A golf ball is hit from the ground with an initial velocity of 208 feet per second. Assume the starting height of the ball is 0 feet. How long will it take the golf ball to hit the ground? (1 point)13 secs
21 secs
42 secs
6 secs

6. A particle is moving along a projectile path where the initial height is 160 feet with an initial speed of 144 feet per secon

Answer 1

1.d
2.a
6. A particle is moving along a projectile path where the initial height is 160 feet with an initial speed of 144 feet per second. What is the maximum height of the particle? (1 point)128 feet
224 feet
272 feet
484 feet

Answer 2

I need 4 and 5 checked over and I need help with 6.

Answer 3

224 =P

Answer 4

can you explain why?

Answer 5

no i.....did it in my head...

Answer 6

i need help with one more is that fine?

Answer 7

7. Use complete sentences to explain how you would use graphing technology to find the solutions of 0 = −x2 + 2.5x + 1. What do the solutions of 0 = −x2 + 2.5x + 1 represent on the graph of the equation?

Answer 8

im sorry graphing is what im worst at =[

Answer 9

oh ok animalain?

Answer 10

how about you?

Answer 11

anyone number 7?

Answer 12

I don't see how this works, exactly. For example, a pitched baseball goes approximately horizontal. I don't see any way a ball thrown that way can stay aloft for anything close to the times you have on the answers listed. On the other problems, there is speed information, but no directional information, which is probably needed to find the answers.

Answer 13

Number seven I can handle..... Take the function, and put it into the computer or calculator to graph. Then look for the x values that the curve (parabola in this case) intercepts the x axis. Those numbers are the solutions of your quadratic equation.

Answer 14

and that means?

Answer 15

1) Tell the calculator to draw the graph of y=x^2+2.5x+1
2) Find where the graph of the function intersects the x axis.
3) Those x values are the answers.

Answer 16

i will still need to explain though.

Answer 17

Hello? Finally someone could help with number 7.

Answer 18

I don't understand what more you need to know about number seven.

Answer 19

oh i get it what you wrote above was the answer? im so stupid.

Answer 20

Don't say that. Get it now?

Answer 21

yes. thanks for explaining it.lol

Answer 22

No sweat.