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I understand 4-6

## #2 Help Me ! » Functions, Notations » 2017-09-24 03:11:51

Thompsonnn
Replies: 6

questions removed by administrator  see  post 4.

## #3 Re: Help Me ! » Review » 2017-09-14 07:13:53

a would be 4 and b would be 16

## #4 Re: Help Me ! » Review » 2017-09-13 01:27:44

a would be 4x^6 and b would be 16x^2?

## #5 Help Me ! » Difference of squares » 2017-09-11 19:33:43

Thompsonnn
Replies: 1

Factor 4x6 – 16x2 using the difference of squares method. Be sure to factor completely and show your work. If this is not possible for some reason, state why.

## #6 Help Me ! » Review » 2017-09-05 23:29:06

Thompsonnn
Replies: 5

Simplify (5x4 – 3x2 + 7x – 10) – (2x4 – 3x3 + 6x – 17)

Factor 4x6 – 16x2 using the difference of squares method. Be sure to factor completely and show your work. If this is not possible for some reason, state why.

Factor x2 + 9 using any method you choose. Show your work. If this is not possible for some reason, state why

## #7 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-28 19:29:23

do i do number 20 the same?

## #8 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-28 01:24:57

yes it does thank you!

t+8 t-3

## #10 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-24 19:36:37

should i distribute the t?

t^2-11t-24

t^2-8t+3t-24=0?

5t^2-24=0

## #14 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-20 21:33:10

im not to sure how

## #15 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-15 21:47:28

im not sure how to do the last 2.

## #16 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-13 23:19:59

-4.9t2 + 24.5t + 117.6 = 0 this is what i got for 18.

## #17 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-04 01:42:48

The one i have trouble on is 18-20

## #18 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-04 01:41:26

12.Work backwards to write a quadratic equation that will have solutions of x = -1/2 and x =4.

(x+.5)(x-4)=0

2x2-7x-4 =0

## #19 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-04 01:38:49

x-12=0, x-2=0

(x-12)(x-2)=0

x2-2x-14+24 =0
This is for number 11.

## #20 Re: Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-03 03:36:34

x-3=0, x+7=0

(x-3)(x+7)=0

(x-3)(x+7)=x2+4x-21
This is one of my attempts for number 10.

## #21 Help Me ! » Solving Quadratics by Factoring and Graphing » 2017-08-02 00:25:17

Thompsonnn
Replies: 30

10.    Work backwards to write a quadratic equation that will have solutions of x = 3 and x = -7.

11.    Work backwards to write a quadratic equation that will have solutions of x = 12 and x = 2.

12.    Work backwards to write a quadratic equation that will have solutions of x = -1/2 and x = 4.  (Your equation must only have integer coefficients, meaning no fractions or decimals.)

18.   A tennis ball is launched straight upward with an initial velocity of 24.5 m/s from the edge of a cliff that is 117.6 meters above the ground. Which quadratic equation could be used to correctly determine when the ball will hit the ground:

4.9t2 + 24.5t + 117.6 = 0

-4.9t2 - 24.5t + 117.6 = 0

-4.9t2 + 24.5t - 117.6 = 0

4.9t2 + 24.5t - 117.6 = 0

-4.9t2 + 24.5t + 117.6 = 0

19. Solve the equation you chose in question 18 to determine when the ball will hit the ground. (HINT: If you don't get one of the answers listed for this question, then maybe you chose the wrong equation in #18. Use this opportunity to double check your work!)

t = 8 seconds

t = 4 seconds

t = 3 seconds

t = -3 seconds

The ball will never reach the ground.

20. Using the same equation, determine when the ball is at a height of 49 meters.

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