Question

PLEASE HELP<3
:0
<31. What is the value of n so that the expression x^2+12x+n is a perfect square trinomial?

2. What are the solutions of the equation x^2+4x=96?

3. What are the solutions of the equation x^2+14x=-130?

4. A rocket launched from atop a 105-foot cliff with an initial velocity of 156 ft\s. The height of the rocket above the ground at a time t is given by h=-16t^2 +156t+105. When will the rocket hit the ground after it is launched? round to the nearest tenth of a second.

Answer 1

Can u help @rose21

Answer 2

i am sorry i dont know this i am not good in math sorry :P

Answer 3

Its ok:) u kn ow anyone who can?

Answer 4

@kmacdaddy
@stonewoods

Answer 5

@fallonbanks

Answer 6

@osx

Answer 7

@yellowlegoguy99

Answer 8

Plz Anyone:(

Answer 9

For the last one...

h=–16t2+156t+105

hits the ground when h = 0 solve

0=–16t2+156t+105

Answer 10

3rd one...

x^2 + 14x = –130

x^2+14x+130=0
Solution=(-7+-9i)^2

Answer 11

1st term of the trinomial is a perfect square
3rd term of the trinomial is a perfect square
middle term is twice the product of the square root of the 1st and 3rd terms

so the 3rd term (n) is 36

Answer 12

THANKS GUYS:)

Answer 13

Thanks @osx and number 4 is either , 4.9 s, 9.8 s, 0.6 s, 10.4 s

Answer 14

i only have #1 that right... i still need 2, 3,4

Answer 15

10.4s

Answer 16

for #4

Answer 17

thanks :)

Answer 18

-7 + 9i and -7 -9i

number 3

Answer 19

number 2

-12 and 8

Answer 20

for #3 i have the option of 2,-6 10, -13, 2,16 or no solution

Answer 21

and for 2 i have the choice of 2, -48 -12,8 -2,48 12-8

Answer 22

no solution

Answer 23

:)

Answer 24

your awesome

Answer 25

and 2?