If the object hit the ground, then this mean that the height is 0, right?
so solve for it like this:
0= -16t^2+144
-144 = -16t^2
Divide by (-16)
9= t^2
square root both sides
t= 3 or -3
there is no negative time then the object will hit the ground after 3 secs
Hello from MrBillDoesMath!
Answer:
Cchoice B is the correct answer.
Discussion:
As stated by an earlier respondent, choice B is the correct answer. But why?
From the diagram, point B lies between 0 and 1 which means B is positive
From the diagram, point C lies between -1 and -2 which means C is negative
The quotient of a negative number by a positive number is negative, giving the answer as choice c
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!
9x-9y=-9
x-y=-9/9
x-y+1=0.......(1)
4x-3y=-8
4x-3y+8=0....(2)
combining equation we get
(x-y+1)(4x-3y+8)=0
x(4x-3y+8)-y(4x-3y+8)+4x-3y+8=0
4x²-3xy+8x-4xy+3y²-8y+4x-3y+8=0
<u>4x²+3y²-7xy+12x-11y+8=0</u><u> </u><u>is</u><u> </u><u>your</u><u> </u><u>equation</u><u>.</u>
Answer:
1/5
Step-by-step explanation:
y = kx where k is the constant of proportionality
6 = k 30
Divide each side by 30
6/30 = k 30/30
1/5 = k
The constant is 1/5
