Answer:
The inverse of the function is ±sqrt( (x+4)/2
Step-by-step explanation:
Set the function equal to y
y = 2x^2 -4
Exchange x and y
x = 2y^2 -4
Solve for y
Add 4 to each side
x+4 = 2y^2 -4+4
x+4 = 2y^2
Divide each side by 2
(x+4)/2 = 2/2y^2
(x+4)/2 = y^2
Take the square root of each side
±sqrt( (x+4)/2 )= sqrt(y^2)
±sqrt( (x+4)/2 )= y
The inverse of the function is ±sqrt( (x+4)/2
Hello,
The correct order is:
-16.5, -√270, -50/30, 16 3/10
Faith xoxo
Answer:
3.15 seconds is the answer.
<u>Explanation</u>
when the ball touches the ground, h =0
hence,
0=255-21t-16t²
16t²+21t-225=0
here a=16 ,b=21, c= -225
time cannot be negative, hence t = -4.46 can be avoided
The ball takes 3.15 seconds to hit the ground.
A. The probability that you would select a black marble is 10/100. Which is also 1/10.
B. It would be 10/60. Which is 1/6.
For the first you count how many black marbles are in the jar total? There is 10. Which means 10/100.
For the second the red marbles doesn’t count so now we have only 60 marbles in the jar. 10 of those marbles are still black.
Please vote my answer brainliest! Thanks.
