Answer:
Step-by-step explanation:
The 
-intercept of a line is the value when 
. In the equation 
, we can solve for its equation when we plug in .
Solving for when :
.
So the -intercept of the equation is 
.
To find what equation has the same -intercept, we can do the same process for each equations given by the choices. However, I can see that the equation, , has the -intercept. If in doubt, you can check for the solution below or solve each equations for yourself.
Solving for when :
Answer:
Step-by-step explanation:
5x + 3 = 2x - 6
3x + 3 = -6
3x = -9
x = -3
Answer:
- Josh's book lands first
- Ben's lands about 0.648 seconds later
Step-by-step explanation:
Using the given equation for v=60 and s=40, the height of Ben's book is ...
h(t) = -16t² +60t +40
We want to find t when h(t) = 0, so we're looking for the solution to ....
0 = -16t² +60t +40
Using the quadratic formula, we find the positive value of t to be ...
t = (-60 -√(60² -4(-16)(40)))/(2(-16)) = (15 +√385)/8 ≈ 4.3277
__
Similarly, the height of Josh's book is ...
0 = -16t² +48t +40
t = (-48 -√(48² -4(-16)(40)))/(2(-16)) = (12 +√304)/8 ≈ 3.6794
__
The time before Josh's book lands is shorter by ...
4.3277 -3.6794 ≈ 0.6482 . . . . . seconds
Josh's book reaches the ground first, by about 0.648 seconds.
Answer:
1. x/5
2. cubed root of 2x
3.x-10
4.(2x/3)-17
Step-by-step explanation:
4 times 1 = 4 so the top one would be 4/12, but i can't help with the rest because i don't understand what they are asking for
