Hi!
We will solve this using rations, like this:
$920 equals to 115% = 1,15
$x equals to 100% = 1
_______________________
x = (920*1)/1,15
x = 920/1,15
x = 800
Store earned 15%, or in this case 920 - 800 = $120.
Hope this helps!
Answer:
Step-by-step explanation:
C = πd. An equivalent formula is C = 2πr.
Solving the first equation for π, we get π = C/d. Solving the second equation for r, we get π = C / (2r)
Plug in -4 for X and solve
┐( ∵ )┌
I think it's 4x? I'm not up to that level of math yet.
Answer:
The speed is 20.8 m/s
Step-by-step explanation:
If a projectile ascends vertically, and after 3 seconds it reaches its maximum height, calculate the velocity that it carries to the middle of its downward trajectory
Let the maximum height is h and initial velocity is u.
From first equation of motion
v = u + at
0 = u - g x 3
u = 3 g.....(1)
Use third equation of motion

Let the speed at half the height is v'.
