Here mine. I did this for my AP art
{ 3 x - 2 y = 30 * ( 2 )
2 x + 3y = - 19 * ( -3 )
↓
6 x - 4 y = 60
- 6x - 9 y = 57
______________
-13 y = 117
y = 117 / - 13
y = - 9
For x :
3 x - 2y = 30
3 x - 2 ( -9) = 30
3 x + 18 = 30
3 x = 30 - 18
3 x = 12
x = 12 / 3
x = 4
x = 4 and y = -9
hope this helps!
Answer:
0.97 cents
Step-by-step explanation:
4/3.88=0.97
price per pound=0.97 cents
BRAINLIEST APPRECIATED!
HOPE YOU ARE HAVING A GOOD DAY!
Answer:
It should be t = 1.5 seconds if your equation is h(t) = -16*t^2 + 8t + 24
Step-by-step explanation:
h(t) = -16*t^2 + 8t + 24
We want to solve for t when h(t) = 0.
This is a parabolic equation so basically we can use the quadratic formula to solve this.
h(t) = -16*t^2 + 8t + 24
0 = h(t) = -16*t^2 + 8t + 24
take out the 8
0 = -2t^2 + t + 3
0 = -2t*t - 2t + 3t + 3
0 = -2t * (t + 1) + 3*( t + 1)
0 = (-2t + 3) * ( t + 1)
so time cannot be negative, so we choose 0 = (-2t + 3), t = 3/2 seconds
or t = 1.5 seconds
