Answer:
Step-by-step explanation:
- Initial amount that was received from the garage sale = x
- Spent on bicycle = 1/2x
- Spent on portable stereo set = 1/2(1/2x) = 1/4x
<u>Money left: </u>
- 1/2x - 1/4x = 80
- 1/4x = 80
- x = 4*80
- x = 320
Initial amount was $320
Correct choice is B
Answer:
3.29 s
Step-by-step explanation:
We are given that
Height of building=240
Initial velocity=20ft/s
The height of the ball after t seconds is given by
When the ball strike the ground then
h(t)=0
Quadratic formula:
Using the quadratic formula
Time cannot be negative .Therefore,
t=3.29 s
Answer:
x = 20
Step-by-step explanation:
The two indicated angles are vertical angles and vertical angles are equal
3x+50 = 6x-10
Subtract 3x from each side
3x-3x+50 = 6x-10-3x
50 = 3x-10
Add 10 to each side
50+10 = 3x-10+10
60 = 3x
Divide each side by 3
60/3 = 3x/3
20 =x