Answer:
The correct option is b: 6 seconds.
Step-by-step explanation:
The formula is:
Where:
t: is the time
h: is the height = 384 ft
When the stone hit the ground, h = 0
To solve the above quadratic equation we need to use the following formula:
(1)
Where:
a: is the coefficient of t² = -16
b: is the coefficient of t = 32
c: is the independent term = 384
By entering the above values into equation (1) we have:
Since we can not take the negative value of time (t₂) equal to -4, the answer is 6 seconds.
Therefore, the stone will hit the ground in 6 seconds. The correct option is b: 6 seconds.
I hope it helps you!
Answer:
-1
Step-by-step explanation:
Triangle angles always add up to 180 degrees.
So what you’ll need to do is add up all the angles and set them equal to 180. And then solve for x
4x+3x+2x=180 | Add up all values
9x=180 | Divide 180 by 9
x=20 | There’s your answer
Answer:
She wanted to know how long it took her to complete one set of 30 jumping jacks on average, and the results were 28 seconds and 30 seconds. 33 seconds are up 3 minutes 35 seconds
Step-by-step explanation: