Answer:
x < -1 or x > 9
Step-by-step explanation:
Add 3 to both sides.
Simplify.
Divide both sides by 10.
Simplify.
Apply absolute value rule: If then or
or
Add 4 to both sides.
Simplify.
Add 4 to both sides.
Simplify.
Combine the intervals.
or
Answer:
90 degree is my guess please
Answer: i think it's 75
Step-by-step explanation: because 5 is half of 10 and 10 is half it makes 75
The toy rocket hits the ground when h(t) = 0.
So, h(t) = 0 = -9t^2 + 81.
Solving the equation,
-9t^2 = -81
Dividing by -9
t^2 = 9
Taking the square root.
t = 3
The answer is 3 seconds.