Answer:
x = 59°
Step-by-step explanation:
When the two lines being crossed are Parallel Lines the Alternate Exterior Angles are equal.
So we equate both the angles in this case being,
so the value of x is 59°
You don't need to have a scientific calculator to do such trivial addition.
The equation f(t) = -16t² + 176t is a quadratic equation, and so its maximum must be found at its vertex. In order to get this, you can use the formula
t = -b/2a.
Substituting, we have:
t = -176/2(-16) = 5.5 seconds.
But this is just only the time needed for the flare to reach its maximum height. To solve for the time the flare has been in the air, we multiply the maximum height by 2.
2 x 5.5 seconds = 11 seconds.
Use the calculator in the app photomath