Hayden is playing with a toy airplane. The height of the airplane, in metres, is given by the relation h=-3t^2+48, where t is the number of seconds since the plane was
launched.
a) For how long will the airplane be in the air?
b) Determine the time when it reaches its maximum height? What is the maximum
height?
c) At what time(s), rounded to the nearest tenth of a second, will the airplane reach a
height of 30 m?

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

5104.38 inches

step-by-step explanation:

$97520

step-by-step explanation:

add 6% to the value she got from selling the house.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.