NASA creates a weightless
environment by flying a plane in a series of
parabolic paths. The height h (in feet) of a plane
after t seconds in a parabolic flight path can be
modeled by the graph of h = -11t+ + 700t + 21,000.
The passengers experience a weightless environment
when the height of the plane is greater than or equal
to 30,800 feet. Find the period of weightlessness on such
a flight. Explain.

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

73.0769230769% of the games were won

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.