The lifting force exerted by the atmosphere on the wings of an airplane in flight varies directly as the surface area of the wings and
the square of the plane's airspeed. A small private plane has a cruising airspeed of 250 miles per hour. In order to obtain 3 times the
lifting force, a new plane is designed with a wing surface area twice that of the older model. What cruising speed, to the nearest
mile per hour, is planned for the new model?
a 125 mph
C.312 mph
b. 280 mph
d. 306 mph

5 pm

step-by-step explanation:

i think the amount would be $140.62

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh