When there is a 20.1 mi/hr wind, an airplane can fly 630 mi with the wind in the same time that it can fly 521 mi against the wind. Find the speed of the plane when there is no wind.

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1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

75%

step-by-step explanation: