Aball weighing 3/4 lb is thrown vertically up from a point that is 6 feet above the earth's surface and with an initial velocity of 20 feet / s. as it rises the air resistance acts on it which is numerically equal to (1/64) v (in pounds), where v is the speed (in feet per second). how high will the ball reach?

b) 36

step-by-step explanation:

18 times 2 is 36

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

x-3y=4

step-by-step e