Answer:
Step-by-step explanation:
a. when t=0,h=3ft

c.t=47/32 sec
d.
time taken to fall 2301/64 ft=0*t+\frac{1}{2}*32*t^2
t^2=\frac{2301}{64*16}
t=\frac{\sqrt{2301}}{8*4}=\frac {47.97}{32}
total ~time=\frac{47+47.97}{32}=\frac{94.97}{32} sec
Area of the walls = 2*8*21 + 2*8*28 = 784 sq feet
so number of gallons required = 784/350 = 2.24 gallons answer
Answer:
x = 4
Step-by-step explanation:
DE is parallel to AC and intersects the other 2 sides. It divides those sides proportionally, that is
=
, thus
=
( cross- multiply )
2(10 - x) = 3x ← distribute left side
20 - 2x = 3x ( subtract 3x from both sides )
20 - 5x = 0 ( subtract 20 from both sides )
- 5x = - 20 ( divide both sides by - 5 )
x = 4
Answer:
Step-by-step explanation:
Left side
4x + 2x - 10
6x - 10
Right side
6x - 12
Eventually when you equate these sides, you will get an absurd answer because the 6x term will be subtracted out on both sides
that means you get -10 = - 12
which destroys the whole concept of equality. There is no solution.