Marshall- 8 hours because 8•6=48
Yolanda- 3 hours because 6•3=18
18•2= 36 18•3=54
I think this story is describing a right triangle with one leg 28, hypotenuse 81 - 28 = 53 and we're asked for the other leg,
√(53² - 28²) = 45
Answer: 45 feet
16.6% is the same as 0.166, therefore 377ml total x 0.166 = 62.6ml are acid
That is easy you do the addition and then what ever sign had the bigger number is the number the answer gets
Dr /dt = 7
A = pi r^2
dA / dr = 2pir
dA/dt = dA/dr * dr/dt = 2pir * 7 = 14pir
when r = 12 rate of change of the area = 14*pi*12 = 168pi
= 527.79 cm^2 / minute to nearest hundredth
