m<ACB = 65°
m<BCD and m<ACB are supplementary
Sum of supplementary angles = 180
so
m<BCD = 180 - 65
m<BCD = 115
Answer
A. 115
The correct answer is D. The numerator and the denominator must be divided by the same number, and 16 is the highest number they can both be divided by. It would simplify down to 3/4.
9514 1404 393
Answer:
Step-by-step explanation:
Negative three is less than (<) negative one, so any statement saying otherwise is incorrect. Correct choices are ...
-3 ≤ -1
-3 < -1
Let h=height of water
Let r=radius of water surface
r/h=16/8 =2, so r=2h.
The volume of water is:
v=(1/3)×π×r²×h
=(1/3)×π×(2h)²×h
=4/3πh³
dv/dh=4πh^2
By chain rule:
dv/dt=dv/dh×dh/dt
but
dv/dt=4
thus:
4=(4πh)×dh/dt
dh/dt=4/(4πh²)
when h=6cm we have:
dh/dt=4/(4π6²)
=0.00884 cm³/min
