$\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\qquad 
\begin{cases}
r=radius=\frac{diameter}{2}\\
h=height\\
----------\\
diameter=1.8\\
r=\frac{1.8}{2}=0.9\\
h=5
\end{cases}\implies V=\pi \cdot 0.9^2\cdot 5\\\\
-------------------------------\\\\
\textit{is draining at }\boxed{2.1}\ \frac{ft^3}{min}\textit{ , it has a total of }\boxed{\pi \cdot 0.9^2\cdot 5} \ ft^3
\\\\\\
\textit{it'll take }\cfrac{\pi \cdot 0.9^2\cdot 5}{2.1}\ minutes$

3 0

3 years ago

Three siblings are comparing their Ages Jenna is the youngest. Her brother Carl is 6 years younger than her . Her sister eve is

ryzh [129]

Answer:

hgjjjjjjjjjjjjjjjjggggg

Step-by-step explanation:

hggggggggggggggggggjgjjj

8 0

3 years ago

Simplify the expression -4x^2(3x − 7).

satela [25.4K]

Answer:

Step-by-step explanation:

Simplify the expression -4x^2(3x − 7).

A. -12x^3 + 28

C. -12x^3 − 28

D. -12x^3 − 28x^2

5 0

3 years ago

Read 2 more answers

How to find instantaneous rate of change algebraically?

frosja888 [35]

You use (y2-y1)/(x2-x1) so if you have two points (ex: (1,2) and (2,4)), plug in those number into the formula
(4-2)/(2-1) = 2/1 = 2 so the slope (or instantaneous rate of change) is 2 for those two points<span />

3 0

4 years ago