2 years ago

MY LAST QUESTION (NEED HELP ASAP) PLEASE!!!!

Mathematics

1 answer:

sdas [7]2 years ago

5 0

Answer:

The answer is A

Step-by-step explanation:

You might be interested in

(Area is a rounded rectangle) 4.6 cm long and 5 cm wide How do I find area?

andrezito [222]

Answer:

multiply 4.6 and 5

Step-by-step explanation:

4.6 × 5 = 23

4 0

2 years ago

If a wheel with a radius of 80 inches spins at a rate of 50 revolutions per minute, find the approximate linear velocity in mile

Lubov Fominskaja [6]

$\bf \textit{arc's length}\\\\
s=rw\qquad 
\begin{cases}
r=radius\\
w=\textit{angular speed}
\end{cases}\qquad w=\cfrac{50 rev}{min}\cdot \cfrac{2\pi }{rev}
\\\\\\
w=\cfrac{100\pi }{min}\qquad s=80in\cdot \cfrac{100\pi }{min}\implies s=\cfrac{8000\pi\ in}{min}\\\\
-------------------------------\\\\
\textit{now to convert it to miles/hr}
\\\\\\
\cfrac{8000\pi\ in}{min}\cdot \cfrac{ft}{12in}\cdot \cfrac{mile}{5280ft}\cdot \cfrac{60min}{hr}\implies \cfrac{8000\pi \cdot 60\ in}{12\cdot 5280\ hr}$