$\textit{area of a circular ring}\\\\ A=\pi (R^2-r^2)~~ \begin{cases} r=\stackrel{smaller}{radius}\\ R=\stackrel{larger}{radius}\\[-0.5em] \hrulefill\\ r=2\\ R=3 \end{cases}\implies \begin{array}{llll} A=\pi (3^2-2^2)\implies A=5\pi \\\\\\ A\approx 15.71 \end{array}$

5 0

2 years ago

The population of a city is 451,400. The population is expected to decrease at a rate of 3.2% each year. Which function equation

Kobotan [32]

P(t) = 451400*0.968^t . . . . . models the population after t years.

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The multiplier from one year to the next is (1 -3.2%) = (1 -.032) = 0.968.

3 0

3 years ago

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A partridge flies 3 miles in 15 mins. What is its speed in m.p.h.?

OLga [1]

Answer:

the speed is 12mph

Step-by-step explanation:

hope this helps :)

6 0

2 years ago

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