Answer:
351.68 cm^2
Step-by-step explanation:
We need to find the area of the frame itself. the radius of the inner circle is 12, but the frame has a radius of 4. You add 12 and 4 and you get 16. The formula for area of a circle is A=πr^2. So A= 3.14 x16^2. Then you have A= 3.14x 256 and you get 803.84. But we only want the area of the frame, so you have to get the area of the inner circle and subtract. You get A= 3.14 x 12^2. 3.14x144 is 452.16. 803.84-452.16 is 351.68. Hope this helped. :)
Answer:
$1200
Step-by-step explanation:
Every month, Kiersten receives a subscription fee of $10 from each of the subscribers to her website.
Last month she had 100 subscribers. This month, 30 new subscribers joined and 10 members canceled their subscription. The amount of subscribers she has now is:
100 + 30 - 10 = 120
This means that this month, Kiersten will earn:
10 * 120 = $1200
<span>1600<span>(<span>1.035^66</span>)</span></span><span>=<span><span>(1600)</span><span>(9.684185)</span></span></span><span>=<span>15494.696322</span></span>
Answer:
k = 2.5
Step-by-step explanation:
The standard form of a proportional equation is
y = kx ← k is the constant of proportion
y = 2.5x ← is in this form
with k = 2.5