Answer:
x^2 / 4pi
Step-by-step explanation:
The area of a circle is (pi x r)^2
The circumference of a circle is 2pi x r
The find the radius, you need to divide x by 2pi, so x / 2pi
Then just plug it in as the radius:
(pi x (x / 2pi))^2 = x^2 / 4pi
The number of pounds of copper in 120 pounds of brass is = 78 pounds of copper
<h3>Calculation of number of pounds of copper</h3>
The percentage of copper in the brass = 65%
Therefore the quantity of copper in the brass = 65/100= 0.65 pounds
This means that 1 pound brass contains = 0.65 pounds of copper
The quantity of copper in 120 pounds of brass = 120 * 0.65
= 78 pounds of copper.
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Answer:
2.1000x10^03
Step-by-step explanation:
Based on Molly's willingness to pay for the 8th trip, and the number of trips she can make over the bridge, her willingness to pay for the bridge repair would be<u> $1.00.</u>
<h3>What is Molly's willingness to pay for taxes to fix the bridge?</h3><h3 />
Molly's willingness to pay for trips is equal to the total consumer surplus she gets.
This means that her consumer surplus is $0.50.
With the bridge fixed, she can make 2 more trips than before because she can make 10 trips.
Her willingnesss to pay for the taxes will therefore be equal to her willingness to pay for the remaining trips:
= 0.50 x 2
= $1.00
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4(3w+5)-2w=70
10w+20=70
10w+20-20=70-20
10w=50
10w/10=50/10
w=5
