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Tutors Answer Your Questions about decimal-numbers (FREE)
Question 972854: 3. (a) A rope is wrapped tightly around a wheel with a radius of 3 feet. If the radius of the wheel is increased by 2 feet to a radius of 5 feet, by how much must the rope be lengthened to fit around the wheel? (Round your answer to two decimal places.)
ft
Click here to see answer by rfer(16322) |
Question 972856: 4. Hydrologists sometimes use Manning's equation to calculate the velocity v, in feet per second, of water flowing through a pipe. The velocity depends on the hydraulic radius Rin feet, which is one-quarter of the diameter of the pipe when the pipe is flowing full; the slope S of the pipe, which gives the vertical drop in feet for each horizontal foot; and the roughness coefficient n, which depends on the material of which the pipe is made. The relationship is given by the following.
v =
1.486
n
R2/3S1/2
For a certain brass pipe, the roughness coefficient has been measured to be n = 0.014. The pipe has a diameter of 3 feet and a slope of 0.4 foot per foot. (That is, the pipe drops 0.4 foot for each horizontal foot.) If the pipe is flowing full, find the hydraulic radius of the pipe. (Round your answer to two decimal places.)
ft
Find the velocity of the water flowing through the pipe. (Round your answer to two decimal places.)
ft/s
Click here to see answer by solver91311(24713)  |
Question 973272: Please help me with this problem. I am helping my 9 year old cousin with her homework and I don't understand this problem.
Sally and Joshua have the same amount of money. Joshua pays $9.10 for a bag and has $16.25 left. Sally buys a pen and has $19.60 left. How much does the pen cost?
Click here to see answer by Edwin McCravy(20054)  |
Question 976309: What is the smallest percentage that rounds to…
…90% when rounded to the nearest percent?
…90.0% when rounded to the nearest tenth of a percent?
…90.00% when rounded to the nearest hundredth of a percent?
Click here to see answer by FrankM(1040)  |
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