Mathematics, 28.06.2019 01:00 spreadlight10
What is the diameter in inches of a circle that has an area of 16pi square inches
Answers: 2
![\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ A=16\pi \end{cases}\implies 16\pi =\pi r^2\implies \cfrac{16\pi }{\pi }=r^2\implies 16=r^2 \\\\\\ \sqrt{16}=r\implies 4=r~\hfill \stackrel{\textit{diameter is twice the radius}}{d=8}](/tpl/images/0025/3144/ea3d9.png)
Another question on Mathematics
Mathematics, 21.06.2019 15:20
Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36
Answers: 3
Mathematics, 21.06.2019 16:00
Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step
Answers: 2
Mathematics, 21.06.2019 17:00
Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?
Answers: 1
Mathematics, 21.06.2019 19:40
Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297
Answers: 1
You know the right answer?
What is the diameter in inches of a circle that has an area of 16pi square inches...
Questions
History, 09.10.2019 01:30
Social Studies, 09.10.2019 01:30
History, 09.10.2019 01:30
History, 09.10.2019 01:30
Chemistry, 09.10.2019 01:30
Physics, 09.10.2019 01:30
Mathematics, 09.10.2019 01:30
Health, 09.10.2019 01:30
Health, 09.10.2019 01:30
History, 09.10.2019 01:30
