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a point on the edge of a fan blade that is rotating in a plane is 10 centimeters from the center of the fan. what is the distance traveled, in centimeters , by this point in 15 second when the fan runs at the rate of 300 revolution per minute?a750派 b 1500 c1875 d 3000 e 7500 p,r,s,t,u An arithmetic sequence is a sequence in which each term after the first is equal to the sum of the preceding term and a constant .IF the list of letter shown above is an arithmetic sequence, which of the following must also be an arithmetic sequence? 12p,2r,2s,2t,2u 11 p-3,r-3,s-3,t-3,u-3 111 p^2 r^2 s^2 t^2 u^2
a 1 only b11only c 111only d 1and 11 e 11and111
也麻烦给我讲讲解下题目~谢谢` |
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