2. Explain why the Ratio Test can or cannot be used to determine whether the series isconvergent.(a)[infinity]Qn=1(−1)n (b)[infinity]Qn=1sin(n)(c)[infinity ]Qn=12n+1n2n−1(d)[infinity]Qn=1(n!) 2(2n)!

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

If i have 20$ and i gave 5$ away how much i got

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)