A heart beats 81 beats per minute. How many beats is that per second?
a) 1.35 beats per second
b) 1.55 beats per second
с) 0.92 beats per second
d) 2 beats per cond

Nine more than four times a number is the same as one less than twice the number. find the number?

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

If log_3(x)=4.5 and log_3(y)=3, what is log_3(x^2/y)? a. 3b. 6.75c. 6d. 1.5