A ruby throated humming bird beats its wings 159 times in 3 seconds. How many times does the ruby throated hummingbird beats its wing per second?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

Which verbal expression best describes the algebraic expression 3x ÷ 5? the quotient of three times some number and five the product of some number and five divided by three the quotient of three and some number times five the sum of three and some number divided by five

Fracisco's game involves 3 green, 2 yellow, 4 red, and 3 black marbles. if he randomly draws three marbles from the bag, without replacement, what is the probability that he will draw yellow, and then red, and then black? a)1/192 b)1/72 c)3/220 d)1/55