Simplify the expression -3 divided by -2/5
a. -7 1/2
b. -1 1/5
c. 1 /15
d. 7 1/2

15/2 or 7.5 or 7 1/2

Step-by-step explanation:

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

the correct is answer is a 9-sided polygon!