Answer:
first one is A) 21
second one is D) 150
Step-by-step explanation:
first one : add all marbles = 10
there are 3 red
chances of picking a red 3/10 or 30 percent or .3
multiple 70 by .3 and get 21
second one:
A = 6[tex]a^{2}[/tex] (Surface area of cube)
600 = 6[tex]a^{2}[/tex]
a = 10
half of 10 is 5
6([tex]5^{2}[/tex]) = 150
