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JulsSmile [24]
3 years ago
9

Help me pls on these

Mathematics
1 answer:
labwork [276]3 years ago
7 0

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 = 6a^{2} (Surface area of cube)

600 = 6a^{2}

a = 10

half of 10 is 5

6(5^{2}) = 150

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