A jar contains 50 marbles, 21 are blue, 15 are yellow, and the rest are red. What is the probability that you pick out a blue marble?

42%

Step-by-step explanation:

There are 21 blue marbles out of the 50. Divide 21 with 50:

21/50 = 0.42

Next, change the decimal to a percentage. To do so, move the decimal point to the right two place values and slap a percentage sign onto it:

0.42 = 42%

42% is your probability of picking a blue marble.

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is this a multiple choice question?

if so it's a and c

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13