63. The ratio 63:9 is equal to 21:3 because 3x3 is 9 and 21x3 is 63
Answer:
the answer is c
Step-by-step explanation:
Answer:
its c
Step-by-step explanation:
got it correct
Answer:
5/11
explanation
Probability here is the chance of selection out of a total. So, we need to first find the total number of marbles.
total
=
5
+
3
+
2
+
1
=
11
So there are
11
marbles total. The probability that we pick one of the
3
green marbles out of the
11
is simply that ratio:
P
green
=
3
11
Same idea for yellow:
P
yellow
=
2
11
The probability of picking either of these colors is simply the sum of their probabilities.
P
green or yellow
=
P
green
+
P
yellow
=
3
11
+
2
11
=
5
11
(15/3)+2(5)
5+10
15
The answer is going to be 15
