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
Answer:
First step to solving the equation is to subtract 10 on both sides:
10 - 10 + 5x =65 -10
5x = 55
Then, we divide by 5 on both sides!
5x ÷ 5 = 55 ÷ 5
x = 11
Our result is 11, so the answer to the problem is 11
I hope I was helpful!
3/2 = x/30........3 dogs to 2 cats = x dogs to 30 cats
cross multiply
(2)(x) = (3)(30)
2x = 90
x = 90/2
x = 45 dogs <===
