A bag is filled with marbles. You take out and mark 80 marbles. Then you put the marbles back in the bag and mix the marbles. In
a sample of 20 marbles, 4 of the marbles are marked. About how many marbles are in the bag?
2 answers:
There are about 400 marbles
About 400 marbles. You simply set up a proportion and solve it as I did in the photo attached.
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26 percent of 50 is 13
50-13 is 37
Answer:
it make sense
Step-by-step explanation:
(X is another 2)
x-5=3
2x+1=5
we're gonna barrow 5 from the first question and get the answer in the second question
so..
5-5=0
hope it helps
What expression? I don't see any
Answer: -5(8+3) = -55
Step-by-step explanation: a = 8
