Answer: 685 red marbles
Step-by-step explanation:
Lets set up a proportion:
x/1096 = 5/8
(For every 8 marbles, 5 of them are red)
Then we cross multiply
5480 = 8x
and divide!
so 685 marbles
Using it's concept, it is found that a good estimate for the probability of drawing out a green block from the bag is of 0.67 = 67%.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
In this problem, to get a good estimate, we get the probability taking the outcomes from the sample, that is, 67 green blocks out of 100 blocks, hence:
p = 67/100 = 0.67.
A good estimate for the probability of drawing out a green block from the bag is of 0.67 = 67%.
More can be learned about probabilities at brainly.com/question/14398287
Answer: 13/10
Step-by-step explanation:
Answer:
Attached is the complete question and solutions
Let x be number of black markers
4.5x + 2x3.25x + 3x1.98x = 284.24
16.94x = 284.24
x = 16.78 = 17
The person bought 17 black pens, 34 red and 51 green
