20/q = 7/9
20×9 = 7q
7q = 180
q = 180/7
Answer:
Step-by-step explanation:
Answer:
I need answer choices to help you
Step-by-step explanation:
3/7 x+5=8
3/7 x=3
3x=21
x=7
The answer is (2)
Answer:
3.5%
Step-by-step explanation:
In this case, the final probability would be the product of the two probabilities that the plating shows us:
First probability would be:
We are told that three quarters of the equipment (3/4) in the laboratory and the other quarter (1/4) near the pond, we are interested in the latter, that is, the probability is 1/4 = 0.25
Second probability:
We are told that 14% collected insects, therefore it would be 0.14
The final product is the question they ask us:
0.25 * 0.14 = 0.035
Which means that the joint probability is 3.5%
