Answer: 3
Step-by-step explanation:
Let E be the event of that student pierces ear and N be the event of that student pierces nose.
Given:
For any two event A and B, we have
Similarly ,
Hence, 3 students have piercings both on their ears and their noses.
It would take her 35 minutes to run 5 miles
Answer:
Step-by-step explanation:
There are two variables, q and r in the expression given. To make r the independent variable, it simply means, make q the subject of the formula, so that variable q would be dependent on variable r. As r changes, q changes also.
Thus,
Open the parenthesis
Add 10 to both sides
Answer:3
Step-by-step explanation: difference means subtract so you subtract 12 and 9 which gives you 3.