Answer:
72%
Step-by-step explanation:
There are a total of 50 quizzes in the year
From the first 20, the student passes 60%. This makes a total of
![\frac{60}{100} (20) = 12](https://tex.z-dn.net/?f=%5Cfrac%7B60%7D%7B100%7D%20%2820%29%20%3D%2012)
12 passes
Out of the remaining 30 quizzes the student passes in 80% of them. This makes a total of
![\frac{80}{100} (30) = 12](https://tex.z-dn.net/?f=%5Cfrac%7B80%7D%7B100%7D%20%2830%29%20%3D%2012)
24 passes
Adding the two values
12 + 24 = 36
The student passes 36 quizzes out of 50.
We convert this to a percentage
%
Answer:0 3/4
Step-by-step explanation:
Answer:
68.57 mph
Step-by-step explanation:
Answer:
Postulate.
Step-by-step explanation:
If two distinct planes intersect, then their intersection is a line. This is a postulate.
A postulate is a true statement, which does not require to be proved.Postulate is used to derive the other logical statements to solve a problem.
Postulates are also called as axioms. Postulates are the basic structure from which lemmas and theorems are derived. Postulates are the most basic assumptions with which a reasonable person would agree.
Z=yn
divide both sides by n to get y by itself
Z/n=yn/n
Cross out n and n, divide by n
Then becomes 1*1*y=y
Answer:
y=Z/n