Well the average would change from 85 to 85.4
A=h/2(a+b)
A=h/2a+2b
A(2a+2b)=h
Answer:
I am pretty sure the anwser is A
Answer:
Step-by-step explanation:
All you do is divide
For a, what is 10 divided by 2? The answer is 5!
For b, what is 21 divided by -3? The answer is -7!
For c, what is 6 divided by 1/3? The answer is 18!
For d, what is -7 divided by -1/2? The answer is 3.5!
we have given that 30 students .
we need to choose committee of 4 students .
so the formula used here
.
where n is the total number of students.
and r is the student chosen from total.
so the possibility of choosing a commitee of 4 from 30 is
.
so there 27405 possibilities can exist.