So (m+n)/2= 7
To find m+n, multiply both sides by 2
m+n=14
Final answer: C
Answer:
257 students in the lower school
Step-by-step explanation:
you want to make the fractions have an equal denominator so make 1/3 5/15s and 2/5 to 6/15's, 5+6= 11/15s that leaves 4/15's for the lower part of the school
4 divided by 15 is 4.6 repeating so divide 1200 by 4.66 and boom
Answer:
You just need to find the length of LM and NM and then find the area of semi-circles using the formula πr²÷2
Factors of 21 are : 1,3,7,21....yes, this is correct...true
