Answer:
Step-by-step explanation:
3:15::60:x
Product of extremes = 3*x = 3x
Product of means = 15*60
Product of extremes = Product of means
3x = 15*60

Answer:
-9y-2(2-7y)+4 expand the brackets using-2
Step-by-step explanation:
-9y-4+14y+4
arrange the like terms
-9y+14y-4+4
=5y becoz -4+4=0
ans=5y
Answer:
The range is 8.
Step-by-step explanation:
7, 1, 9, 3, 5
The range = Largest no. - Smallest no.
9 - 1 = 8