Answer:
51 were the total number of the tickets sold at a school carnival were early-admission tickets.
Step-by-step explanation:
Total number of tickets sold by = 100
Let 
be the early-admission tickets sold by the school.
As 51% of the tickets sold at a school carnival were early-admission tickets.
so
Therefore, 51 were the total number of the tickets sold at a school carnival were early-admission tickets.
Answer:
It will take them 1.4 hours.
Step-by-step explanation:
65 + 85 = 150
200 divided by 150 = 1.4
What we know:
12 cupcakes already made
12 is 30% of total cupcakes (c) needed
Total cupcakes c are 100%
What we need to find:
Total cup cakes c
Set up propportion:
12/30=c/100
30c=(12)(100)
30c=1200
30/30c=1200/30
c=40
She needs to make a total of 40 cupcakes.
The value of a right angle is 90°, equal 12x-9 to 90 to find x.
12x-9=90
Add 9 to both sides.
12x=99
Divide both sides by 12.
x=8.25
