Answer:
15x+9y= 360----------1
x+y= 30--------------2
Step-by-step explanation:
Step one:
given data
let adult be x
and child be y
A hairstylist charges $15 for an adult haircut and $9 for a child haircut
She wants to earn $360 dollars
15x+9y= 360----------1
and cut 30 haircuts this week
x+y= 30--------------2
Step two:
Hence the system of equations for the situation is given as
15x+9y= 360----------1
x+y= 30--------------2
Answer: 7:1
Step-by-step explanation:
The answer is 7:1 because when referring to ratios the answer has to correspond to a group of items to something else. In this case, we are comparing 7 inches to a yard.
Answer:
yes
Step-by-step explanation:
$158s = Cost per student
$50s + $2160 = Cost of Uni
158s = 50s + 2160
-50s -50s
108s = 2160
s = 20
At 20 students the university would break even.