Answer:
3
Step-by-step explanation:
x = 1
y = 1
6+4-7 = 3
Answer:
34 and 38
Step-by-step explanation:
Solution: Let x be the height of a student in Marta's class.
The mean height of 18 students in Marta's class is 60 inches
We know that:




Therefore, the total measure of all 18 student's heights is 1080 inches