Answer:
x < 3
Step-by-step explanation:
Yup
7x+5y=-24 (1)
4x+y=42 (2)
multiply equation (2) by 5 to get
20x+5y=210 (3)
then calculate (3)-(2) which gives you
13x=234 hence x=18
then substitute for x in either equation to get y=-30
The new mean age will be greater than 14.2 years because the teacher is older than the previous mean.
Answer:
whats the question
10 dollars an hour ?
63 dollars total ?
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
18 . ( 14 - 9 ) ÷ [ 12 - ( 19 - 13 ) ]
18 . ( 5 ) ÷ [ 12 - 6 ]
90 ÷ 6
15