Answer:
hope this helps
Step-by-step explanation:
y=2x
y=-2x-4
2x+2x=-4 (grouping like terms)
4x=-4
x=-1
im sorry but im not sure what y is
Answer:
21 Students
Step-by-step explanation:
7:3
7*7=49
3*7=21
49:21
There are 7 days in a week. If you add 7 three times, you get 21, which means that three weeks equals 21 days, which is less than 24
The mean of the track athletes is given by

The mean of the gymnasts is given by

The difference in mean is given by

(rounded to one decimal place)