Answer:8
Step-by-step explanation:
This 1 is simple
Just subtract 7 from 15 and the answer is 8
So 15laps-7laps=8laps
Lol I don’t know if this is the one luv but here
Answer:
×=-1 or x=2/3
Step-by-step explanation:
yeah yeah yeah
The equation shown on the table is y=2x
X = plan A and y = plan B
7x + 9y = 720
5x + 3y = 360.....multiply by -3
---------------
7x + 9y = 720
-15x - 9y = -1080 (result of multiplying by -3)
---------------add
-8x = - 360
x = -360/-8
x = 45 minutes <== plan A
5x + 3y = 360
5(45) + 3y = 360
225 + 3y = 360
3y = 360 - 225
3y = 135
y = 135/3
y = 45 minutes <== plan B
so both plans last 45 minutes <==