Y = mx + c
m = gradient
c = y-intercept
Therefore, m=3 and c= -2
The difference between their swim times was 0.055 seconds.

The equation of a circle is represented as :

where,
- "h" represents x - coordinate of the center of circle
- "k" represents y - coordinate of the center of circle
- " r " represents Radius of the given circle
So, from above equation we get:
Therefore, Radius of the given circle measures 6 units.

Step-by-step explanation:
3x+2x+10+2x+5+2x-15 = 360
9x+15-15=360
9x=360
x=40.
- 3x=3×40=120°
- 2x+5=2×40+5=80+5=85°
- 2x+10=2×40+10=80+10=90°
- 2x-15=2×40-15=80-15=65°.
hope this helps you.
Step-by-step explanation:
5(1+x)
= 5 + 5x
= 5x + 5
.......