Arc length = radius * central angle (in radians)
central angle (in radians) = arc length / radius
central angle (in radians) = 7.2 / 9
=.8 radians
The profit would be 5% of 400, or
, that is, $20 for profit! Not much, I suppose...
Switch the second equation to equal y so...
y=-2x-3
then plug in for y in the first equation
2x+4(-2x-3)=6
2x-8x-12=6
-6x=18
x=-3
now plug in for y
2(-3)+y=-3
-6+y=-3
y=3
answer (-3,3)
2 is 60, 1 is 60, 3 is 55, 4 is 120
Answer:
460
Step-by-step explanation:
23x20=460
