Answer:
a total of 129 minutes
Step-by-step explanation:
$17.48 - $2 fixed monthly fee = $15.48
$15.48/0.12 = 129 minutes
Get rid of cos2x by dividing both the values. So Sin2x/cos2x +3cos2x/cos2x.
Tan2x = 3
2x = -71.5 so x is -35.6
Use the quadrant method and add 360 twho the two values tou get.
Total sol lemon juice, H20 % total lemon
9 70% 6.3
x 30% .3x
a) 9-6.3=2.7 ounce of pure lemon.
b) 6.3 ounce of water is in the same mixture