Franco has decorating ribbon that is 8 3/4 feet long, to be used for gift packages. Each package requires 2 1/2 feet of ribbon. How many packages can Franco decorate with his ribbon

lol.

it's ok we all do this sometimes.

-aparri

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

$450 i think. hope this ☺