Louis has three more quarters than dimes in his pocket, for a total of $1.80.which equation could be used to determine the number of dimes , x, in his pocket a.0.10(x+3)+0.25x=$1.80 b. 0.10x+0.25(x+3)=$1.80 c. 0.10(3x)+0.25x=$1.80 d. 0.10x+0.25(3x)=$1.80

a

step-by-step explanation:

ppopibujflnnkjh un

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