I think it is 6/16 because if you add 1/4 with 5/12
Substitution time :D
c = 8
d = -5
All you have to do is replace the variables(letters) with the numbers!
3(8 + (-5))
Do parentheses first! And remember that adding a negative is the same as subtracting :)
3(3) = 9
Try doing 1/6x + 1/2y > 1...that should be asier to graph....all I did was divide 2x by 12 and 6y by 12
Answer:
R = 25.8
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
cos R = adj side / hyp
cos R = 9/10
Taking the inverse cos of each side
cos ^-1 ( cos R) = cos^ -1 ( 9/10)
R=25.84193
Rounding to the nearest tenth
R = 25.8