All except combine like terms. Since you only have 1 variable.
Hope this helps.
r3t40
Answer:
CD = 3.602019190339
Step-by-step explanation:
CD = DA - CA
DA = DB×Cos(29) = 18.7×cos(29) = 16.355388523507
BA = BA×cos(43) = 18.7×cos(43) = 13.676314220278
CA = BA÷tan(47) = 13.676314220278÷tan(47) = 12.753369333168
Then
CD = 16.355388523507 - 12.753369333168 = 3.602019190339
20 because 70 divide by = 35
64-128-256
each step double previous number
I believe that b.Fractions are rational numbers is not true
sorry if its wrong