Answer:
He has the side lengths in the wrong place in the cosine ratio. (1st Answer on Edgen)
Step-by-step explanation:
When you factor the equation...
r^2-4r-77
r^2+7r-11r-77
r(r+7)-11(r+7)
(r-11)(r+7) so each parenthetical term is a dimension.
Note that r>11 though for any possible real solution.
Answer:
30
Step-by-step explanation:
21 + 9 = 30
Answer: I hope this helps!!!
Step-by-step explanation:
Phrase 1: 18j+10
Phrase 2: 2(9j+5)