Answer:
50 and 28
Step-by-step explanation:
x+y=78
x-y=22
to find this, subtract 22 from 78 to get 56
divide 56 by 2 to get 28
y=28
add 22 to 28 to get 50
x=50
to double check add 50 and 28 to get 78
also subtract 28 from 50 to get 22
The answer is B. 9
Use cosine rule. In this case, I am using SOH and the right triangle:
sin 60°= a ÷ 6 root 3
(6 root 3)(sin 60°)= a
a=9
A . x=13 is the solution of this question.
Yes
