4+13= 17
4/13=0.307
4x13=52
4-13=-9
Answer:
141°
Step-by-step explanation:
39*2 = 78
360 - 78 = 282
282/2 = 141
I believe the 3rd answer down if the information you provided is correct
Squaring the sum on the top, rules out 1 and 2 (not squaring the 7 only)
then 4 times the difference. so I believe 4 (x-1) on the bottom.
Simplify the experssion and you get 10.
Hope this helps!