I think you have multiply 5x4 which equals 20 then 20 divided by 10 which equals 2 and that’s ur answer
as a decimal it would be 11.5
and as a fraction it would be 23/2
so none of those answers?
7.5 would be my best guess
Answer:
ABC is more than 90 Degrees because it is an Obtuse Angle
ADC is less than 90 Degrees because it is an Acute Angle
I don't know the exact answer but I hope this helps you a little!