Answer:
75 is the anwer
75
Step-by-step explanation: 2 times 30 is 60 30 divide by .5 is eqaul to 15 becasue it is half
and 60+15=75
46/69
Step-by-step explanation:
20+10+4+6
Hope this helps :)
57+28x
only this
i don't know you 4x2 or 4x+2
Actually a 30, 40, 50 triangle is just scaled ip 3, 4, 5 triangle, which is a well known right angled triangle.