Answer:
a)......1+2=90 degree.....
so,x+x-20=90=2x=110
x=55degree
Step-by-step explanation:
b)let it be a triangle....angle1=56
2=y
3=29....by vertically opposite angles
by ext angle property... x= 1+3=56+29= 85
Answer:
1 us dollar = .85 euros
and 1 euro = 1.18 dollars
Step-by-step explanation:
E = 17/20 D
If we have 1 D
E =17/20 (1)
E = .85
If we have 1 euro
1 = 17/20 D
Multiply each side by 20/17
20/17 = 20/17 * 17/20 D
20/17 = D
1.176470588 =D
Since this is money we round to the nearest cent
1.18 = D