Answer:
360 = x+123+ 90
x = 147
Step-by-step explanation:
The three angles form a circle which is 360 degrees
360 = x+123+ 90
Subtract 123 and 90 from each side
360 -123 - 90 = x
147 = x
1] 0.23
2] both are same
3] 20/100 *80= 16
The answer for this question is 10 times bigger