Answer:
it would take him 40 mins
Step-by-step explanation:
pr=no:of favourable outcomes/no:of possible outcomes
no:of favourable outcomes=1
no:of possible outcomes=

Answer:
7/10
Step-by-step explanation:
4,5,6,7,8,9,10
7 numbers counting four so 7/10
Answer:
23 degrees
Step-by-step explanation:
Supplementary means they add to 180. Therefore if you subtract this angle from 180, it will give you the other angle.
180 - 157 = 23