Answer:
9/11
Step-by-step explanation:
Well we know there are 55 students in total and only 45 of them can either play a string or brass instrument.
So 45/55 is 9/11
Thus probably is 9/11 of a randomly selected student who plays either a string or brass.
Answer:
0.104 (10.4%)
Step-by-step explanation:

= 0.028
= 0.104
= 10.4%
Answer:
Step-by-step explanation:
It's 2.3 as the centre of a circle is twice the circumference learn the circle theorem
BD is 31 degrees because it is the same.
ADB is 90-31 because it is a right angle ( 59 degrees)
DEC is 180 - (31*2) because the 180 is of the trangle and the 31 is the same on the other side so times 2 then removed from 180