Answer:
15
Step-by-step explanation:
9/v=27/45 Cross multiply
405=27v Divide by 27 on both sides
15=v
Since the big triangle is an isosceles one, we conclude that the angles of the left triangle are: 32, 90 and 3x-10. Sinche the sum of this angles have to be 180° we have:

Solving for x, we have:

Therefore, x=22.67 and the answer is A.
It is irrational because it is a decimal that doesn't terminate or repeat! :)
Answer:
$192
Step-by-step explanation:
2400/48=50
50x3.84=192
Answer:
19 Cds left.
Step-by-step explanation:
The question said he used 31 Cds, so 50 minus 31 is 19.