Answer:

Step-by-step explanation:
Urn U1: 3 red and 2 yellow marbles, in total 5 marbles.
The probability to select red marble is
Urn U2: 3 red and 7 yellow marbles, in total 10 marbles.
The probability to select red marble is
Urn U1: 1 red and 4 yellow marbles, in total 5 marbles.
The probability to select red marble is
The probability to choose each urn is the same and is equal to 
Thus, the probability that the marble is red is

1)

2)

each of other angles measures 82.5 degrees
3)

4)sorry I don't know the last one
Answer:
9 feet
Step-by-step explanation:
Given:
A prism with a triangular base has a volume of 432 cubic feet.
The height of the prism is 8.
The triangle base has a base of 12 feet.
Question asked:
The height of the triangular base of the prism = ?
solution:
Volume of triangular prism = 
Dividing both side by 8


Multiplying both side by 2

Dividing both side by 12

Thus, height of the triangular base of the prism is 9
15 is the answer hope this helps
A= adult
C= child
3A+C = 38.3
A+3C = 52
There is no logical way to find the value of each other than guess-and-check.