28. it is not a right angle triangle because non of the angles is 90 degree
Answer:
its . 6
Step-by-step explanation:
e2020
ivan used 5 yards of green for each quilt and 4 yards of blue for each quilt.
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
