Answer:
1/8 or 0.125
Step-by-step explanation:
Let x be the length of the sides of the square ABCD.
Therefore, the length of CN and CM is x/2.
The area of the triangle MCN is:

The area of the square ABCD is:

Thus, the probability that a random point lies in the triangle MCN is:

The probability that the point will lie in the triangle MCN is 1/8 or 0.125.
You want to use the addition property, so you need to ADD each term. Just change the minuses to pluses, making sure you keep the negative with the number
5x-8x-7y+y =
5x + -8x + -7y +y
1 yard=3 feet so 100 yard=300 feet
20*1.95 =39 girls
26girls/39girls =0.667
0.667*100 = 66.67%
Answer is Choice A - 1.
1 times 2 is 2, and 2 + 8 is 10.