there are 20 students in chess club. two students are to be selected for representing the club in a school meeting. in how many
ways can a pair of students be selected from the chess club?
1 answer:
first way is play a match between all of them and select first Palace and second to be selected in the meeting
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The area of the triangle below is 7.5 units
C^2-a^2=b^2 b^2=81-36=45 x^2/36-y^2/45=1?
Triangle Area = .5 * base * height
48 = .5 * (x +4) * x
48 = (.5x + 2) * x
48 = .5x^2 + 2x
.5x^2 + 2x -48 = 0
x = 8
base = 12
Answer:
4.5 x 2
Step-by-step explanation:
4.5 x 2 = 9
Hope it helps
60-12-18-2-8=20
=48-18-2-8
=30-2-8
=28-8
=20
So, 20 students don't take either of these subjects.
