Actually, the answer is not A, if you're saying A is the first choice above. That's incorrect. You will need to use the Geometric mean for right triangles here to figure out what the value of a is. We will use this form: 
. We have a value for YZ of 3; side a is XZ. That means in order to solve this we need WZ, which we can find using pythagorean's theorem. 3^2 + 4^2 = c^2 and 9 + 16 = c^2 and c = 5. Now we fill in accordingly: 
. Cross-multiply to get 3XZ=25 and side XZ is 
. XZ is 25/3 and YZ is 3, so 25/3 - 3 = XY. That means that XY (side a) = 16/3 or 5 1/3, choice B, or the second one down.
Please help me with numbers 9 and 11.
1 answer:
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Answer: There are 4 matches that are expected to lose by a soccer team.
Step-by-step explanation:
Since we have given that
Probability that a soccer team wins = 65%
Probability that a soccer team ends in a draw = 15%
Total probability we get
Probability that matches are expected to lose is given by
Since number of matches is scheduled to play = 20
Number of matches expected to lose is given by
Hence, there are 4 matches that are expected to lose by a soccer team.