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LenKa [72]
3 years ago
15

There are 80 students in a school. Every student is taking either algebra or pre-calculus, and some students are taking both. Th

ere are 60 students in the algebra class. If 15 students are taking both algebra and pre-calculus, what is the probability that a randomly selected student is taking pre-calculus but not algebra?
Mathematics
1 answer:
Finger [1]3 years ago
3 0

Answer:

1/4

Step-by-step explanation:

Total students = 80

Students taking both classes =  15

Students taking algebra class = 60

Students taking only algebra class = 60 - 15 = 45

Students taking only pre-calculus class = 80- (45+15) = 80 - 60 = 20

P( students taking pre-calculus but not algebra) = 20/80 = 1/4

                         

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The HL Theorem states that if the hypotenuse and leg of one right triangle are congruent to the hypotenuse and leg of another right triangle, then the two triangles are congruent.

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