Mathematics, 21.09.2019 16:30 annjetero2oy23ay
John is twice as old as mary. the sum of their ages is 21. how old is mary? let j = john's age and m = mary's age. select the system equations that represents the problem.
j - 2m = 0
m - 2j = 0
j + m = 21
j = m + 2
Answers: 2
Mathematics, 21.06.2019 23:00, moncho6222
72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.
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Mathematics, 22.06.2019 03:30, hajoshh
Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.
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Mathematics, 22.06.2019 03:50, 1940swannabe
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John is twice as old as mary. the sum of their ages is 21. how old is mary? let j = john's age and...
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