M = 24
To solve that you divide 42/7 which is 6 then you multiply 4*6 and you get 24
Answer:
perimeter: 42 in.
Step-by-step explanation:
separate the triangle, in the smallest triangle find the missing length of that side (hypotenuse: 13, short leg: 5, long leg: ?), which is (long leg) 12 in. (a^2+b^2=c^2 then 5^2+b^2=13^2) do the same process with the other half of the triangle. and you have your answer. hope this helped :)
"Each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week." because.
Let n be the number of aerobic and strength-training exercises per week.
Let x be the number of strength-training exercises per week on the beginner
15x + 20n = 90
Let y be the number of strength-training exercises for week on the advanced plan.
20y + 30n = 130
Multiply both sides by 1.5, to get:
22.5x + 30n = 135
Subtracting equation 2 from 3 we get:
22.5x - 20y = 5
