"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
X=t/7
x is the cost for each of the friends plus you (me)
t is the total amount of me and my friends
7 is me and my friends
Hope this helps you •з•
Answer:
4
Step-by-step explanation:
You are multiplying it by 6 after every comma so if 180 will be multiplied by 6 the next term after comma will be 1080
136-28 = 108
108/2 = 54
Answer : 54
