Answer:y=7
Step-by-step explanation:
The teacher has to take 10 questions at a time from 12 questions.
Total ways = 12C10 = 12!/(10!)(12-10)! = 12 x 11 / 2 = 66
The teacher can make 66 different exams
Based on the information given, the number of bills will have to be between 13 and 28 every month.
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Solving equations</h3>
Let the number of bills be represented by x.
Therefore, the equation to solve the question will be:
2.25 + (0.10 × x) = 3.50
2.25 + 0.10x = 3.50
0.10x = 3.50 - 2.25
0.10x = 1.25
x = 1.25/0.10 = 12.5 = 13
Also, 2.25 + 0.10x = 5.00
0.10x = 5.00 - 2.25
0.10x = 2.75
x = 27.5 = 28
Therefore, the number of bills will be between 13 and 28 every month.
Learn more about equations on:
brainly.com/question/13763238
Answer:
x= 6
cad=62
Step-by-step explanation:
