Answer:
3(x +3)
Step-by-step explanation:
factored by grouping
Answer:
12 students
Step-by-step explanation:
Given

Required
Determine the number of students that eat lunch once a week
In Sets;
If out of 9, at least 7 eats one a week then
9 - 7 eats lunch once a week

<em>In other words;</em>
2 out of 9 students eat lunch once a week
Number of students in this category is then calculated as thus;




Answer:
the simplest form of 15/20 is 3/4
Answer:
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Step-by-step explanation:
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It will be 80/2 and 0/10 you will have to multiply 10*80/2=4000