Answer:
Please, see the attached files.
Step-by-step explanation:
Please, see the attached files.
Answer:

Step-by-step explanation:
Let's break it down. There is..
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A square root of a number:
(assuming "the number" is
).
And they say that 9 is less than that, so we subtract 9 from
, which gives us
.
I hope that helps! :)
A sum means that two numbers are added together. A square means that a number is raised to the second power.
The sum of a number c and its square can be written with this algebraic expression:
Answer:
28 students
Step-by-step explanation:
30% is equal to .3
40 x .3 equals 12
This means the class has lost 12 students.
40 - 12 is 28.
Another way:
Because the class has lost 30% of it's students, you know that the class is 70% of it's original capacity.
70% is equal to .7
40 x .7 is 28