Ms. Diaz wants to divide her class of 30 students into 10 groups, not necessarily of equal size. What are some of her choices?
1 answer:
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Answer:
Center: (-5,10)
Radius: 2
Step-by-step explanation:
The equation of the circle in center-radius form is:
Where the point (h,k) is the center of the circle and "r" is the radius.
Subtract 121 from both sides of the equation:
Add 10x to both sides:
Make two groups for variable "x" and variable "y":
Complete the square:
Add inside the parentheses of "x".
Add inside the parentheses of "y".
Add and
to the right side of the equation.
Then:
Rewriting, you get that the equation of the circle in center-radius form is:
You can observe that the radius of the circle is:
And the center is:
Let's name all the purchases "x"
so
of them were stuffed animals, and out of that 
were bears.
to get the results we have to multiply the fraction of bears by the fraction of the stuff animals:
.
and now we simplify:
=
and this is the answer!
so
to get the results we have to multiply the fraction of bears by the fraction of the stuff animals:
and now we simplify:
and this is the answer!