3cm because if you multiple each one you could divide to
Answer:
(x+9.3)²+(y-4.1)²=169
Step-by-step explanation:
The common equation for a circle in the coordinate plane is:
(x-h)²+(y-k)²=r²
Where (h,k) is the point at the center of the circle and r is the radius:
Here (h,k) is (-9.3, 4.1) and r is 13.
Using this we can substitute to find:
(x-(-9.3))²+(y-(4.1))²=13²
And using arithmetic to simplify we find that the equation of the circle is:
(x+9.3)²+(y-4.1)²=169
Answer:
y=-1
x=-3
Step-by-step explanation:
I'm not 100% sure but I think it's 53.1
If she started out with 100 and she added 5 groups of 10 she should have 150.
100+(5 x 10)
50
100+50=150