We know that
the equation of a circle is
(x-h)²+(y-k)²=r²
where
(h,k)-----> is the center
r--------> is the radius
is the center is the point (0,0) and radius r=20
then
(h,k) is (0,0)
(x-0)²+(y-0)²=20²---------> (x)²+(y)²=400
the answer is
the option D.) x2 + y2 = 400
(a)

(b)we have 4 terms in this expression.
(c)+12 is the leading coefficient in

(d) constant is -45
Answer:
354 and 681
Step-by-step explanation:
I just played with numbers because I learned this when I was 4 but forgot the concept, but now I’m 12 in 11th grade.
Answer:
Looks like <u>inverse property of addition </u>to me
Answer:
897.2
Steps:
1) 4486 divided by 5 = 897.2
2) Estimate:
We know that if the number is less than 5 the number in front of it stays the same, so the answer will be 897.