X² + y² - 4 x + 2 y = b
x² - 4 x + 4 + y² + 2 y + 1 = b + 4 + 1
( x - 2 )² + ( y + 1 )² = b + 5
y - coordinate of the center of the circle is: y = - 1
b + 5 = r
b + 5 = 7
b = 7 - 5
b = 2
Answer:
Step-by-step explanation:
6^0 + 6^0 + 6^0 + 6
= 1+1+1+6
= 9.
<span>3/5 of 215
Whenever you see the word "of" in a word problem, automatically think "multiplication".
3/5 </span>× 215
0.6 × 215
129
So, 3/5 of 215 is 129.
