Answer:
10.1
Step-by-step explanation:
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:
B
Step-by-step explanation: If you look at the graph, the only graph with (0,0) is B
What I do first (easier for me) is to change it into slope-intercept form
2x-9y=-36
-9y=-2x-36 2x
--------------- = y= ---- +4
-9 9
the slope is whatever is in front of x, in this case 2/9
Start by creating a linear equation based on the information given:
63=7x
Now, divide 7 from both sides to get x by itself.
(63/7)=(7/7)x
9=x
Thus, it rained 9 days in desert hills.
