The centre of the circle is the middle of the two endpoints
so centre M is M(1,2) so the two last options aren't valid since those would be M(1,-2) and M(-1,2)
The radius would be half the distance of the two endpoints so
√(1+2)^2+(2-1)^2
√9+1
√10
so the answer is the second one
Answer:
Step-by-step explanation:
Let
x = the amount of time William has been digging
y = the amount he has left to dig
The hole has to be in 2 ft deep. This means when William starts, the hole was 0 feet deep and has left 2 ft to dig. Hence, y-intercept is
He is able to dig at a rate of ft per minute. Thus, the slope is (negative because the depth left to dig is decreasing).
The slope-intercept form of the equation is so in your case this equation is
Answer:
∠ BCA = 45°, ∠ AWD = 90°
Step-by-step explanation:
All angles are right angles by definition.
Diagonals bisect the angles , so
∠ BCA = 45°
Diagonals are perpendicular bisectors of each other, so
∠ AWD = 90°
Answer:
x²
Step-by-step explanation:
Let "d" represent the divisor (what goes in the blank). Then you have ...
... (x²y)/d = y
Multiplying by d gives ...
... x²y = yd
And dividing by y gives the desired value:
... x² = d
The divisor is x².