to find the radius of x^2+y^2-10x+6y+18=0, we must complete the square:
x^2 - 10x + y^2 + 6y = -18
Then:
x^2 - 10x + 5^2 - 5^2 + y^2 + 6y + 9 - 9 = -18
Collecting all three constants on the right-hand side, r^2 = -18 + 25 + 9 = 16
Then r = +sqrt(16) = +4 (answer)
Step-by-step explanation:
25z square+93=100z
=25z square+93=10z square
=25z square-10z square=-93
=15z square= -93
Answer:
204 Seconds
Step-by-step explanation:
Step 1 - 68/2 this is to find the unit cost in seconds that it takes to walk up the stairs to get 34.
The 2 is from the amount of flights of stairs you have to walk up to get from floor 1 to floor 3.
Step 2 - 34*6 this is because the unit price is 34seconds/flight of stairs to get 204.
Answer 204 Seconds.
Answer:
first option
Step-by-step explanation:
