Answer:
x= 99 over 5
Step-by-step explanation:
Go and ask ur teacher
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)
X=4
y=-4
hope this helps u out :)
Combine your like terms. So it would be 10x plus 8x. Which equals 18x. Then you would take -4xy plus 6xy. That equals 2xy.
So your simplified equation would be 18x+2xy.
11 / 2.75 = 4
2 * 2.75 = 5.5
11 - 5.5 = 5.5.
Milliw paid $5.50 more than she would have if she bought them on sale. The work should explain the answer. She spent $11 on 2.75 lbs of cheeries when she could've spent half of that on cherries which were on sale.