Answer:1,390
Step-by-step explanation: add the top and bottom
Solve for x. I'll do it by completing the square:
2x² = 4x + 9
2x² - 4x = 9
x² - 2x = 9/2
x² - 2x + 1 = 11/2
(x - 1)² = 11/2
x - 1 = ± √(11/2)
x = 1 ± √(11/2)
x = 1 ± √22/2
x = (2 ± √22)/2
Take the solution with the positive square root. Then it follows that a = c = 2 and b = 22. So a + b + c = 26.
Answer:
its D just took the test
Step-by-step explanation:
Height for m months = 10 + 3m millimeters
You basically just have to plug in the number of months in the variable m.
So for 8 months
Height for 8 months = 10 + 3x8 millimeters
Height for 8 months = 10 + 24 millimeters
Height for 8 months = 34 millimeters
For 3 Years.
There are 12 months in 1 year.
For 3 years there are 12 x 3 = 36 months
Plug it into the equation
Height for 36 months = 10 + 3x36
Height for 36 months = 10 + 108
Height for 36 months = 118 millimeters
If 2x + 6y = 3 and 3x -7y =6 then it has to be 6y x 7y =13
