Answer:
The answer is B
Step-by-step explanation:
S.A of pyramid = base area × 4(area of triangle)
base area = (24×24)in
= 576in²
area of triangle = (1/2)×24×12
= 144in²
S.A = 576 + 4(144)
= 1152in²
The slope of a line passing through two points is the ratio between the difference of the y coordinates and the difference of the x coordinates. In formulas, you have
![m(A,B) = \cfrac{\Delta y}{\Delta x} = \cfrac{A_y-B_y}{A_x-B_x}](https://tex.z-dn.net/?f=%20m%28A%2CB%29%20%3D%20%5Ccfrac%7B%5CDelta%20y%7D%7B%5CDelta%20x%7D%20%20%3D%20%5Ccfrac%7BA_y-B_y%7D%7BA_x-B_x%7D%20)
If you plug your values, you have
![m(A,B) = \cfrac{\Delta y}{\Delta x} = \cfrac{-3-9}{2-2} = \cfrac{-12}{0}](https://tex.z-dn.net/?f=%20m%28A%2CB%29%20%3D%20%5Ccfrac%7B%5CDelta%20y%7D%7B%5CDelta%20x%7D%20%3D%20%5Ccfrac%7B-3-9%7D%7B2-2%7D%20%3D%20%5Ccfrac%7B-12%7D%7B0%7D%20)
which is undefined.
In fact, since the two points share the same x coordinate, the segment AB is vertical, and the slope is not defined for vertical lines.
The "CORRECT" answer is 728/81
I hope this helps.
Have a "AWESOME" day! :)
Answer:
uhhhh.....wut?
Step-by-step explanation:
We already know that the hourly rate for John is : 1/6 and the hourly rate for Rick is : 1/8. What we don`t know is a hourly rate for Molly and we will call it 1 / x.
The hourly rate for all together is: 1 / 3
An equation is:
1 / 3 = 1 / x + 1 / 6 + 1 / 8
1 / 3 = 1 / x + 4 / 24 + 3 / 24
1 / 3 = 1 / x + 7 / 24
1 / x = 1 / 3 - 7 / 24
1 / x = 8 / 24 - 7 / 24
1 / x = 1 / 24
1 / 3 = 1 / 24 + 1 / 6 + 1 / 8
The hourly rate for Molly is 1 / 24. Molly can paint the room alone for 24 hours.