The surface area of the cylinder should be 1130.97. I found this by using the formula a=2πrh+2πr2.
Good luck my bud.
(0,4) you find the slope for AB , slope for AB is = DC
Answer:
y=1.25x+4
Step-by-step explanation:
- Two equations are paralell if they have the same slope.
- Then to find the paralell equation to , we can do the following: clear out y as a function of x, to get the intercept and the slope that accompanies x.
- To do this, we follow the next steps: 1) subtract 5x both sides of the equation (which results in ; 2) divide both sides by (-4), would yield .
- Now we have an clear expression of y as a function of x, and can find a parallel line that passes through (x,y)=(4,9). This new equation shall be an expression that meets the following: 9=1.25 (4)+h, where we do not know the value of h, and the values of (x,y) have been replaced by the point required.
- If we solve the equation above, we obtain the value of h (intercept) for our parallel equation: h=4.
- Then, the parallel equation that passes through (4,9) is y=1.25x+4 (to verify this is ok, replace x=4 in this equation, and you will get y=9, which is what we were lloking for: a parallel equation to y=1.25x-2 that passes through (4,9)