Answer:
+ 25
Step-by-step explanation:
To complete the square
add ( half the coefficient of the x- term )²
the coefficient of the x- term is 5 and 5² = 25, hence
x² + 10x + 25 = (x + 5)² ← perfect square
-8n+4(1+5n)=-6n-14
-8n+4+20n=-6n-14
12n+4=-6n-14
12n+6n=-14-4
18n=-18
n=-18/18
n=-1
Answer:
548
Step-by-step explanation:
area for the two triangles are 68
and for the two bigger rectangles is 320
and for the small rectangle 180
then add it all up and get 548
Step-by-step explanation:
With the given points, we can first find the gradient of the line:
gradient = (2+1)/(-4-8)
= -1/4
We also know that the formula of a straight line is
Y = mX+C, where m is gradient and C is y intercept.
Hence by substituting the coordinates (-4, 2) and the gradient -1/4, we get:
2 = (-1/4)(-4) + C
<u>C = 1</u><u>.</u> Hence, Answer is C.
(Actually, you can just draw a straight line connecting the 2 coordinates and find out the y intercept)
