4. In the rectangle below, the line MN cuts the rectangle into two
regions. Find the length of line NB so that the area of the quadrilateral
MNBC is 40% of the total area of the rectangle which is 210m2. (S & S)
20 m
NX B
10 m
5 m
M

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

english, cause i can’t you

126 maybe. sorry