Answer:
-10,10
Step-by-step explanation:
The given quadratic equation is

The discriminant of this equation is given by;

where a=k, b=20, c=k
For rational solutions, the discriminant must be zero.

Simplify to get:

This implies that:


Take square root to get:



Answer:
66 degrees
Step-by-step explanation:
angle WOX is congruent and vertical with angle YOZ
Answer:
π = Circumference/ Diameter
Step-by-step explanation:
Answer:
448 square feet.
Step-by-step explanation:
First off lets calculate the required wallpaper for the two walls which have lengths 15 ft, 15*8*2=240 is the answer as 8 and there are 2 walls so we multiply by 2 then we calculate the other 2 walls with lengths 13 ft, 13*8*2=208 then we finally add them 240+208=448.