Solve the equation by completing the square

x^2-4x=5

elyse folded a piece of paper in half 3 times. she then punched 3 holes in the paper. how many holes are in the paper when she unfolds it?

write a polynomial function of least degree with integral coefficients the zeros of which include 4 and 4-i

A map of a new dog park shows that it is triangular and that the sides measure 18.5m, 36.9m, and 16.9m. Are the dimensions correct?

A group of mountain climbers begin an exposition with 270 pounds of food. They plan to eat a total of 15 pounds of food per day. Write and solve a linear equation to find the number of days their food will last

How to use Pythagorean theorem with a rectangle? I have all measurements but i don't understand how to use it with the Pythagorean theorem

Esperanza holds a bond for 10 years that has a 4% coupon rate and a $2000 par value. How much interest would Esperanza receive if she purchased the bond? 800$ 8000$ 80$ 8$ 2$

If I have 3 water melons and a sick chicken how many colorblind dollars I have

F (x) varies directly with x and f (x) = 42 when x=14 find the value of f (x) when x=26

Find the coordinates of the orthocenter of triangle ABC with vertices A (2, 6), B (8, 6), and C (6, 2). A. (5, 4) B. (1, 2) C. (6,4) D. (6, 8)

Square root 8y+1+5=1