Need help
Use algebraic addition to simplify these expressions. Show your work.
A. (-1)-(-8)
B.(-7)- 7
C.(-4)- 6
D.(-1)+(-7)-4
E. 5-(-5)-(-4)

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.