What is the equation of the perpendicular bisector of a line segment whose slope is 4/5 and whose midpoint is (-4,9)

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Negative 5 1/12 + negative 4 1/4 + 6 3/4

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base