Line dilations due tomorrow! ill mark brainliest if you explain! tysm

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.