which of the following is a lab hazard A. laser radiation hazard B. animal hazard C. Explosive hazard D. chemical

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

Factor the polynomial by its greatest common monomial factor.

A+b= 17, ab=70, find the value of |a-b|