How many horizontal units are between the points (-2,8) and (7,8) on a coordinate plane?

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Find the value of the variable and the length of each secant segment.

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?