Find the surface area?
10 in.
8 in.
6 in.
-10 in.
16 in.

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¯¯¯¯¯¯¯¯)?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

(x-5)1/2+5=2 what is possible solution of this equation