Write the following expression in simplest form: 4[3m + 5] + 9m + 3

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¯¯¯¯¯¯¯¯)?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17