7(3x-4)=49 how do you solve

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

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¯¯¯¯¯¯¯¯)?