4. Determine whether each expression is always, sometimes, or never equal to -2(x-3) -2x+6

-2x-3

-2x-6

-2(x+3)

Is every rectangle is a parallelogram? true false

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¯¯¯¯¯¯¯¯)?

Tell whether the two rates form a proportion