In an equilateral hexagon, four of the exterior angles each have a measure of x degrees. the other two exterior angles each have a measure of twice the sum of x and 48. find the measure of each exterior angle. (show )

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 price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i