If the volume for 3-d pyramid a is 400 cm3 and the volume for 3-d pyramid b is 800 cm3, how many times bigger is the volume of pyramid b than pyramid a? 2 0.2 0.02 0.002

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¯¯¯¯¯¯¯¯)?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c