The population of baltimore was 520,000 in 2000. now its 750,000. what was the change in population? what was the precent of change?

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.