During the late 1800s, pollution in cities was caused partly by horses, coal, and inadequate sewer systems. state true or false ?

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Ken earned $128 from his part-time job this summer. he spent 25% of his money on games. he is going to donate 1/6 of the remaining money to charity. how much money will the charity receive?