the outside tempature on a winter afternoon is -7c in the eveing of the same day the outside temperature is -23c

Quadrilateral wxyz is on a coordinate plane. segment yz is on the line x+y=7 and segment xw is on the line x+y=3. which statement proves how segments yz and xw are related

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?