What is the sum of: days in the week + months or

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

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

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air