the average height of a class of 18 students is 105cm. After the arrival of 7 new students the average decreases by 5cm. Find sum of the heights of all the students in the class

Name these type of angles shown check all that applies

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?