How many boys are in the choir​

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm