What is needed when constructing an angle properly? a. ruler, pencil b. compass c. ruler, protractor, pencil d. protractor

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c