Which is a valid proportion? 3 21

428

5 29

630

16

O 7° 49

2 12

05-15

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o

Write the ratio as a fraction in lowest terms 1 1/2 to 3 1/3