How do you know that angle ADB and angle BDC are supplementary

A rectangle that is 13 units by 9 units

The number of measles cases has increased by 8.3% since 2000. Express your answer rounded correctly to the nearest hundredth. Stated another way, the number of measles cases is times what it was in 2000.

Find the area and perimeter or circumference of each figure: a. Circle with radius 3 cm. b. Circle with diameter 10 feet.

Explain why you think it is or is not possible to give the exact length of the circumference as a decimal.

The Mitchell family is making payments on the refrigerator, which is a cost of $984. If they pay $41 every month, how many months will it take to pay for the refrigerator?

Using a common denominator to write an equivalent fraction for each fraction what would 1/3, 1/5, common denominator be?

How Many square inches will fill a rectangle 6 inches by 2 inches?

On Saturday, $585 was collected from the sale of 55 tickets for a performance. Adult tickets are $12 and student tickets cost 25% less than adult tickets. Find the number of adult tickets and number of student tickets sold on that day.

The square below has side 6x. Find the area of the square remaining after a circle of radius 4x is removed from the square; in other words, find the area of the shaded region in factored form

What is the greatest common factor of 14 and 28