ABCD is a quadrilateral with AD=BC, AB=40, CD=20, and angle A plus angle B equals 90°.

What is the area of quadrilateral ABCD?

Hint: Consider how copies of ABCD can be constructed into another shape.

If a pier is 200 meters long and each board is 80 centimeters wide, how many boards are in the pier?

Let g (x) be the reflection of f (x) = x² + 5 in the x-axis. What is a function rule for g (x) ?

Suppose you own a proprietorship that is serious financial difficulty. the assets of the company are 100,000 but liabilities are 175,000. you also have, however, stock in General Motors worth 200,000.

The inequality of 10x equal to or less than 60

Someone tell me the definition of a Coefficient?

the total cost of a pair of shoes is $85.86. What was the cost of the shoes before the 8% sales tax was added?

The sum of two numbers is fifteen. One number is three less than the other. Find the numbers.

Which values for x and y make the statement, (x+4) (y-1) = 0, true? A) x = - 4, y = 1 B) x = - 4, y = - 1 C) x = 4, y = 1 D) x = 4, y = - 1

High Street dog 28 of your muffins that was 7 out of 10 of all of them how many are left

Which numbers below represents a repeating decimal? -2/3, - 3/5, 3/10, 11/20