Do the dioagonals of parallelograms intersect at right angles always, sometimes or never? Justify your reasoning.

A bowl has the shape of a hemisphere whose diameter is 14 centimeters. By itself, the bowl weights 350 grams. If it is completely filled with liquid that weights 1.

What theory do scientists have for the formation of desert pavement?

In how many ways can Kame listen to four CD's assuming he listens to each CD once?

What is a simpler form of the following expressions? (j + 7) (j - 7) a. j² + 14j - 49 b. j² - 14j - 49 c. j² + 14j - 49 d. j² - 49

Cómo escribirias en multiplicación de factores primos el 600

Select the correct numeral form of this number written in scientific notation. 5.0 * 10^10 0.000 000 000 5 5,000,000,000 50,000,000,000 500,000,000,000

John has a bag of marbles that contains 12 red marbles 20 green and 17 blue. if john pulls one marble what is the probability that it will be a purple marble

Solve for x: 2 over 3 (x - 4) = 2x. 2 - 2 - 8 - 4

kyle mom made a pone and a cake. she cut the pone into 6 equal parts and the cake into 8 equal parts. his family ate 3/4 of the cake. if his family ate more cake than pone. what fraction of the pone coulh have been eaten.

A Cashier at the local bank is expected to serve 12 customers every hour. In the past 15 minutes, he served 4 customers. Assuming the the cashier continues to work at the same rate, will he meet his goal? Explain