laurasouza2003 laurasouza2003

12-06-2017
Mathematics

contestada

If x-y=10 and x+y=20 what is the answer for x^2-y^2?

Respuesta :

puppies22 puppies22

12-06-2017

200 because 15 - 5 is 10 and 15+5 is 20. so 15 squared is 225 and 5 squared is 25 and 225-25 is 200

Answer Link

Otras preguntas

hannon test-drives a car in Germany and drives 95 kilometers per hour. What is her speed in miles per hour?

Really need help!You have arrived on a planet where S2, not O2, is the gas used as fuel in combustion reactions. When gaseous propane (C3H8) is burned in S2, H2

a paper company needs to ship paper to a large shipping business. The paper will be shipped in small boxes and large boxes. The volume of each small box is 6

3. Factory farming funk - The US Environmental Protection Agency (EPA) recently reported that confined animal feeding operations (CAFOS) dump 2 trillion pounds

In what ways did people protest against the Vietnam war?

Frederick Lugard justifies Britain's actions of imperialism by saying that

Alex and his friend Kim made a one-gallon pitcher of lemonade because it was so hot. They drank 5 glasses that each held 2 cups of lemonade. How much lemonade w

which statement describes the Chandra X-ray observatory? A.It sees radio waves B.It is a space telescope C.It captures images of objects on Earth

I have no clue how to do this. plz help

What is the purpose of Usury Laws? A. To govern the assignability of contracts. B. To prohibit charging excess interest on loans. C. To govern contracts invo