maita maita
  • 02-02-2017
  • Mathematics
contestada

how do I solve question 5?

how do I solve question 5 class=

Respuesta :

wolf1728
wolf1728 wolf1728
  • 02-02-2017
A) x^2 + y^2 = 80
B) x * y = 12

What is x^2 -y^2?
B) x * y = 12
So y = 12 / x
A) x^2 + (12/x)^2 = 80
x^2 + (12/x)^2 = 80
x^2 + (144/x^2) = 80
Multiplying each side by x^2
x^4 + 144 = 80x^2
x^4 -80x^2 + 144 = 0
X = 1.355 (found by trial and error)
Y = 8.85608 (found by trial and error)

Answer Link

Otras preguntas

Which was not a belief of Voltaire? (Points : 3) The English system was better than the French. God does not take part in human lives. King
An important effect of the Magna Carta on English government was that it
(-2,2) and (-5,-4) finding equation
give the nth term and the next term of this 8,13,18,23,28
Which person was the leader of an Allied power during World War II? A. Benito Mussolini B. Adolf Hitler C. Enver Hoxha D. Franklin Roosevelt
if y=-8 when x=-2, find x when y=32
Is there any disadvantage to a government placing a tariff on imported goods? No, it helps domestic consumers, firms, and workers. No, the only ones who suffer
What is the proper economic term for money that is available for investment? It is "capital," or even more properly, "financial capital." It is "capital," or ev
What is meant by the phrase "In 1900 Europeans believed the world was their oyster?
Why were native Americans forced to abandon their land and move west