mjk369 mjk369
  • 04-03-2016
  • Mathematics
contestada

X^2 + y^2=40 and y=x-4 solve this simultaneous equation

Respuesta :

Аноним Аноним
  • 04-03-2016
Write x-4 instead of y.
x²+(x-4)²=40
x²+x²-8x+16=40
2x²-8x-24=0
x²-4x-12=0
(x-6)(x+2)=0
x=6 or x=-2

for x=6, y=6-4 = 2
for x=-2, y=-2-4 = -6
Answer Link

Otras preguntas

How did the growth of the rail networks impact the meatpacking industry?
Given any two number,which is greater,the lcm of the numbers of gcf of the number?why?
Leticia wants to go on a band trip to new York for spring break. It cost $1200 per student.The band will pay 15% of the cost for each student
an apple orchard sells apples in bags of 10 the orchid sold a total of 2430 apples one day how many bags of apples was this
What is 4180 round to the nearest thousand
an apple orchard sells apples in bags of 10. the orchard sold a total of 2,430 apples one day. how many bags of apples was this
In the following passage, what does commandeer most likely mean? Choose the correct answer. Davey Jones was the sneakiest pirate that ever was, at least accordi
Is 50% a rational or irrational number
In some cases concerning _____, a governor may refuse to extradite a fugitive. terrorist acts bank robbery child custody violent crime
Charlotte reads 8 1/3 pages of a book in 10 minutes. What is her average reading rate in pages per minute?