vupcake vupcake

21-06-2019
Mathematics

contestada

If x + y = 12 and xy = -5, calculate the value of 1/x + 1/y.

Respuesta :

konrad509 konrad509

21-06-2019

[tex]\dfrac{1}{x}+\dfrac{1}{y}=\dfrac{y}{xy}+\dfrac{x}{xy}=\dfrac{x+y}{xy}=\dfrac{12}{-5}=-\dfrac{12}{5}=-2,4[/tex]

Answer Link

Otras preguntas

Cat body weight is a trait that shows continuous variation, as shown in the graph below of the body weights of a sample of 3 year old female male cats: [Inser

After showing support for Jackie Robinson, pee wee Reese receives a threatening letter, but when he takes the letter to branch Rickey’s office, he soon learns t

2. You're a policy analyst for the Pie-in-the-Sky Think Tank in Washington. A prominent politician has asked you to determine what the efficient level of emissi

Do a test ICFES style using emphatic Do

In which of the following ways does the drama Our Town break with tradition? Select two answers. lack of staging having characters age over the course of the p

Sophia has saved $45. She got a summer job mowing lawns, and gets $6 for every lawn she mows. How many lawns does Sophia need to mow to save exactly $87, the co

guya im tired any tips to keep myself energized

A sink with a slid She is art studio measure 16 x 15 x 6” a second sink used for just paint brushes has a similar shape and a smaller by scale. Factor of 1/2 fi

What is the meaning of conclusively as used in the text

11234566789888888777777777