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

WRITE A LETTCR TO THE PRINCIPALor Your SCHOOL TELL HER THEREASON WHY YOU ARE GOING TO LEAVETHE SCHOOL FOR ANOTHER SCHOOL

A group of students volunteered to finish a task in 25 days .1 Q of students did not come n the work could b completed in 35 days .find original number of stude

A compound sentence contains two or more dependent clauses. two or more independent clauses. two dependent clauses and one independent clause. two independent c

Why Taraaaaaaa >:C Can somebody please help me?

I hereby authorize and direct the Secretary of War . . . whenever he or any designated Commander deems such action necessary or desirable, to prescribe military

how many 4-digit numbers can be formed using only the digits 9, 8 and 7? :p

______is a technology that allows users to access databases that contain case law or statutory law governing a particular issue.

If the average rate of the reaction A --->2B C is 1M/s, what is the average rate of formation (in M/s) of B over that same period of time

1. Based on what you learned from this article, why is the rhetoric of science important?

what kind of subject is antimonopologeographicationalism