Anonymous Anonymous

24-08-2014
Mathematics

Answered

How do you solve the equation... X-4y=22

2x+5y=-21 using substitution?? Someone PLEASEE help!!

Verified Answer :

25-08-2014

\(\left \{ {{x-4y=22} \atop {2x+5y=-21}} \right. \\\\x=22+4y\ \ \ \ \ \ \ \ |substituting\ to\ the\ second\ equation\\2(22+4y)+5y=-21\\44+8y+5y=-21\\8y+5y=-21-44\\13y=-65\\y=-5\\x=22+4(-5)\\x=22-20=2\\\\ \left \{ {{y=-5} \atop {x=2}} \right.\)

Answer Link

Related Questions

Board certification is a requirement to practice forensic psychology inA approximately 25 statesB all 50 statesC federal courtsD none of the above

Which of the following was an important time in Japanese history Meiji Shang Qing Mughal

Willingness to take turns is one way we can express our attitudes through A spoken language B body language C written language D selfconfidence

the bee is pollinating the flower this is an important step in the of flowering plants A speciation B regeneration C sexual repoduction D asexual repoduction

Patient 1 and patient 2 both had a transplant Which explains why patient 1 had a successful transplant and patient 2 did not

on a math course a student scored 95 on the test 92 on the second test 83 on the third test 75 on the fourth test and 53 on the fifth test and 70 on the last te

What is the central idea of Black Hawks Surrender Speech 1832 How does the central idea emerge and develop over the course of the passage Use evidence from the

2xy to the power of 8 exponent

Whats 16 over 8 in a mixed number

Question 15 FillInTheBlank Worth 1 points El hombre es un actor y la mujer es una

Web Analytics