Juliett
Juliett
05-05-2014
Mathematics
Answered
If x=2y+3 and 4x-5y=9, what is the value of y?
Answer :
actress4ever
actress4ever
06-05-2014
so we already know what x equals, so just plug it in to the other equation
now we have 4(2y+3)-5y=9
from here, just solve
y=-1
let me know if you have anymore questions :)
ps - Idk if you'd need this but x=1 :)
Answer Link
tadvisohil886
tadvisohil886
06-05-2014
We solve the system by substitution.
x = 2y + 3
4x-5y = 9
Substituting the value of x in equation no. 2 , we have,
4(2y+3) - 5y = 9
8y + 12 - 5y = 9
3y + 12 = 9
3y = 9-12 = -3
thus, 3y = -3
thus, y = -3/3 = -1
thus, y = -1
Answer Link
VIEW ALL ANSWERS ( 28+ )
Other Questions
If you approximate the functionf(x)=1 x2‾‾‾‾‾‾√ near x=1 with the Taylor polynomial P2(x)=2‾√ 2‾√2(x−1) 2‾√8(x−1)2,which of the following is the remainder
China (with over one billion people) and Monaco (with approximately 33,000 people) have the same voting power in the United Nations.Please select the best answe
Write 1 page about the following:• What are the various phases involved in the incident response and handling pr.•.How does each phase in the process impact you
Which department should receive the remittance advice sent by the customer after mail is received in the mail room? a) Cash receipts.b) Sales General ledger. c)
Complete the sentences using a relative pronoun.1. I lent you a book. The book was written by one of my friends.
Which of the changes listed below will shift the equilibrium to the right for the following reversible reaction in an aqueous solution?[tex]\[ HC_2H_3O_2(aq) \
A man stands at a distance of 8 meters from the base of a lighthouse that is 15 meters tall. Find the distance between his feet and the top of the lighthouse.
Tristan has moved the Television and related equipment row. Now, he needs to delete the blank row.\begin{tabular}{|l|c|}\hline \multicolumn{1}{|c|}{ Use } &
The area of a rectangular wall of a bam is 180 square feet. Its length is 8 feet longer than the width. Find the length and width of the wall of the bar.The wid
Question 9 of 20Garnishment of wages means that a:A. creditor is earning interest on your wages.B. lender is going to take you to court to collect on a debt.C.
