Answered

Find answers to your most challenging questions with the help of IDNLearn.com's experts. Get accurate and detailed answers to your questions from our dedicated community members who are always ready to help.

Can someone help me? Plzzzzz :c I need it for tmw
I'll be soo happy if someone help me

Mike purchased 3 DVD's and 14 video games for $203. Nick went to the same store and brought 11 DVD's and 11 video games for $220. How much is each video game and each DVD?

Can Someone Help Me Plzzzzz C I Need It For Tmw Ill Be Soo Happy If Someone Help Me Mike Purchased 3 DVDs And 14 Video Games For 203 Nick Went To The Same Store class=

Sagot :

Luanaidn
[tex]x-cost\ of\ DVD\\y-cost\ of\ video\ game\\\\ \left \{ {{3x+14y=203\ \ \ } \atop {11x+11y=220\ \ } \right. \\\\ From\ first\ second:\\11x=220-11y\ \ \ \ |:11\\x=20-y\\\\Substitute\ to\ first:\\3(20-y)+14y=203\\60-3y+14y=203\\-3y+14y=203-60\\11y=143\ \ \ \ |:11\\y=13\\\\x=20-13=7\\\\ \left \{ {{y=13} \atop {x=7}} \right. [/tex]
Chasenissenidn
3D+14G=203(11)    use elimination      33D+154G=2233
11D+11G=220(-14)   to cancel G   -154D-154G=-3080
                                      
                                     -121D=-847   divide by -121 on both sides
                                         D=7     plug back into equation
11(7)+11G=220
77+11G=220   subtract 77 from both sides
11G=143 divide by 11 on both sides
G=13
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Find clear answers at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.