allieboney allieboney

03-02-2017
Mathematics

contestada

Your purchase of CDs and DVDs has a total of 7 items. CDs cost9 each and DVDs cost 15 each. The total purchase costs 87 write and solve a system of equations to find x of CDs and y or DVDs that you purchased.

Respuesta :

03-02-2017

9c + 15d = 87
I don't know how to use the equation to answer it, but 4 DVDs were bought, and 3 CDs were bought.

Answer Link

Otras preguntas

Explain the role of the hepatic portal system and lymphatic system within the circulatory system

what is the main reason countries should work together to reduce air pollution

I need your help please❤️ you place $6543 in a savings account which earns.7% interest compounded semi annually, after 3 years how much money do you have?

How many solutions are there to the questiom below 6x+35+9x=15(x+4)-25

Which of the following do you expect to have soil with the highest fertility

Fill in the blanks in the following sentence with the appropriate present tense forms of the verb saber below. Mi hermana y mi madre ___ tocar el piano, pero y

Find the domain and the range of the given relation. startset left parenthesis 6 comma negative 5 right parenthesis comma left parenthesis negative 8 comma nega

The sum of two consecutive odd integers are 236. What is the smaller integer? A.) 115 B.) 117 C.) 119 D.) 113

Do you think Donald Trump should be our rightful president? If not why? Who do you think was our best president?

Yuki has a bowl of ice. She places the ice in a warm room and watches as it melts into liquid water. Yuki then places the liquid water over a Bunsen burner and