meaka1
meaka1
13-05-2017
Mathematics
contestada
I need to know this answer so I can get the answer
Respuesta :
yousefhamed
yousefhamed
13-05-2017
CD=50 DVD=40
5C+7D=530
C=D+10
C-D=10
Solve the system
5C+7D=530
5C-5D=50 (multiply by 5)
Subtract
12D=480
D=40
Substitute in any of the equations
C-D=10
C-40=10
C=50
Answer Link
will1i1ace1it32
will1i1ace1it32
13-05-2017
58 cds and and 34 dvds
Answer Link
VER TODAS LAS RESPUESTAS ( 79+ )
Otras preguntas
PLS HELP!! A Three-Point Turn Chapter 1 "You know, hardly anyone ever needs to do a three-point turn anymore," said Justin, trying to help Becky calm down. "Oh,
Gideon Company uses the allowance method of accounting for uncollectible accounts. On May 3, Gideon Company wrote off the $2,000 uncollectible account of its cu
Suppose that two fair dice have been tossed and the total of their top faces is found to be divisible by 5. What is the probability that both of them have lande
Social psychology focuses on a broad range of topics. Two key research areas in social psychology are: Question 3 options: 1) implicit cognition and explicit co
Simplify the expression. (Section 3.1) 46. 4x + 3 - 9x
Which best describes the claim of a compare-and-contrast essay? O an umbrella statement that establishes the parts of the argument O a statement that provides e
HELP ME I AM TOST DOSE ANYONE KNOW THIS
A washer and a dryer cost 792 combined. The washer costs 92 more than the dryer. What is the cost of the dryer?
scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13. use empirical rule to determine the following: a) what
During a cash poker game, a professional gambler bets $6,000 on the cards in his hands. The bet has a 0.81 probability of producing a large profit of $6,500, a
