P0tential
P0tential
03-05-2018
Mathematics
contestada
After how many hours does he break even?
Respuesta :
mkryukova19
mkryukova19
03-05-2018
25+30x=5x²-10
5x²-30x-35=0
x²-6x-7=0 -7=-7*1, -6=-7+1
(x-7)(x+1)=0
x-7=0,
x=7 hours.
x+1=0, x=-1 (we cannot take negative for hours)
So, answer is 7
Check
y=25+30*7=235
y=5x²-10= 5*7²-10=245-10 =235
Answer Link
VER TODAS LAS RESPUESTAS ( 48+ )
Otras preguntas
what are the functions of four major federal law enforcement agencies?
Can anyone explain oxidation, and reduction reactions of: 1. aldehydes 2.ketones 3. carboxylic acids 4.primary alcohols 5.secondary alcohols
This scatter plot shows the amount of tips earned and hours worked. Choose the statement that is best supported by the data in the scatter plot. Question 10 opt
What are four things that makes the spacing of plant important?
In which Middle Eastern country is the literacy rate for women 55 percent?
Every night Stephanie reads 3 more pages of her book than Michael reads of his book. The equation S=m+3 can be used to model the number of pages Stephanie, S, r
IV. Beantworten Sie die Fragen. Benutzen Sie bei der Antwort Infinitivgruppen.1. Wozu gebrauchen die Frauen Kosmetik? (Sie wollen noch schöner aussehen)2. Wie k
Question #4 Multiple Choice Which of the following satellites provides information on nuclear detonation and missile launches to allow governments to make strat
A 10-N force is applied to two toy cars; Car A has a mass of 100 kg, and car B has a mass of 90 kg. Which car would have the greater acceleration and how much g
Help me plx. The genetic material in the cell is the nucleic acid lipid protein
