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 ( 84+ )
Otras preguntas
What had become of the Greek bronze statues that the Romans copied? a. The statues were lost or melted down for their metal. b. The Greeks kept the statues as
Solve: X+14.91=59.67
which statement about the difference between capitalism and communism is not true
The locations, given in polar coordinates, for two ships are (8 mi, 63º) and (8 mi, 123º). Find the distance between the two ships.
Who confiscated catholic holdings in England
Which of these factors affect a person’s Blood Alcohol Concentration? Check all that apply.
When the Greeks were driven back to the sea by the Trojan army, what did Agamemnon decide to do? Fight to the death no matter what. Sail home before they were a
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. a(n)=1+(n-1)(5.7)
A retrotransposon known as Alu1 is about 300 base pairs in length and is present in the human genome in about 1 million copies. Approximately what percentage of
If you use the bcc field in an email, what are you trying to do? A. Greet the main recipient of the email B. Add a person to the email in full view
