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 ( 87+ )
Otras preguntas
_______________ occurs when sensory receptor cells detect a stimulus and then convert it into a neural impulse that transmits that message to the brain. a. Acco
who is elected in the federal assembly?
Will Central America, by adopting trade pacts such as PPP and CAFTA, trade one form of dependency for another?
What is the correct order of levels of organization in an organism, from the least complex to the most complex? A. organ→ system → tissue→ cell B. tissue → orga
Why do we have to annotate paragraphs?
Is a satellite orbiting earth free from earths gravity ? Why or why not
(x-4)/(y+2)=5 how do i solve this?
After taking over the Italian Peninsula, which areas did Rome conquer first?
All of the following are steps the country of Morocco took to increase gender equality in society except __________. A. the expansion of school transportation B
explain why the value of k cannot be equal to 0
