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 ( 94+ )
Otras preguntas
Genes often contain large regions that are NOT included in translation. These sections are called
How did people in the North and South resist slavery?
what is social media
how technological developments have informally changed the Constitution up until now
So i have a assignment that i have to and i wondering if you guys could help me: Title of Section: Describe all numbers that satisfy both inequalities. Includ
Please help, im so confused lol thank you
Which could be the area of the base of the triangular prism? 5 ft 3 ft 5 ft 4 ft INot drawn to scalel
A pyramid has a square base and a height of 6 ft. The volume of the pyramid is 162 ft^3. Let s be the length of a side of the pyramid's base. A) In terms of s,
what is 1/16 times 3
What is the length of side AB