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
It's a good idea to take a nap or call a rideshare service _____. A. instead of driving while drowsy B. between 1 a.m. and 2 a.m. C. if you are energetic D.
Asezual reproduction results in greater reproductive success than does sexual reproduction when: a. pathogens are rapidly diversifying b. a species has accumul
i need help, please!!
Light of wavelength 687 nm is incident on a single slit 0.75 mm wide. At what distance from the slit should a screen be placed if the second dark fringe in the
Which lymphatic organ does NOT contain lymphatic nodules? a. Spleen b. Palatine Tonsil c. Thymus d. Lymph Node
The highest barrier that a projectile can clear is 19.7 m, when the projectile is launched at an angle of 15.0o above the horizontal. What is the projectile’s l
Which term refers to the tearing of ligaments surrounding a joint? a. cramp b. spasm c. sprain d. strain
DOES ANYONE UNDERSTAND???An amount of $40,000 is borrowed for 5 years at 3% interest, compounded annually. If the loan is paid in full at the end of that period
Which choices are real numbers? Check all that apply. the A. (-131072)1/16 B. (-256)1/11 O c. (-5776)1/7 D. (-531441)1/12
A company’s flexible budget for 16,000 units of production showed sales, $48,000; variable costs, $24,000; and fixed costs, $17,000. The operating income expect
