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 ( 49+ )
Otras preguntas
Most of southeast asia falls within what climate zone? Mainly Tropical Mainly Arid Mainly temperate Mainly continental
Marie and Jorge are both trying to lose weight. After 3 months they compared their weight loss. Marie’s weight went from 175 to 150. Jorge’s weight went from 19
Under a lean environment, employees have the responsibility and authority to
Explain the importance and attributes of three Greek Orders.
(07.05 HC) * WILL GIVE BRIANLIEST*The work of a student to solve the equation 3(3y − 8) = 10 + 3y is shown below: Step 1: 3(3y − 8) = 10 + 3y Step 2: 6y − 5 = 1
Do you suppose that higher oxygen content in the air causes more photosynthesis? Yes No explain
If the unemployment rate is 9 percent and the natural rate of unemployment is 5 percent, then the:
In one day Portal Computer Company made 400 laptops with 1200 hours of labor. What was its productivity?
These r all examples of what type of bonding because they. Electrons
draw a motel of 13/5
