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 ( 65+ )
Otras preguntas
The "Emancipation Manifesto" signed by Czar Alexander II _____. a. provided freedom of religion b. gave serfs land c. allowed free elections d. opened up pr
How many electrons are in the outermost energy shell of a calcium atom?
Which process results in two daughter cells each having the same number of chromosomes as the parent cell? A) meiosis B) mitosis C) cell cycle D) cytokinesis
Hydrogenous sediments originate from elements in a. cold water. b. seawater. c. warm water. d. freshwater.
Danielle and Amber were excited. Neither of them had ever traveled overseas before, and this was their first trip without their families. Danielle couldn’t beli
Your friend has $90 when he goes to the fair. He spends $5 to enter the fair and $15 on food. Rides at the fair cost $1.50 per ride. Which function can be used
why did the north industrialize faster than the south
what kind of formal information education did maria tallchief have
Which of the following is true about a zygote?
Upright rows are a shoulder exercise. True or False?
