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 ( 93+ )
Otras preguntas
A machine prints 230 movie posters each hour. Write and solve an equation to find the number or hours it takes thr machine to print 1265 posters
between what 2 integers does 75 lie in
Find the area of the triangle 8.5cm 11.32cm. Here are the options: a. 48 cm2 b. 48.11 cm2 c. 96.22 cm2 d. 32.07 cm2
is cold fusion science or pseudoscience
WHAT IS X^2+3X-10=0 IN SIMPLEST RADICAL FORM
Find the volume of the pyramid. h=8.5ft 10ft 10ft. a. 425 ft^3 b. 85 ft3^3 c. 850 ft^3 d. 283.33 ft^3 How do I do this problem?
Evidence of climate changes and conditions that affected early societies are gathered from _____.
What was the "Era of Good Feelings"? a time when Americans moved West a time when there was little political strife a time when Federalists held political power
What is a society ruled by religous leaders called?
what is 5/6 of 24 Help?
