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 ( 92+ )
Otras preguntas
Help with Wuestion 5 please
What is the completely factored from of the expression 16x^2+8x+32?
Please answer CORRECTLY !!!!!! WILL MARK BRAINLIEST
It is difficult for societies to achieve all of the economic goals because... •consumers and business owners cannot agree on economic decisions •there are only
(9+x)(9-x) what is the product
Please help me now plz
Suppose a car rental company charges $22.50 plus 10 cents per mile write an equation you could solve to find how many miles you drove if the rental charge was 4
To save money for a sabbatical to earn a master’s degree, you deposit $2000 at the end of each year in an annuity that pays 7.5% compounded annually. a) How muc
What two countries were Poland's allies? Russia France Germany Great Britain
Draw the structure of DNA aand write a short note about it.
