Determinati x apartine lui r stiind ca x+1,x+4si x+7 reprezinta lungimile laturilor unui triunghi dreptunghic

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?