ematthewsjr6800 ematthewsjr6800
  • 01-09-2017
  • Mathematics
contestada

When asked his age, the algebra teacher said, “if you square my age, then subtract 23 times my age, the result is 50.” how old is he?

Respuesta :

Аноним Аноним
  • 01-09-2017
Let the age be x.

Given,

[tex] x^{2} - 23x = 50[/tex]

[tex] x^{2} - 23x - 50 = 0[/tex]

[tex] x^{2} - 25x + 2x - 50 = 0[/tex]

[tex] x(x -25)+2(x-25)=0[/tex]

[tex](x+2)(x-25)=0[/tex]

Hence, x = -2 or 25.

Since, the age of the teacher cannot be in negative, the age of the teacher is 25 years.

Answer Link

Otras preguntas

A race car maintains constant acceleration as its velocity increases from 40 m/s to 120 m/s over a 20 s interval.
(-x^2-x+3)+(-x-1) simplify
convert 32 gallons per minute to 32 quarts per hour
which postulate or theorem could be used to prove triangleLMQ is congruent to triangleLNP
In an essay of at least three well-developed paragraphs, (a) explain one economic difficulty for people traveling and conducting business between countries, and
La estudiante ______ ( hablar) con el maestro
What enables the country to grow the crops that it does
how does the author convey theme? writing technique:... Questions:...
Pizza place sold 93pizzas on monday 67 on Tuesday 78 on Wednesday 44 on Thursday and 123 on friday how many pizzas was sold per day
What enables the country to grow the crops that it does