maddiermz9588 maddiermz9588
  • 26-08-2017
  • Mathematics
contestada



One positive integer is 7
less than twice another. The sum of their squares is 433. Find the integers

Respuesta :

Sherlock22122
Sherlock22122 Sherlock22122
  • 27-08-2017
You use a system of equations to solve this.
x will be one integer and y will be the other.

2y - 7 = x
x^2 + y^2 = 433

You can plug (2y - 7) in for x in the second equation.

(2y - 7)^2 + y^2 = 433
4y^2 - 28y + 49 + y^2 = 433
5y^2 - 28y -384 = 0
y = 12 or -32/5

It has to be 12 since -32/5 is not an integer.

Plug 12 in for y to get x.

2(12) - 7 = x
x = 17

The integers are 12 and 17.
Answer Link

Otras preguntas

why is wet bandage placed on a forehead of a person suffering from high fever?.
What does this example of personification mean?"The funeral raced by me in a blur."
The volumes of two similar cones are 36π cm3 and 288π cm3. The base radius of the smaller cone is 3 cm. Calculate the base radius of the larger cone.
What were some key Characterstics of Gupta rule?
what is the solution to the proportion? 9/x=4/12 Answers: A. 13 B. 27 C. 17 D. 3
1. Carbon dioxide is mainly stored in what two parts of our planet?2. What has recently caused atmospheric carbon dioxide to increase?3. List 2 similarities an
why is no dew formed on a windy day or when the sky is cloudy?
What does this example of personification mean?"The funeral raced by me in a blur."
Combine like terms to simplify the expression:     7x + 3y – 2 + 6x – 1 – y2  A.–2y3 + 13x – 3  B.–y2 + 3y + 13x – 3  C.–y2 + 3y + 42x2 –3  D.–3y3 + 13x2 – 3
subtract and simplify10/w -1/3