gautreaupaige gautreaupaige
  • 20-07-2017
  • Mathematics
contestada

Find x
so the distance between
(x,4)
and
(2x-4,-5)
is
15

Respuesta :

Banabanana
Banabanana Banabanana
  • 20-07-2017
[tex](2x-4-x)^2 + (-5-4)^2 = 15^2\\ (x-4)^2 + (-9)^2 = 225\\ x^2 - 8x + 16 + 81 - 225 = 0\\ x^2 - 8x -128 = 0\\ x= \frac{8б \sqrt{(-8)^2-4*1*(-128)} }{2}=\frac{8б \sqrt{576} }{2}= \frac{8б 24 }{2}= \frac{2(4б 12) }{2}= 4б12 \\ x_1=4-12=-8 \\ x_2=4+12=16[/tex]
Answer Link

Otras preguntas

What came first, slavery or racism? Explain thoroughly.
This is an 4.4.5 draft explository essay rough draft for the advantage huckleberry please help so I can get my grade up
187.3 181.8 180.0 169.3 162.2 158.1 155.7 mean: median: mode:
For a sample of 42 rabbits, the mean weight is 5 pounds and the standard deviation of weights is 3 pounds. Which of the following is most likely true about the
125,000 in its what is the rmd
Find the 74th term of the arithmetic sequence -8, 0, 8, ...
Hair-like projections, called ________, trap dust, pollens, and other foreign matter and prevent it from entering the nasal cavity.
Which of the following is one of the main things to consider when evaluating a business opportunity? A. Customer demand for the product B. Style and entertainme
2. Explain why a negative number divided by a positive number has a negative quotient.
In the guinea pig short coat is dominate to long hair. If a short haired SS Guinean pig is crossed with a long haired as Guinean pig, what are the possible gene