laurenlibat
laurenlibat laurenlibat
  • 02-06-2019
  • Mathematics
contestada

Solve the equation for x.

the square root of the quantity x minus 8 end quantity plus 2 equals 7

A. x=1
B. x=13
C. x=17
D. 33

Respuesta :

ToastedMiso
ToastedMiso ToastedMiso
  • 02-06-2019

Answer:

D. 33

Step-by-step explanation:

√(x-8) + 2 = 7

subtract 2 from both sides

√(x-8)  = 5

square both sides

(√(x-8))²  = 5²

x-8 = 25

add 8 to both sides

x = 33

Answer Link
kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 02-06-2019

ANSWER

D. 33

EXPLANATION

The given radical equation is

[tex] \sqrt{x - 8} + 2 = 7[/tex]

Group similar terms,

[tex]\sqrt{x - 8} = 7 - 2[/tex]

[tex]\sqrt{x - 8} = 5[/tex]

Square both sides:

[tex] {(\sqrt{x - 8})}^{2} = {5}^{2} [/tex]

Simplify

[tex]x - 8 = 25[/tex]

Solve for x

[tex]x = 25 + 8 = 3[/tex]

Answer Link

Otras preguntas

The diagram shows a patio in the shape of a rectangle. The patio is 3.6m long and 3m wide. Mathew is going to cover the patio with paving slabs. Each paving sla
Explain why the current is reduced as electrons move through a conductor.
What are good book to read from war times about family / adoption / giving up of children
NaOH  + H2SO4 =NaOH + HNO3  =Cu(OH)2 + HCl =                H2SO4 =                        HNO3 =
How do you do this algebra question
In little Marsden the population is 17 222. The men and women together total 9142 and the women and children together total 13 201. There are ...... Women There
Why was there growing involvement of the USA in Europe in the years 1945-48 ??
what is the cubic root of - 250
What is HIV and the causes
What long-term effect do you think EU membership will have on nationalism in Europe? Explain.