mosope39
mosope39 mosope39
  • 03-08-2021
  • Mathematics
contestada

if √x-5 varies directly as y and x=30 when y= 2, find the value of x when y=8.​

Respuesta :

Аноним Аноним
  • 05-08-2021

Answer:

let,

√x-5=ky

x=30 when y=2

√30-5=2k

or, k=(√30-5)/2

now, when y=8

√x-5=8×(√30-5)/2

or, √x-5=4√30-20

or, √x=4√30-15

or, x=(4√30-15)²

or, x=47.73..

Answer Link

Otras preguntas

which expression is equevelent to x² -17 X -60?
Which element provides strength to bones?
The Cartesian coordinates of a point are given. (a) (−5, 5) (i) Find polar coordinates (r, θ) of the point, where r > 0 and 0 ≤ θ < 2π. (r, θ) = (ii) Find
What is the vertex of this quadratic function? f(x) = x2 – 4x – 5
Which service is provided by the National Teen Dating Abuse Online Helpline?
What is the area of this triangle? help pls im failing haha
What is the vertex of this quadratic function? f(x) = x2 – 4x – 5
1. ich bin froh. ihr kommt vorbei. (wenn) a. ich bin froh, wenn ihr vorbeikommt. b. ich bin froh, wenn kommt ihr vorbei. c. ich bin froh, wenn vorbei ihr kommt
1/4 + 1/2 divided by 3/8 I need the answer IMMEDIATELY!!! or im gonna get grounded ;-;
Evaluate: D=5, E=-6, and F+=-2 14+2|f|