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

Is 0.127 a rational number
Who was the so-called new middle-class? What was the role of expertise and organization in this new professionalism?
hey guys i know this seems long but i really need the help so plzz]Step 1: Write five word phrases to be translated using the various key terms from the lesson.
placing 12 tiles side by side, Pete can make a 12-by-1 rectangle. Name two other rectangles Pete can make with 12 tiles
what is 69/25 as a terminating decimal
help me the area of a rectangular roof of a doghouse is 756 square inches. the length of the roof is 108 inches. how many inches wide is the roof? show the math
1/7(x+21)=-6 answer ?
What are the natural resources in venice,italy?
The ocular and objective lenses are found at the top and bottom of what part of a microscope?
Explain how you would use a number line to find 6+(-8)