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

Find an equivalent mixed number for the decimal number. 2.64
What part of the nervous system is most affected by fatal familial insomnia?
Which statement about the greenhouse effect is NOT true? A) The greenhouse effect keeps Earth from becoming too hot during the day. B) The greenhouse effect cau
List at least three (3) characteristics of carbon that make it a unique element.
What was your annual gross income (before taxes) last year? $_____?
Q 8.20: foti co. accepts a $1,000, 3-month, 12% promissory note in settlement of an account with bartelt co. the entry to record this transaction is as follows:
Which conclusion is best supported by Julie’s observations? A. The liquid is a pure substance because it is colorless. B. The liquid is a mixture because its t
According to the map, the largest empire in 1812
Write a paragraph identifying the system that is the subject of chief justice of comments and explaining his ideas about how the system relates to Native Americ
What countries coal industries shut down during ww2?