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

The rain caused the river to rise a total of 6 2/3 inches. The river was rising at an average of 2/3 of an inch each hour. How many hours did it rain?
The group of large waterfalls that make up part of the US-Canadian border are called __________.
Why are command economies usually less efficient than market economies? Governments in command economy countries are uninterested in prices or quality. Command
A Daily Value of 10% means that
A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?
True or False: In terms of percent, whiskey has more alcohol than wine. True False
as water is cooled ,at what temperature do its particles become fixed on place?
Heat in a substance is an example of _____ energy?
By 1975, South Vietnam, Laos, and Cambodia had fallen to the communists. True or False?
I only regret that I have but one life to lose for my country was spoken by