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

Does an owl have a backbone?
The ______ was established in 1943 to assist in the transition from a peacetime to a wartime economy ?
What's 5 divided by x squared explain
Forget the motor When im on the boat Think of the best time To buy a new coat What am I......?
find the sum. write each mixed number in simplest form 4 7/8 + 5 1/4
a lunch bill including tax, is divided among you and 5 friends. everyone pays less than $8.75. write and solve an inequality that describes the total amount of
Does an owl have a backbone?
Does an owl have a backbone?
A blue rope is 3 times the length as a red rope. A green rope is 5 times as log as the blue rope of the total length of all 3 ropes equals 508.25m what is the l
What all the multiples of 81?