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 chemical formula of lithium carbonate is Li2CO3. Which statement below best describes the types and number of atoms of each element making up this substance
the product of a number,x, and 6 is less than 36. Find all possible values for the number.
In most cases, researchers have found that relationships between aging parents and their children are characterized by _____. anger ambivalence apathy abuse
What is the essential question
Cracks in rocks widen as water in them freezes and thaws. How does this affect the surface of the Earth? A It reduces the rates of soil formation. B It chang
What is the physical composition of vermiculite?
A ---- property of matter describes its ability to change into different substances. fill in the blank.
Information systems are products and like other products, they must satisfy their ________.
_________ is a continuous series of mutations and variations over time that results in a new species.
5. What does etymology mean? A. the history and origin of words B. the study and discussion of the mind C. the record of prehistoric times D. the analysis