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

Write out at least three steps on how you solve for side AB
Work out the value of 1 squared 2 cubed 3 to the power of 4
a ____is a part of an experiment that does not change.
Base your answers on the diagrams below of two cells, X and Y, and on your knowledge of biology. Select one lettered organelle and write the letter of that org
+ Round 26 to the nearest 10. Round to 20 20 21 22 23 Round to 30 23 24 25 26 27 28 29 + 30 = answer??​
give an example not illustrating popular sovereignty
Summarize this paragraph: The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body.
Find the equation of straight line passing through the point of intersection of the lines 3x y-6 and x-y=2 and point (-1,3
How can two people have completely different personalities from each other? Support your argument with logical examples from your knowledge of Allport’s’ Trait
Simplify the polynomial, then evaluate for x = 2. x+3x²+2x-3-4x² +6 Ox² + 3x + 3; 5 -x² + 3x +9; 11 x² + 3x + 3; 13 x² + 3x +9; 19 O O