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

You draw a card from a deck. If you get a red​ card, you win nothing. If you get a​ spade, you win ​$5. For any​ club, you win ​$10 plus an extra ​$15 for the a
Whats the best sum out of 8,6,7,5 for 4 2/7 + 1 8/9
30 POINTS! Consider the system of linear equations and the matrix equations below. What is the value of x in the equation?
When Point E (-9, 3) is rotated 270° counterclockwise about the origin, it becomes Point E’ (3, -9). true or false?
How to make s the subject in T=2(S+P)÷Z
What is true of a covalent bond? (03.03) It is the electrostatic attraction between oppositely charged particle It is the sharing of electrons by overlapping or
What is the y-intercept of the graph of the function f(x) = x2 + 3x + 5? (0,-5) 10 (0, -3) (0,3) (0,5)
George starts with a number. He takes away 7, then squares it, adds 6, subtracts 13, multiplies it by 4 and subtracts 1. He ends up with 7. What was George’s or
If the earth were twice the distance from the sun that it is now, the gravitational force exerted on it by the sun would be:
Convert the radian measure to degrees. (Round to the nearest hundredth when necessary): 7π/3