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 number of lightening strikes on a square kilometer of open ground in a year has mean 5 and standard deviation 2.1. The National Lightening Detection Network
help me. i don’t know weather my answers are correct, and i need help on the third question
If cells don't work together, what would happen to the organism? ​
Need rn! worth 30 Evaluate the function T(x)=19−x, when x=−3. a.) 57 b.) 22 c.) 16 d.) −16
Geologists in Antarctica find an average of 7 meteorite fragments in every 500 tons of gravel they sift through. How much gravel must they sift through in order
A. B. C. or D? .....​
omg help mr idk what to say ahhh​
. The value of the digit in the hundreds place in the number 653,841 is 1/10 the value of the digit in the thousands place in which number? 748,917 749,817 784,
An automobile manufacturer is preparing a shipment of cars and trucks on a cargo ship that can carry 21600 tons. The cars weigh 3.6 tons each and the trucks we
what are the first four multiples of the number 6