goldeneagle1
goldeneagle1 goldeneagle1
  • 03-12-2018
  • Mathematics
contestada

The variables y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?

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jimrgrant1 jimrgrant1
  • 03-12-2018

Answer:

x = [tex]\frac{4}{5}[/tex]

Step-by-step explanation:

since the variables are in proportion then the equation relating them is

y = kx ← k is the constant of proportionality

to find k use the given condition, y = 15 when x = 3

k = [tex]\frac{y}{x}[/tex] = [tex]\frac{15}{3}[/tex] = 5, hence

y = 5x ← is the equation relating x and y

when y = 4, that is

5x = 4 ( divide both sides by 5 )

x = [tex]\frac{4}{5}[/tex]





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savanna5475
savanna5475 savanna5475
  • 19-12-2019

Answer:

0.8 You probably dont need the anymore but other ppl might.

Ver imagen savanna5475
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