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A physicist working in a large laboratory has found that light particles traveling in a particle accelerator increase velocity in a manner that can be described by the linear function −4x + 3y = 21, where x is time and y is velocity in kilometers per hour. Use this function to determine when a certain particle will reach 50km/hr.

The particle will reach 50km/hr when x =

Respuesta :

Answer:

32.25

Step-by-step explanation:

-4x + 3y = 21

so at Y = 50

therefore, -4x + 3(50) = 21

-4x + 150 = 21

-4x = 21-150

-4x = - 129

x= 32.25 ( as minus on both sides cancel out each other)

Answer:

32.25 hours.

Step-by-step explanation:

-4x + 3y = 21

When the velocity y = 50 :

-4x + 3(50) = 21

-4x =  21 - 150 = -129

x = -129/-4

= 32.25 hours.

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