pettygirl13 pettygirl13

29-01-2019
Mathematics

contestada

y varies inversely with x. if y =40 when x =16, find x when y =-5

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

09-02-2019

Answer:

x = -128

Step-by-step explanation:

y varies inversely with x.

xy = k

if y =40 when x =16

40 *16 = k

640 = k

xy = 640

We need to find x when y =-5

x (-5) = 640

Dividee each side by -5

x (-5)/-5 = 640/-5

x = -128

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