brxxzykxren13 brxxzykxren13

11-07-2019
Mathematics

contestada

Solve the proportion.8/d = -12/30
A. -45
B. -20
C. -3.2

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

11-07-2019

Answer:

B. -20

Step-by-step explanation:

8/d = -12/30

We can use cross products to solve

8 * 30 = d* -12

240 = -12 d

Divide each side by -12

240/-12 = -12d/-12

-20 = d

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