trinity509 trinity509

22-06-2020
Mathematics

contestada

What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3? y = 5 y = 6 y = 8 y = 9

Respuesta :

maxwellekoh maxwellekoh

22-06-2020

Answer:

9

Step-by-step explanation:

6.4x + 2.8y = 44.4

x=3, substituting it in the expression above we have :

6.4(3) + 2.8y = 44.4

19.2 + 2.8y = 44.4

2.8y = 44.4 -19.2 = 25.2

y = 25.2 / 2.8 = 9

Answer Link

mhanifa mhanifa

22-06-2020

Answer:

y=9

Step-by-step explanation:

6.4x + 2.8y = 44.4

x=3, y=?

6.4*3+2.8y= 44.4
2.8y= 44.4- 19.2
2.8y= 25.2
y= 25.2/2.8
y= 9

Answer Link

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