Respuesta :
An equation is formed of two equal expressions.The value of y in the equation 5x + 2y = 20, when x = 0.3 is 9.25. The correct option is C, 9.25.
What is an equation?
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
The value of y in the equation 5x + 2y = 20, when x = 0.3 can be found by substituting the value in the equation.
5x + 2y = 20
Substitute the value of x,
5(0.3) + 2y = 20
1.5 + 2y = 20
Subtract 1.5 from both sides of the equation,
1.5 + 2y - 1.5 = 20 - 1.5
Divide both the sides of the equation by 2,
2y /2 = 18.5 /2
y = 9.25
Hence, the value of y in the equation 5x + 2y = 20, when x = 0.3 is 9.25.
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