## anonymous one year ago What is the value of 1/3x to the second power + 5.2y when x = 3 and y = 2? 12.4 13.4 14.4 16.4

1. mathstudent55

You mean this problem? Evaluate $$\dfrac{1}{3}x^2 + 5.2y$$ for $$x = 3$$ and $$y = 2$$.

2. mathstudent55

The first step is to write the expression with x replaced by 3 and y replaced by 2. $$\dfrac{1}{3}x^2 + 5.2y =$$ $$=\dfrac{1}{3}(3^2) + 5.2(2)$$ Can you evaluate that expression? Remember PEMDAS, the order of operations.

3. mathstudent55

$$\dfrac{1}{3} \times 3^2 + 5.2 \times 2$$ $$= \dfrac{1}{3} \times 9 + 10.4$$ $$= 3 + 10.4$$ $$= 13.4$$