Question

What is the value of 1/2 x3 + 3.4y when x = 3 and y = 4?
A 15.85
B 18.1
C 27.1
D 31.6

Answer 1

There is the answer , hope i helped!

Answer 2

Answer:

The value of given expression is 27.1

C is correct

Step-by-step explanation:

Given: $\dfrac{1}{2}x^3+3.4y$

We are given an expression of two variable x and y.

We need to find the value of expression at x=3 and y=4

Put x=3 and y=4 into expression and simplify

$\Rightarrow \dfrac{1}{2}\cdot 3^3+3.4\times 4$

$\Rightarrow \dfrac{1}{2}\cdot 27+13.6$

$\Rightarrow \dfrac{27}{2}+13.6$

$\Rightarrow 13.5+13.6$

Add both number

$\Rightarrow 27.1$

Hence, The value of given expression is 27.1