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

The value of given expression is 27.1

C is correct

Explanation:

Given:
`(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 (1)/(2)\cdot 3^3+3.4* 4`

`\Rightarrow (1)/(2)\cdot 27+13.6`

`\Rightarrow (27)/(2)+13.6`

`\Rightarrow 13.5+13.6`

Add both number

`\Rightarrow 27.1`

Hence, The value of given expression is 27.1