Question

2x−yz , where x=34 , y=−0.2 , and z = 6. Evaluate.

A) 0.3

B) 1.95

C) 2.7

Answer 1

When evaluating the expression 2x−yz with x=34, y=−0.2, and z=6, the result is 69.2. The provided answer options do not match this calculated value.

Step-by-step explanation:

The question provides an expression 2x−yz and the values for the variables: x=34, y=−0.2, and z=6. To evaluate the expression, we substitute the given values:

First, we calculate the product of y and z: y×z = −0.2×6 = −1.2.

Next, we multiply x by 2: 2×x = 2×34 = 68.

Finally, we subtract the product of y and z from 2x: 68 − (−1.2), which becomes 68 + 1.2 = 69.2.

Therefore, the value of the expression 2x−yz when x=34, y=−0.2, and z=6 is 69.2. None of the answer options provided (‘A’, ‘B’, ‘C’) match this correct answer.

Answer 2

The value of the expression 2x - yz, when x = 3/4, y = -0.2, and z = 6, is 2.7, the correct option is C.

Substitute the values of x, y, and z into the expression:

2(3/4) - (-0.2)(6)

Simplify the multiplication within the parentheses:

2(3/4) + 1.2

Multiply 2 by 3/4:

6/4 + 1.2

Simplify the fraction:

1.5 + 1.2

Add 1.5 and 1.2:

2.7

Complete Question:

Evaluate the expression 2x-yz , where x= 3/4 , y=-0.2 , and z=6

A) 0.3

B) 1.95

C) 2.7