Q. If 3x−y=12, what is the value of (8x)/(2y) ?A) 212B) 44C) 82D) The value cannot be determined from the information given.
Given Equation: We are given the equation 3x−y=12 and asked to find the value of (8x)/(2y). First, let's simplify the expression using properties of exponents.
Simplify Expression: Recall that 8 can be written as 23. So, 8x can be rewritten as (23)x which simplifies to 23x using the property of exponents that states (ab)c=ab∗c.
Apply Exponent Properties: Now, we have the expression 23x/2y. Using the property of exponents that states am/an=am−n, we can simplify this to 23x−y.
Substitute in Equation: Given the equation 3x−y=12, we can substitute 12 for 3x−y in our expression. This gives us 212.
Final Value: Therefore, the value of (8x)/(2y) given the equation 3x−y=12 is 212, which matches option A.
More problems from Evaluate expression when two complex numbers are given