Math Problem Statement

Find the value of (27 × 2^(-3))^(1/3) ÷ ((1/2) × 3)^(-2).

Solution

To solve the problem in the image, let's break down each part:

The question is asking for the value of: (27×23)13÷(12×3)2.(27 \times 2^{-3})^{\frac{1}{3}} \div \left(\frac{1}{2} \times 3\right)^{-2}.

Let's solve it step-by-step.

Step 1: Simplify (27×23)13(27 \times 2^{-3})^{\frac{1}{3}}

  1. Start by simplifying 27×2327 \times 2^{-3}:

    • 27=3327 = 3^3, so 27×23=33×23=(3×21)327 \times 2^{-3} = 3^3 \times 2^{-3} = (3 \times 2^{-1})^3.
    • Since 21=122^{-1} = \frac{1}{2}, this becomes (3×12)3=(32)3\left(3 \times \frac{1}{2}\right)^3 = \left(\frac{3}{2}\right)^3.
  2. Now, raise this expression to the power of 13\frac{1}{3}:

    • (32)3\left(\frac{3}{2}\right)^3 raised to 13\frac{1}{3} is 32\frac{3}{2} because 3×13=13 \times \frac{1}{3} = 1.

So, (27×23)13=32(27 \times 2^{-3})^{\frac{1}{3}} = \frac{3}{2}.

Step 2: Simplify (12×3)2\left(\frac{1}{2} \times 3\right)^{-2}

  1. Simplify inside the parentheses: 12×3=32\frac{1}{2} \times 3 = \frac{3}{2}.
  2. Now raise 32\frac{3}{2} to the power of 2-2:
    • (32)2=(23)2=49\left(\frac{3}{2}\right)^{-2} = \left(\frac{2}{3}\right)^2 = \frac{4}{9}.

So, (12×3)2=49\left(\frac{1}{2} \times 3\right)^{-2} = \frac{4}{9}.

Step 3: Divide the results

Now, we need to calculate: 32÷49.\frac{3}{2} \div \frac{4}{9}. To divide fractions, multiply by the reciprocal: 32×94=3×92×4=278.\frac{3}{2} \times \frac{9}{4} = \frac{3 \times 9}{2 \times 4} = \frac{27}{8}.

Final Answer

The correct answer is: 278.\boxed{\frac{27}{8}}.

So, the answer is option D.


Would you like more details on any part of this solution?

Here are 5 related questions you might be interested in:

  1. What is the general process for simplifying expressions with negative exponents?
  2. How do we simplify expressions with fractional exponents?
  3. Why do we multiply by the reciprocal when dividing fractions?
  4. What are some common mistakes to watch for with exponent rules?
  5. How can we apply these techniques to more complex algebraic expressions?

Tip: When working with fractional and negative exponents, rewrite each component in a simpler form first. This often makes it easier to handle the entire expression.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Exponents
Fractional Exponents
Negative Exponents
Division of Fractions

Formulas

Power of a Product: (a * b)^n = a^n * b^n
Negative Exponent: a^(-n) = 1/a^n
Fractional Exponent: a^(m/n) = (a^m)^(1/n) or (a^(1/n))^m
Division of Fractions: (a/b) ÷ (c/d) = (a/b) * (d/c)

Theorems

Properties of Exponents

Suitable Grade Level

Grade 10-11