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Simplify the expression without a calculator $$ 5\left(\frac{3}{4}\right)^{0} $$

Short Answer

Expert verified
The simplified expression is 5.

Step by step solution

01

Understanding the Problem

We need to simplify the mathematical expression \( 5\left(\frac{3}{4}\right)^{0} \). The expression involves a fraction raised to the power of zero.
02

Identifying Key Concepts

Recall the property of exponents that any non-zero number raised to the power of zero is equal to 1. This is a fundamental rule of exponents.
03

Applying the Zero Exponent Property

Apply the zero exponent property. Since the fraction \( \frac{3}{4} \) is raised to the power of zero, it simplifies to \( 1 \). Thus, \( \left(\frac{3}{4}\right)^{0} = 1 \).
04

Simplifying the Expression

Now that the fraction raised to zero simplifies to 1, substitute it back into the expression: \( 5 \times 1 \).
05

Final Calculation

Multiply \( 5 \times 1 \), which equals 5. Therefore, the simplified expression is \( 5 \).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Zero Exponent Rule
The Zero Exponent Rule is a key concept in mathematics, especially when working with exponents in expressions. It states that any non-zero number raised to the power of zero equals one. This can be confusing at first, but it's a powerful rule that simplifies expressions greatly. For example, if you have an expression like \( x^0 \), where \( x \) is any non-zero number, the result will always be 1.
In our example, the fraction \( \frac{3}{4} \) is raised to the zero power. According to the zero exponent rule, \( \left(\frac{3}{4}\right)^0 = 1 \). This part of the expression becomes insignificant, simplifying the work significantly. Remember:
  • Any non-zero base to the zero power equals 1.
  • Zero to the zero power is undefined.
  • The rule makes simplifying expressions easier by reducing unnecessary components.
Simplifying Expressions
Simplifying expressions is all about making them easier to work with and understand. This involves using mathematical rules, like the zero exponent rule, to break down expressions into more manageable parts.
In a given expression, identify parts that can be simplified based on known rules. For example, after applying the zero exponent rule to \( \left(\frac{3}{4}\right)^0 \), it simplifies to 1. The expression then becomes \( 5 \times 1 \).
Following these steps depends on:
  • Knowing and applying exponent rules properly.
  • Reducing the complexity by minimizing unnecessary components.
  • Ensuring calculations are precise by substituting equivalent values.
Simplification often involves:
  • Combining like terms.
  • Applying basic arithmetic operations.
  • Using algebraic identities and properties like distributive property.
These methods transform complicated expressions into simpler forms, ensuring easier calculations or transformations.
Fractional Exponents
Fractional exponents may seem intimidating, but they follow simple rules similar to whole number exponents. A fractional exponent, such as \( a^{1/n} \), is another way of expressing roots. Here, \( n \) would be the root; \( a^{1/2} \) would mean the square root of \( a \).
They provide a flexible notation for handling roots more efficiently in complex expressions involving both powers and roots. For instance:
  • \( a^{m/n} \) can be rewritten as \( \sqrt[n]{a^m} \).
  • This symbolizes raising \( a \) to a power \( m \) and then taking the \( n^{th} \) root.
Fractional exponents make certain operations and equations easier to manage by turning roots and powers into a single operation that fits neatly into algebraic structures.
By understanding fractional exponents, you can:
  • Transform complex root expressions into simpler exponential forms.
  • Enhance clarity and simplicity in calculations.
  • Expand your ability to solve a broad range of algebraic problems involving powers and roots.
While our specific problem did not involve fractional exponents directly, grasping this concept is essential for deeper understanding of algebra and exponent manipulation.

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Most popular questions from this chapter

Near New Guinea there is a relationship between the number of bird species found on an island and the size of the island. The table lists the number of species of birds \(y\) found on an island with an area of \(x\) square kilometers. $$\begin{array}{rccccc}x\left(\mathrm{km}^{2}\right) & 0.1 & 1 & 10 & 100 & 1000 \\ \hline y \text { (species) } & 10 & 15 & 20 & 25 & 30\end{array}$$ (a) Find a function \(f\) that models the data. (b) Predict the number of bird species on an island of 5000 square kilometers. (c) Did your answer involve interpolation or extrapolation?

The table lists the atmospheric density \(y\) in kilograms per cubic meter \(\left(\mathrm{kg} / \mathrm{m}^{3}\right)\) at an altitude of \(x\) meters. $$\begin{array}{ccccc} x(m) & 0 & 5000 & 10,000 & 15,000 \\ y\left(k g / m^{3}\right) & 1.2250 & 0.7364 & 0.4140 & 0.1948 \end{array}$$ $$\begin{array}{rllll} \boldsymbol{x}(\mathrm{m}) & 20,000 & 25,000 & 30,000 \\\ y\left(\mathrm{kg} / \mathrm{m}^{3}\right) & 0.0889 & 0.0401 & 0.0184 \end{array}$$ (a) Find a function \(f\) that models the data. (b) Prodict the density at 7000 meters. (The actual value is \(.0.59 \mathrm{kg} / \mathrm{m}^{3} .\))

Hurricanes Hurricanes are some of the largest storms on earth. They are very low pressure areas with diameters of over 500 miles. The barometric air pressure in inches of mercury at a distance of \(x\) miles from the eye of a severe hurricane is modeled by the formula \(f(x)=0.48 \ln (x+1)+27\) (a) Evaluate \(f(0)\) and \(f(100)\). Interpret the results. (b) Graph \(f\) in \([0,250,50]\) by \([25,30,1] .\) Describe how air pressure changes as one moves away from the eye of the hurricane. (c) At what distance from the eye of the hurricane is the air pressure 28 inches of mercury?

Decibels (Refer to Example 2.) Use the formula \(D(x)=10 \log \left(10^{16} x\right)\) to determine the decibels when the intensity of a sound is \(x=10^{-1 / 2}\) watt per square centimeter.

Solve each equation. Use the change of base formula to approximate exact answers to the nearest hundredth when appropriate. $$e^{-x}=3$$

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