Problem

Multiply (322(1-(1+0.042)^-60))/0.042

This question presents a mathematical expression that requires one to perform a series of operations to arrive at a solution. Specifically, the task is to multiply a certain number, 322, by the result of subtracting the result of another operation from 1. The inner operation involves taking 1 plus 0.042 to the negative 60th power (which implies using the formula for a geometric series or compound interest). Finally, this result is further subtracted from 1, and the outcome is divided by 0.042 before being multiplied by 322. The overall expression appears to be related to financial calculations, perhaps calculating the present value or payment of an annuity at a certain interest rate.

322(1((1+0.042))60)0.042

Answer

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Solution:

Step 1: Simplify the Numerator

  • Step 1.1: Combine 1 and 0.042 to form 1.042 in the expression 322(1(1.042)60)0.042.

  • Step 1.2: Apply the negative exponent rule, which states bn=1bn, to rewrite the expression as 322(11(1.042)60)0.042.

  • Step 1.3: Calculate (1.042)60 to find its value, which is 11.80492243, and update the expression to 322(1111.80492243)0.042.

  • Step 1.4: Compute the division of 1 by 11.80492243 to get 0.08471042 and modify the expression to 322(110.08471042)0.042.

  • Step 1.5: Perform the multiplication of 1 by 0.08471042 to obtain 0.08471042.

  • Step 1.6: Subtract 0.08471042 from 1 to get 0.91528957 and then multiply by 322 to simplify the numerator, resulting in 3220.915289570.042.

Step 2: Simplify the Expression

  • Step 2.1: Multiply 322 by 0.91528957 to get 294.72324305.

  • Step 2.2: Divide 294.72324305 by 0.042 to obtain the final result, which is 7017.22007268.

Knowledge Notes:

To solve the given problem, we need to understand several mathematical concepts:

  1. Negative Exponents: The rule for negative exponents states that bn=1bn. This means that a number raised to a negative exponent is equal to the reciprocal of that number raised to the positive exponent.

  2. Exponentiation: Raising a number to a power is a form of exponentiation. For example, bn means multiplying the base b by itself n times.

  3. Arithmetic Operations: Basic arithmetic operations include addition, subtraction, multiplication, and division. These operations are used in sequence to simplify expressions.

  4. Order of Operations: When simplifying mathematical expressions, it's important to follow the correct order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

  5. Simplifying Fractions: To simplify a fraction, you perform the division of the numerator by the denominator. This can involve multiplication or division of large numbers or decimals.

In this problem, we applied these concepts to simplify the given expression step by step, ensuring that we followed the order of operations and correctly applied the rules for negative exponents and arithmetic operations.

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