Final answer:
The product of the algebraic expression 5x + 20 and the multiplicative inverse of 5 (which is 1/5) results in x + 4, which is the standard form of the expression.
Step-by-step explanation:
The student is asking how to multiply an algebraic expression, 5x + 20, by the multiplicative inverse of 5 and then write the expression in standard form. The multiplicative inverse of 5 is 1/5. Multiplying the expression by this inverse would give us (5x + 20) × (1/5), resulting in x + 4, which is the standard form of the expression.
Here's the step-by-step calculation:
- Identify the multiplicative inverse of 5, which is 1/5.
- Multiply each term in the expression by the inverse: (5x × 1/5) + (20 × 1/5).
- Calculate the products: x + 4.
Following the rules listed, we know that multiplying two positive numbers or two negative numbers gives a positive result, and a positive multiplied by a negative gives a negative result. However, in this case, we're multiplying by the inverse, which doesn't change the sign of the terms in the expression.