What is the value of the expression 1 – r – a when r = 20 and a = 6?
2 answers:
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Answer:
(Real Number) or
(Scientific Notation)
Concepts:
- - Order of Operations
Parenthesis: ( )
Exponents: x²
Multiplication: ×
Division: ÷
Addition: +
Subtraction: -
Step-by-Step Solution:
Simplify exponents and square roots
278,800,000
Why learn this:
- Order of operations is a basic rule of algebra. It tells us what to solve first when we have an equation with multiple functions, which is something that you will likely encounter throughout your math studies. The order is: Parentheses, Exponents, Multiplication and Division, then finally Addition and Subtraction. Remember that when you're solving within the parentheses, the Order of Operations applies!
Terms and topics
- Order of operations
The exponential equation that correctly models the ball's peak height, h, in meters, after b bounces is given by:
A decaying exponential function is modeled by:
In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
In this problem:
- Rocio drops a ball from a height of 4 meters, hence A(0) = 4.
- Each time the ball bounces, it reaches a peak height which is 79% of the previous peak height, hence 1 - r = 0.79.
Thus, the equation is given by:
More can be learned about exponential equations at brainly.com/question/25537936