For this case we must find the product of
By definition, the distributive property states that:
Then, according to the expression we have:
Answer:
Option C
Answer:
A) Exponential decay, 55% decrease
Step-by-step explanation:
The <em>b</em><em> </em>is less than 1, so that means it's decaying. Since <em>b</em><em> </em>= 0.45 and that the formula for an exponential decay is <em>a</em>(1- percent in decimal form)^x, all you have to do is find out what the decimal was BEFORE you subtracted it from 1.
So: 1 - x = 0.45
x = 0.55
0.55 = 55%
The element is remaining after 18 minutes with the rate of decaying of 26.8 % is 2.99 grams.
<h3>What is the percentage?</h3>
The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
An element with a mass of 820 grams decays by 26. 8% per minute.
Then the mass remaining after one minute will be
Remaining = 100 - 26.8
Remaining = 73.2 %
The element is remaining after 18 minutes will be
Mass = 820 × (0.732)¹⁸
Mass = 820 × 0.00364
Mass = 2.985
Mass ≈ 2.99
The element is remaining after 18 minutes is 2.99 grams.
More about the percentage link is given below.
brainly.com/question/8011401