Answer:
162
Step-by-step explanation:
Half-life = [elapsed time * log (2)] / [log (begng amt / endg amt)]
half-life = (3 days * 0.30102999566) / log (1 / .58)
<span>half-life = 0.903089987 / log </span>
(<span>
<span>
<span>
1.724137931)
</span></span></span>half-life = <span>0.903089987 / 0.23657200643</span>
half-life =
<span>
<span>
<span>
3.8174 days
Source:
http://www.1728.org/halflife.htm
</span></span></span>
40% = 0.40
20 * 0.40 = 8
Solution: you answered 8 incorrectly
Answer:
5280
Step-by-step explanation:
I'm American and our system sucks but 1 mile is equal to 5280 feet
May I have brainliest please? :)
The perimeter of a shape is the sum of its side lengths
Becca, Lucas, and Christian are correct
<h3>How to determine the correct perimeter</h3>
The side lengths of the triangle are x, 3x - 4 and 3x - 4
So, the perimeter (P) is:
P = x + 3x - 4 + 3x - 4
The above equation can be rewritten as:
P =2(3x - 4) + x
P = 6x + x - 4
P = (3x - 4) + (3x - 4) + x
P = 7x - 4
Hence, Becca, Lucas, and Christian are correct
Read more about perimeter at:
brainly.com/question/17297081