This could be rephrased as:
You start with 100 grams of a substance. One year later you have 70 grams. What is the half-life?
We need this formula:
half-life = (time * natural log (2)) / natural log (beginning amount / ending amt)
half-life = (1 year * .69315) / natural log (100 / 70)
half-life = (.69315) / 0.35667494396
half-life = 1.9433661145 years
Rounding to nearest year half-life = 2 years
Sourse: https://www.1728.org/halflif2.htm
(See problem 3)
In this question, the weight is going with a pattern of
2 ; 4; 6; 8; 10
0.8 ; 1.4; 2.0; 2.6; 3.2
If you look at it closely, it is clear that the difference for each of them is 2 weeks and 0.6 pounds.
Because the question is asking for initial value, then you need to subtract the first number with the pattern. it would be: 0.8 pound- 0.6 pound= 0.2 pound
ANSWER
The required line is BC
EXPLANATION
We want to find the line that passes through

and has slope

Since the x-value of the given point is zero, the point

is the y-intercept.
From the above graph, the two lines that contains

are line CE and line BC.
Since, the slope

is negative, line BC is the required line because it is sloping backwards.
We can confirm this by using the point,

and

to find the slope and obtain
Answer:8 cm by 10 cm
Step-by-step explanation:
8*2+10*2=36
8*10=80
Answer:
y very likely equals 3
Step-by-step explanation:
X goes up by 1 and for every 1, the y gets divided by 3. Assuming the y for 0 is 243, then divide by 3 = (1,81) and so on, becoming (4,3).