Answer:
If this trend continues, life expectancy will be 73 years in the year 1990
Step-by-step explanation:
Hi
first of all, we build a model with the knowns of the problem, so we have 
in years after 1900, then we have
as we isolate for 
, 
, finally, we obtain that the birth year which the average life expectancy will be 73 years is 1990
Answer:
<h2>∠DBE = 105°</h2>
Step-by-step explanation:
Angles on one side of a straight line always add to 180°.
Therefore we have the equation:
<em>combine like terms</em>
<em>subtract 20 from both sides</em>
<em>divide both sides by 4</em>
∠DBE = 3x - 15. Substitute:
Solution: A scatter plot is made to model the number of calories in different portions of fish sticks. The data used for the scatter plot are shown in the table below:
Number of portions
5 3 8 6 1 4
Number of calories
250 150 400 300 50 200
What does the slope of the model represent?
Answer: The number of calories in each portion of fish sticks
<span>x decreases from 12 to 0
y increases from 0 to 12
sine increases from 0 to 1
cosine decreases from 1 to 0
tangent increases from 0 to infinity</span>
Answer:
see explanation
Step-by-step explanation:
These are the terms of a geometric sequence with n th term
= a
Where a is the first term and r the common ratio
r = 
= 
= 
= 2
and a = 5, hence explicit equation is
= 5
