Answer:
Answer: In year 2107 life expectancy will be 130 years
Step-by-step explanation:
First we understand which are the things given in the question.
In every decade life expectancy gains over 5.1 years.
Current life expectancy is about 80 years.
We have to calculate in how many decades life expectancy will increase from 80 years to 130 years which means increase of 50 years.
So from unitary method we can do the calculations.
∵ 5.1 years of life expectancy increases = in one decade
∴ 1 year of life expectancy will increase in = decades
∴ 50 years of life expectancy will increase in =×50 decades
= decades
or 9.8×10 years = 98 years
Therefore 130 years life expectancy will be in in year 2009+98 years =2107
The answer
<span>to eliminate t from the parametric equations x=t^2+3 and y=4t
we have t²= x-3, and then t= sqrt(x-3), but we know that y=4t, which implies t=y/4. We only substitute the value of t by y/4, so </span>t= sqrt(x-3) wich is equivalent to y/4=sqrt(x-3), so at last y= 4 sqrt(x-3). t exactly eliminated.
so the true answer is
<span>D)She should first substitute y for t before solving.</span>
4x + 1. Coefficient just means the number on the x and a constant means just a number by itself with no variable
For every centimeter that is drawn, it corresponds to 1 meter in real.
Knowing that every meter has 100 centimeters:
1:100
Answer:
50
Step-by-step explanation:
add 5 to -25 to get -2/5x by itself.