a)
Let t represents number of years after 1900
so that means for 1900, value of t is 0
We are given point as (0,55)
and it says that life expectancy increases by 0.2
so that means slope,m=0.2
equation of line is y=mt +b
or y=0.2t +b
now we use point (0,55)
55 =0.2(0) +b
55 =0+b
55= b
so b=55
plug it back into the equation,we get
y=0.2t +55
b)
We are given y=73
so we plug it into the equation we got in part a and solve for t
y=0.2t +55
73 =0.2t +55
73-55 =0.2t
18 =0.2t
18/0.2 =t
90 =t
so t=90
This means the birth year =1900+t =1900+90 =1990
The pythagorean theorem works for all right triangles. Just make sure it IS a right triangle.
Answer:
Step-by-step explanation:
The formula for nth term of a the sequence is given as
<u>Finding the 10th term means finding , which means to plug in 10 into n, in the nth term formula.</u>
The answer would be 22.33 hope this helped
Answer:
Step-by-step explanation:
Rationalize the denominator, then use a common root for the numerator.