Answer:
Step-by-step explanation:
The nth term of an arithmetic sequence is given by the formula,
We were given that the 9th term is 
.
The sum of the first n-terms is given by the formula,
To find 
, we substitute 
, 
and 
.
The correct answer is D
Answer:
it is a because you subtract the ten from both side and that makes the -8 into a -18 then you divide by 3 and your answer is -6
The formula for a diagonal of a rectangle is <span>√w^2+h^2, with w and h being the width and height. Plug in your numbers to get </span><span>√7^2+5.5^2. Simplify that into </span><span>√49+30.25, then to </span><span>√79.25. Use your calculator to get 8.9022. The diagonal is 8.9 feet.</span>
3! =3 x 2 x 1 = 6
Y!= Y x (y-1) x ... x 1=
The answer is D. I graphed it on this website called desmos. The solution is where the lines intersect.
