I've got a couple questions I could use some help on 50 point reward

1. Find the 9th term of this sequence.

27, 9, 3, 1, ...

A.) -1/3
B.) 1/243
C.) 0
D.) -1/234

2. Find the first five terms of the sequence given the following recursive formula: a_1 = 8 and a_n = 10 - 3a_n-1, for n is greater than or equal to 2

3. What is the 9th term in the geometric sequence in which a_3 is 36 and a_6 is 972?

4. Find the next two terms of the following sequence: -21, -9, 11, 39, ...

5.
Use the explicit formula, a_n = (-1)^n(13n-6) , to find the first five terms of the sequence.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey

step-by-step explanation:

hihi so drawing these 2 triangles is fairly simple. all that's left is finding the height of each one. luckily, we have a side length and an angle, so there is a trig function we can use to solve for the height. the easiest one to use would be tangent, since we have 2/3 things needed to find and the third needed is what we are solving for. tan(73°) * 30 ~= 98.13 and tan(73°) * 35 ~= 114.45