3i is not equivalent to 3 because i is representative for the square root of -1. In reality it is 3(square root of -1) and 3 .
FV = 125*(1 + 0.08)^16 = $428.24
<span>0.08*16 = 1.28 </span>
<span>a(16) = 125*e^1.28 = 125*2.718281828^1.28 = 449.58</span>
It should be D, I did the math :)
I'll assume that what was meant was
.
The exponent in the funny place is just an abbreviation:
.
I hope that's what you meant. Let me know if I'm wrong.
Let's start from the old saw
Squaring both sides,
So now the original question
becomes
Now we use the sine double angle formula
We square it to see
Taking the square root,
Not sure how you want it; we'll do it in degrees.
When we know the sine of an angle, there's usually two angles on the unit circle that have that sine. They're supplementary angles which add to
. But when the sine is 1 or -1 like it is here, we're looking at
and
, which are essentially their own supplements, slightly less messy.
That means we have two equations:
integer
or
We can combine those for a final answer,
integer
Check. Let's just check one, how about
Answer:
Step-by-step explanation:
You need to use this formula:
Where is the nth] term, is the first term,"n" is the term position and "d" is the common diference.
You must find the value of "d". Substitute , and into the formula and solve for "d":
Now, you can calculate the 25th term substituting into the formula these values:
and
Then you get: