We are given this explicit formula :

In order to find eighth term let us plug n as 8 in this formula:

subtracting 8-1 first using pemdas rule

multiplying 5 and 7

subtracting 35-6
c(8) = 29
So eighth term is 29.
120+4=124 cause if 20 +4=24 is just the same thing they just added a 1at the beginning
Adjacent angles create linear pairs so they add to 180. If we know the measure of one angle, we can find the other by subtracting from 180.
Vertical lines create congruent angles. If we know the measure of one angle, we know the measure of the angle opposite of it (they only share a vertex, no sides)
First we must convert these mixed numbers to improper fractions:


So then we need the product of these two numbers. That means to multiply:

But then we need the value of half of this product. So then let's multiply by one-half:

Then we can convert this from an improper fraction to a mixed number:

And so this number is half of the product of the initial two numbers.
The answer is B, 10.
Step-by-step explanation: You plug in the values where the variables are, then follow PEMDAS, beginning with 5 times 3.