Offering brainliest. if anyone would be willing to solve this, that would be fantastic.

Step-by-step explanation:

The partial sum of an arithmetic sequence is: where a1 is the first term, an is the nth term, and Sn is the partial sum of up to the nth number in the series. Let's apply the formula.

The first term, a1 is:

a1 = 2/3 (1) + 5/6 = 2/3 + 5/6 = 3/2

The nth term is an = 2/3 n + 5/6

The formula should be:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!