PLEASE HELP! Will mark brainliest, The sum of three consecutive numbers is 84. What is the largest of these numbers?
26
27
28
29

29

Step-by-step explanation:

27 + 28 + 29 = 84

D

Step-by-step explanation:

Let the first number be n.

Then the consecutive number will be (n+1).

And the second consecutive number will be (n+2).

We know that it totals 84. So, we can write the following equation:

Let’s now solve for n. Combine like terms:

Subtract 3 from both sides:

Divide both sides by 3:

So, our n or first term is 27.

This means that our sequence is: 27, 28, and 29.

So, our largest number is 29.

Hence, our answer is D.

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: