The 1st row has 15 chairs.
The 2nd row has 15 + 3 = 18 chairs.
The 3rd row has 18 + 3 = 15 + 2•3 = 21 chairs.
The 4th row has 21 + 3 = 15 + 3•3 = 24 chairs.
The pattern continues, so that the n-th row has 15 + (n - 1)•3 = 3n + 12 chairs.
If there are 15 rows, then the total number of chairs is

where we use the formulas


Answer:
10.7 would be the distance between the 2.
Explanation:
First, you have to get rid of the negative and add 7.2 and 3.5, this would get you 10.7 which will be the distance between the 2.
Answer:
In a balanced chemical equation the number of individual particles and the number of moles of particles are represented by the <em>COEFFICIENTS</em><em> </em>
Explanation:
Please mark me brainliest
A and B
The other answers do not correctly use a semi-colon because the semicolon acts as a period that connects two closely related clauses.
Answer:
The answer is D, The Puritans were enraged.
Explanation: