(arithmetic sequences )
4. write the explicit formula for this sequence: 7.5,2,-3.5,-9

5.the recursive formula for an arithmetic sequence is [a1=-12] [an=an-1+5 ]
a)what is the 3rd term in the sequence?
b) if the 9th term is 28, what is the 10th term ?

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

step-by-step explanation:

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.