3 years ago

Which go with which

Mathematics

1 answer:

katrin2010 [14]3 years ago

5 0

Answer:

There are 88 adults and 132 children

Step-by-step explanation:

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Set 1: 21, 24, 36, 38, 40, 42, 44, 63, 85

Aleksandr-060686 [28]

Answer:

set 1 : 23.5

set 2 : 54

Step-by-step explanation:

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8 0

3 years ago

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An arithmetic sequence with a thrid term of 8 and constant difference of 5

olga nikolaevna [1]

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=5\\
a_3=8\\
n=3
\end{cases}
\\\\\\
a_3=a_1+(3-1)5\implies 8=a_1+(2)5\implies 8=a_1+10
\\\\\\
\boxed{-2=a_1}
\\\\\\
a_n=-2+(n-1)5$