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Crank
3 years ago
11

Solve for x -x + 2 = 4

Mathematics
2 answers:
Zanzabum3 years ago
7 0

Answer:

x= -2

Step-by-step explanation:

1. subtract 2 from both sides to leave x by itself

2. divide both sides by 1 to make x positive

andreev551 [17]3 years ago
6 0

Answer:

-2

Step-by-step explanation:

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2 years ago
Find the sum of a finite geometric sequence from n=1 to n=8, using the expression -2(3)^n-1
MissTica
\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
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\\\\\\
\sum\limits_{n=1}^{8}~-2(3)^{n-1}~~
\begin{cases}
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3 years ago
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