3 years ago

Solve the equation correctly

Mathematics

1 answer:

Gemiola [76]3 years ago

7 0

Answer:

X1 = 3

X2 = -4

Step-by-step explanation:

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Alex73 [517]

Answer:

6 ft

Step-by-step explanation:

6^3 = 216

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2 years ago

Plzzzzz teach this.....<br>I wiil Mark as brainlist answer if correct

GuDViN [60]

Omg don’t open that file it’s takes all your information

7 0

2 years ago

Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15.

Naya [18.7K]

It's a geometric sequence.

$4,-12,36,... \\ \\
a_1=4 \\
r=\frac{a_2}{a_1}=\frac{-12}{4}=-3 \\ \\
a_n=a_1 \times r^{n-1} \\
a_n=4 \times (-3)^{n-1} \\
a_n=4 \times (-3)^{-1} \times (-3)^n \\
a_n=4 \times (-\frac{1}{3}) \times (-3)^n \\
a_n=-\frac{4}{3}(-3)^n$

It's the sum for term 4 through term 15.

$\boxed{ \sum\limits_{n=4}^{15} (\frac{4}{3}(-3)^n)}$