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2 years ago

Help me with this question please?

Mathematics

1 answer:

UNO [17]2 years ago

6 0

$\bf 3^{n+2}-3^n=8\cdot 3^n\implies \boxed{3^n\cdot 3^2}-3^n=8\cdot 3^n
\\\\\\
\stackrel{common~factor}{3^n}(3^2-1)=8\cdot 3^n\implies 3^2-1=\cfrac{8\cdot \underline{3^n}}{\underline{3^n}}\implies 3^2-1=8
\\\\\\
9-1=8\implies 8=8$

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Answer:

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Step-by-step explanation:

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V = lwh l = 8 W = 3 h = 9

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Given that f(x) = x2 – 3x – 28 and g(x) = x - 7, find

gregori [183]

Answer:

$(f-g)(x)=x^2-4x-21$

Step-by-step explanation:

We are given the two functions:

$f(x)=x^2-3x-28\text{ and } g(x)=x-7$

And we want to find:

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This is equivalent to:

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Distribute:

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