3 years ago

Write an explicit formula an, the nth term of the sequence 23,25,27

Mathematics

1 answer:

AnnyKZ [126]3 years ago

7 0

Answer:

2n+21

Step-by-step explanation:

rule = 2 so 2n

if n=1, 1x2=2 23-2=21

so +21

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2 years ago

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Answer B
++++++++++++++++++++++

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Which equation is the inverse of 2(x - 2)2 = 8(7 + y)?

Marina86 [1]

Answer:

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Step-by-step explanation:

Given equation : $2(x - 2)^2 = 8(7 + y)$

$\Rightarrow \frac{2(x-2)^2}{8}=7+y\\\Rightarrow \frac{2(x-2)^2}{8}-7=y$

Replace x with y and y with x

So, $\Rightarrow \frac{2(y-2)^2}{8}-7=x\\\Rightarrow \frac{2(y-2)^2}{8}=x+7\\\Rightarrow 2(y-2)^2=8(x+7)\\\Rightarrow (y-2)^2=4(x+7)\\\Rightarrow (y-2)=\sqrt{4(x+7)}\\\Rightarrow y=\sqrt{4(x+7)}+2\\\Rightarrow y=\sqrt{4x+28)}+2$

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