2 years ago

They opened the front door and mr.mallard enters

Mathematics

1 answer:

SashulF [63]2 years ago

4 0

<h3> Answer:</h3>

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Please help me out

Shalnov [3]

Answer:

Step-by-step explanation:

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2 years ago

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[Quick Answer Needed] Which of the following shows the extraneous solution to the logarithmic equation?

Nitella [24]

Answer:

Step-by-step explanation:

Given the logarithmic equation

$\log_4x+\log_4(x-3)=\log_4(-7x+21)$

First, notice that

$x>0\\ \\x-3>0\Rightarrow x>3\\ \\-7x+21>0\Rightarrow 7x$

So, there is no possible solutions, all possible solutions will be extraneous.

Solve the equation:

$\log_4x+\log_4(x-3)=\log_4x(x-3),$

then

$\log_4x(x-3)=\log_4(-7x+21)\\ \\x(x-3)=-7x+21\\ \\x^2-3x+7x-21=0\\ \\x^2+4x-21=0\\ \\D=4^2-4\cdot 1\cdot (-21)=16+84=100\\ \\x_{1,2}=\dfrac{-4\pm 10}{2}=-7,\ 3$

Hence, $x=3$ and $x=-7$ are extraneous solutions

6 0

2 years ago

MANUFACTURING. The cost of manufacturing widgets is given by

nadezda [96]

Let's solve

C=2p+35

PutC=65

2p+35=65
2p=65-35
2p=30
p=15$

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1 year ago

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An image is the result of an isometric transformation of its pre-image because

FrozenT [24]

the two triangles are congruent

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1 year ago

Kesha rode her bike 12 miles from home to the store. She rode her bike back towards home from the store for 8 miles then walked

stellarik [79]

Answer:

0 Kesha is already home 8+4 is 12 and it's 12 miles from the store to her house .-.

Step-by-step explanation:

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2 years ago

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