4 years ago

Which equations show the identity property of multiplication?

Mathematics

1 answer:

Lady bird [3.3K]4 years ago

3 0

My answer is a and c becuase they equal the same on each side

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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

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3 years ago

Simplify the expression. <br><br>tan(-x)csc(-x)/sec(-x)cot (-x)

Scrat [10]

Tan(-x)csc(-x)sec -1 (-x)cot(-x) i am not sure, I hope you get a good grade, this is what i got.. ',: (

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3 years ago

If it is 10:46 am how many minutes until noon?

valentinak56 [21]

Since there's 1 hour and 14 minutes until noon, and one hour is 60 minutes, 60 + 14 = 74 minutes until noon.

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3 years ago

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Please do part A and part B on number 9!

Mashcka [7]

Answer:

A=5

B=4

Step-by-step explanatation

so the 3ft at the front and the 8ft at the back, you do 8-3 which is 5 which will be A and on the side, it is 8ft and since the corner angle is 4ft then B will be 8-4 which is 4

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ladessa [460]

<h3>Answer: B) 25 = 10 + w</h3>

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4 years ago