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elena55 [62]
3 years ago
13

Evaluate 14+(-9)+(-9)

Mathematics
1 answer:
Vilka [71]3 years ago
6 0
The answer to your question is -4
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Find the value of x such that 3^(x^2)/ (3^(2x))=27
cestrela7 [59]
This is how this one is done.  I'm assuming by this type of a problem that you are in logs in math since you need to rules of logs to solve it.  First things first...laws of exponents when the bases are like.  Our base is a 3.  Here's the problem written out: \frac{3^ x^{2} }{3 ^{2x} } =27.  The rules for exponents when dividing like bases is that you subtract the exponents.  So we will do that:  3^{x^2-2x} =27.  Since we are solving for x we need to find a way to get it down from its exponential position.  We do that by takking the log of both sides.  log 3^{x^2-2x}=log27.  Another rule of logs, the power rule, is that once we take the log of a base with an exponent, we can move the exponent down in front, like this:  x^2-2x[log(3)]=log27.  Now we will divide both sides by log(3) to getx^2-2x= \frac{log(27)}{log(3)}.  We do that math on the right side on our calculator to get x^2-2x=3.  Now this is something we can handle.  We have a second degree polynomial that we have to factor for x.  Do that by moving the 3 over by subtraction.  x^2-2x-3=0.  Factoring that you have that x = 3 and x = -1.  There you go!
4 0
3 years ago
A spinner shows eight equal-sized sections. Eli spins the spinner once. Write a word or phrase from the box to correctly describ
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Answer:

1.low probability

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3 years ago
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I need help with this. I don’t understand it. Please help.
Y_Kistochka [10]

Step-by-step explanation:

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Review the graph.
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Answer:

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Step-by-step explanation:

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3 years ago
PLEASE HELP!!! What is the slope parallel to 5x + y = 3, please show me step by step, will give the brainliest for this answer.
Andreas93 [3]

Answer:

-5

Step-by-step explanation:

First, put the equation into the form y = mx +b (where m is the slope and b is the y-intercept)

This would look like:

5x + y = 3\\y = -5x + 3

This means the slope is -5.

Parallel lines always have the same slope, so the slope of the parallel line is also -5

3 0
3 years ago
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