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faltersainse [42]
3 years ago
6

How do I do this question

Mathematics
1 answer:
exis [7]3 years ago
7 0
To make the x the subject of an equation simply isolate x. To isolate means to get (something) by itself. To isolate x in this equation, just subtract A from both sides.

Note: Whatever operation you apply to an equation, you must apply to both sides of the equation to keep the sides equal. That is why you must subtract A from both sides.

      y = x + A
    -A        - A
y - A = x
      x = y - A

Answer:
x = y - A
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If the number of roaches triples every day, and there are 10 to start with, write an equation to represent this situation. How m
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Which ordered pair is the best estimate for the solution of
devlian [24]

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(1.5, 2.5) is the best approximate solution.

Step-by-step explanation:

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Someone please help me?
Harman [31]
The answer is 23 because I know this answer.
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Read 2 more answers
Find all solutions in the interval [0,2pi).<br><br> cos 2x + sqrt(2) sinx=1
kykrilka [37]
<span>cos 2x + sqrt(2) sinx=1
</span><span>
Note that: cos 2x = cos^2x - sin^2x = (1-sin^2x) - sin^2x = 1 - 2sin^2x.
So, when alternatively written, you have the following equation:

</span>- 2sin^2x + sqrt(2)sinx + 1 = 1
- 2sin^2x + sqrt(2)sinx = 0

Then, let z=sin(x). So you get,

- 2z^2 + sqrt(2)z = 0
z(- 2z + sqrt(2)) = 0

Either z=0, or - 2z + sqrt(2) = 0 --->  z=sqrt(2)/2.
Then, since z=0 or z=sqrt(2)/2, therefore sin(x)=0, or sin(x)=sqrt(2)/2.

Then, for you remains just to list the angles. (Let me know if this is not fair or if you got questions.)
6 0
3 years ago
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