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photoshop1234 [79]
3 years ago
15

3-X²=-7 How do I solve

Mathematics
1 answer:
irga5000 [103]3 years ago
8 0

Answer:

x = 3.162

Step-by-step explanation:

Your first step is to get x by itself by subtracting 3 from both sides.

3-x^{2} = -7

-x^{2} = -10

Now multiply by both sidex by -1 to make x positive.

x^{2} = 10

now take the square root of both sides.

\sqrt {x^{2} = \sqrt{10}

x = \sqrt{10}

x = 3.162

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Answer:

30 and 60

Step-by-step explanation:

1. "The measure of angle is twice the measure of its complement" means that one angle is twice the amount of another angle, and when both of them are added together, they equal 90°.

2. 60 is twice the amount of 30, and when both of them are combined, they equal 90°.

Therefore, the answer is 30 and 60.

8 0
3 years ago
3x-5+6y-9+10x
telo118 [61]
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Hitman42 [59]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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4 0
3 years ago
Braceleftzf y = 8/7 x − 2/3 <br> 8/3 x + y = 5/9
givi [52]

Answer:

  (x, y) = (77/240, -3/10)

Step-by-step explanation:

It is convenient to write the equations in standard form.

Multiplying the first equation by 21 gives ...

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Multiplying the second equation by 8 gives ...

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Then the system of equations in standard form is ...

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Subtracting the first from the second, we get ...

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Substituting this into the second equation, we have ...

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The solution is (x, y) = (77/240, -3/10).

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