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3 years ago

Plz help 7th grade math ASAP

Mathematics

2 answers:

Nikolay [14]3 years ago

5 0

Answer:

Step-by-step explanation: think of it this way. When you adding a positive to a negative, you simply taking the negative away from the positive. So in this case, you are subtracting 2 from 8 to get six. Or, its the difference between the positve and the negative!! Hope this helps!

navik [9.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

Simplify: 8 + (-2) = 8 - 2
8 - 2 = 6

I hope this helps!

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Answer:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

Step-by-step explanation:

The given system of linear equations is:

$(cos\theta)x+(sin\theta)y=1\\(-sin\theta)x+(cos\theta)y=0$

We have to solve the equations for the values of $x, y$ .

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For this, let us multiply the first equation by $sin\theta$ and second equation by $cos\theta$

Now, the equations become:

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Now, let us add (1) and (2):

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Using the equation:

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Putting value of $y$ :

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