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Monica [59]
3 years ago
7

Solve this system of equations. x + y = -3 x - y = 1

Mathematics
2 answers:
Ksju [112]3 years ago
7 0
The correct answer is A.
Sindrei [870]3 years ago
4 0
A. (-1,-2)

Because:
x + y = -3                                     
-1 + (-2) = -3
-3 = -3

x - y = 1
-1 - (-2) = 1
-1 + 2 = 1
1 = 1
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Answer:

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Step-by-step explanation:

Given

(\frac{b}{r})^2  + (\frac{a}{r})^2

Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

(\frac{b}{r})^2  + (\frac{a}{r})^2  = (\frac{r}{r})^2

Going by the Pythagoras theorem, we can assume the following.

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So, we have:

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Having said that:

The expression can be further simplified as:

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Substitute values for sin and cos

(\frac{b}{r})^2  + (\frac{a}{r})^2  = 1 becomes

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3 years ago
Find the solution set of the inequality<br> 35- 4x &gt; 2
Orlov [11]
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