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atroni [7]
3 years ago
15

Help on number 9 please!

Mathematics
1 answer:
lutik1710 [3]3 years ago
4 0

2x+2

Work:

Factor 2x^2+10x+12: 2(x+2)(x+3)

Cancel all x+3, leaving 2(x+2)

2x+2

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(ED. 21) Analytic Geometry Unit Test..... #3 Which point is a solution of x2 + y2 > 49 and y ≤ –x2 – 4?
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Answer:

We want to find a solution of the system:

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Here we do not have any options, so let's try to find a general solution.

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If we look at our first inequality, we can write it as:

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Then the solutions of the system, are the ones that are in the region of solutions for both inequalities.

You can see the graph below, where both regions are graphed. The intersection of these regions is the region of the solutions for the system of inequalities:

by looking at the graph, we can see a lot of points that are solutions, like:

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8 0
3 years ago
What is the point-slope form of a line with a slope -3 that contains the point (10,-1)
Citrus2011 [14]
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x1:  and 10 goes to the x1 spot

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The answer is:

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depending on what you are supposed to do.

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