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USPshnik [31]
4 years ago
11

Are my formulas for 9 and 10 correct? i feel like something may be off

Mathematics
1 answer:
sukhopar [10]4 years ago
3 0

Answer:

by my degree in math and other things this is correct.

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What is the equation of the line that passes through the points (–12, –8) and (–17, –16)?
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Answer:

<em>firstly</em><em> find</em><em> the</em><em> gradient</em><em> given</em><em> by</em><em> the</em><em> equation</em>

<em>m=</em><em>y2-y1</em><em>/</em><em>x2-x1</em>

<em>in this </em><em>case</em><em> </em><em>x1 </em><em>is </em><em>-</em><em>1</em><em>2</em><em>,</em><em>x2 </em><em>is </em><em>-</em><em>1</em><em>7</em><em>,</em><em> </em><em>y1 </em><em>is </em><em>-8 </em><em>and </em><em>y2 </em><em>is</em><em>-</em><em>1</em><em>6</em>

<em>m=</em><em>-</em><em>1</em><em>6</em><em>+</em><em>8</em><em>/</em><em>-</em><em>1</em><em>7</em><em>+</em><em>1</em><em>2</em>

<em> </em><em> </em><em> </em><em>=</em><em>-</em><em>8</em><em>/</em><em>-</em><em>5</em><em> </em><em>or1.</em><em>6</em>

<em>then</em><em> </em><em>use </em><em>the </em><em>equation</em>

<em>y-y1</em><em>=</em><em>m(</em><em>x-x1</em><em>)</em>

y+8=1.6(x+12)

y+8=1.6x+19.2

y=1.6x+11.2

I hope this helps and sorry if it's wrong

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A child standing 15 feet from the base of a lamppost casts a shadow 5 feet long. If the child is 4 feet tall and walks towards t
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Step-by-step explanation:

Below is an attachment containing the solution.

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Triangle ABC is similar to triangle LMN by the AA Similarity Postulate.
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Answer:

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Step-by-step explanation:

The perimeter is the sum of the lengths of the sides, so is ...

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Subtracting the terms that are not "b" from both sides of the equation, you get

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Swapping sides of the equal sign, this matches the first choice:

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The two "-a" terms are "like terms" so can be added together. The result matches the second choice.

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