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Olegator [25]
3 years ago
7

Classify the quadrilateral, and then find the value of the variable for each figure:

Mathematics
1 answer:
DedPeter [7]3 years ago
3 0

Answer:

x=4,\\y=8

Step-by-step explanation:

Notice that in the diagram, opposite sides are equal. This is true for any rectangle, so even without the equal sides being marked, we'd know that each pair of opposite sides have the same length.

Therefore, we can set up the following equations and solve for x and y:

2y=y+8,\\y=\boxed{8}

4x-8=2x,\\-8=-2x,\\x=\boxed{4}

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The first four terms of sequence is 20, -10, -40, -70

<em><u>Solution:</u></em>

Given that we have to find the first four terms of sequence

<em><u>Given recursive formula is:</u></em>

a_n = 20 - 30(n-1)

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<em><u>To find the second term, substitute n = 2</u></em>

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Thus the second term of sequence is -10

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