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vichka [17]
3 years ago
5

Help me asap please

Mathematics
1 answer:
iren [92.7K]3 years ago
7 0

A(-3, -1); B(2, -1), C(2, 3)

You can read the length of AB and BC.

|AB| = 5

|BC| = 4

Use the Pythagorean theorem:

|AC|^2=5^2+4^2\\\\|AC|^2=25+16\\\\|AC|^2=41\to|AC|=\sqrt{41}\\\\|AC|\approx6.4

The perimeter:

P=|AB|+|BC|+|AC|\\\\P=5+4+6.4=15.4

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Answer:

g = 3.5

f = 78°

<u>Finding</u><u> </u><u>g</u><u>:</u>

25 is parallel to 8g - 3, so they are equal to each other.

25 = 8g - 3

28 = 8g

g = 3.5

<u>Finding</u><u> </u><u>f</u><u>:</u>

72° create a sum of 180° when adding to (f + 30) because they are supplementary.

72 + f + 30 = 180°

102 + f = 180°

f = 78°

Hope this helps!

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