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Svet_ta [14]
2 years ago
9

Please help, this is due today:

Mathematics
1 answer:
Marina86 [1]2 years ago
8 0

Answer:

x = 17

Step-by-step explanation:

∠ DCE = ∠ ACE ( vertically opposite angles )

The sum of the 3 angles in a triangle = 180° , then

∠ DCE = 180° - (100 +x) = 180 - 100 - x = 80 - x

∠ ACE = 180 - (49 + 4x) = 180 - 49 - 4x = 131 - 4x

Equating the 2 angles

80 - x = 131 - 4x ( add 4x to both sides )

80 + 3x = 131 ( subtract 80 from both sides )

3x = 51 ( divide both sides by 3 )

x = 17

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7 0
4 years ago
Can somebody explain please?
Scilla [17]

Answer:

34 degrees

Step-by-step explanation:

considering the two lines are parallel:

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3 0
4 years ago
Read 2 more answers
Find the area of the polygon with vertices of A(0,1), B(0,5), C(4,5), and D(6,1).
Papessa [141]

20

If you draw that out on a coordinate grid, you get a trapezoid with one base 6 units long, one base 4 units long and a height of 4. Using the formula for area of a trapezoid 

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7 0
4 years ago
What is 5 1/2 x 2 1/3
Papessa [141]
<span>5 1/2 x 2 1/3</span>

Change your fractions into decimals.

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5.5 x 2.33 = 12.815

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hope this helps
4 0
3 years ago
Read 2 more answers
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Taya2010 [7]

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