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erica [24]
2 years ago
15

Y’all know this anything about this?

Mathematics
1 answer:
Andre45 [30]2 years ago
7 0

We are given:

  • Parallelogram CDEF
  • ∠C = 13x - 10
  • ∠D = 5x + 10

To Find: ∠E

Concept Used:

  • Adjacent angles of a Parallelogram are Supplementary

Finding the value of 'x':

Since adjacent angles of a parallelogram are Supplementary:

∠D + ∠C = 180

5x + 10 + 13x - 10 = 180              [replacing the values of angle C and D]

18x = 180

x = 10                                          [dividing both sides by 18]

__________________________________________________________

Finding Measure of Angle D:

We are given that:

∠D = 5x + 10

∠D = 5(10) + 10                    [since x = 10]

∠D = 60°

__________________________________________________________

Finding the measure of ∠E:

∠D and ∠E are Adjacent angles

Since Adjacent angles are Supplementary:

∠D + ∠E = 180

60 + ∠E = 180

∠E = 120°                                  [subtracting 60 from both sides]

Hence, the measure of ∠E = 120°

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7 0
3 years ago
Explain how to estimate the product of 12 3/8 × 6 7/8
Gnesinka [82]
You can round each number to the nearest half

12 3/8 = 12 1/2

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~Aamira~

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3 0
3 years ago
I’m stuck on this question
umka2103 [35]

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Step-by-step explanation:

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3 years ago
Hello! I need help on this question (attached below)
Aleonysh [2.5K]

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Step-by-step explanation:

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Vesna [10]
Hi there!


The answer would be supplementary angles.

Hope this helps!
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