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vitfil [10]
3 years ago
13

Find the value of 'x' in each of the following figures.​

Mathematics
2 answers:
creativ13 [48]3 years ago
7 0

Answer:

You Have to Find Answer Yourself

Step-by-step explanation:

By This - B+D+C = 130°-20°+E

Mrrafil [7]3 years ago
3 0

Answer:

110 degrees

Step-by-step explanation:

when continuing line DC down to line AE, it creates a triangle with the intersection point at AE, C and E.

the angles in that triangle are

E (20 degrees)

the internal angle at C = 180 - 130 = 50 degrees

and the angle at the interception point at AE.

since CD is parallel to AB, that angle is equal to x.

the sum of all angles in a triangle is airways 180 degrees.

therefore this angle is

180 - 20 - 50 = 110 degrees = x

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3 years ago
Show that 1n^ 3 + 2n + 3n ^2 is divisible by 2 and 3 for all positive integers n.
Dmitry_Shevchenko [17]

Prove:

Using mathemetical induction:

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Assuming P(k) is divisible by 2 and 3:

Now, for n=k+1:

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P(k+1) = k^{3}+3k^{2}+3k+1+2k+2+3k^{2}+6k+3

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divisible by 2 and 3.

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3 0
3 years ago
Pls help with this!!
ANEK [815]
A)
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