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kupik [55]
3 years ago
7

What is the value of X

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
6 0
88 i believe is right
<span />
Snezhnost [94]3 years ago
3 0

Suppose that a polygon has ‘n’ sides, then it is to be divided into (n - 2) triangles. 

We know that, the sum of the interior angles of a triangle = 180°.

Therefore, the sum of the angles of (n - 2) triangles = 180 × (n - 2)

                                                                            = 2 × 90 × (n - 2)

                                                                            = 2 right angles × (n – 2)

                                                                            = 2(n – 2) right angles

                                                                            = (2n – 4) right angles

Therefore, 

the sum of interior angles of a polygon having n sides is (2n – 4) right angles.

Hence,

the sum of the interior angles of a pentagon (n = 5)

= (2n - 4) right angles

= (2 × 5 - 4) × 90°

= (10 - 4) × 90°

= 6 × 90°

= 540°

<span><span>
131 + 108 + 107 + 110 + x = 540
</span>
456 + x = 540

x = 540 - 456

x = 84°</span>
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One irrational number between 5 and 7 is \sqrt{37}.
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3 years ago
Jenny thinks that the expression below is equal to x²-4. If you agree, show that she is correct. If you disagree, show that she
sergiy2304 [10]

Answer:

Jenny is wrong the correct answer is x²+ 4 - 4 x.

Step-by-step explanation:

Given that

(x-2)³∕x-2

(x-2)³∕(x-2) =(x-2) (x-2)²∕(x-2)

(x-2)³∕(x-2) = (x-2)²

As we know that

(a-b)² = a²+b² - 2 ab

So

(x-2)² = x²+ 2² - 2 ˣ 2 ˣ x =  x²+ 4 - 4 x

(x-2)² =  x²+ 4 - 4 x

It means that

(x-2)³∕(x-2) = (x-2)² =  x²+ 4 - 4 x

So Jenny is wrong the correct answer is x²+ 4 - 4 x.

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2 years ago
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Step-by-step explanation:

what do u need help solve

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Can you please help me? Thanks!!!!
ss7ja [257]
The answer is 25 degrees.

This is how you solve the equation, first you must know that the straight like ABC=180, DBC is 130, so the remaining amount is 50 degrees, BE is a bisector of ABD which means it splits ABD right down the middle. So ABE+EBD=50 degrees, 25+25=50 since both sides MUST be equal in order for BE to be a bisector of ABD.

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