What is the value of x? Enter your answer in the box. x =

Mathematics

2 answers:

Ket [755]3 years ago

4 0

Answer:

The value of x is 7 cm

Step-by-step explanation:

If you have given an equation, you see the x and y in it. Just taking second equation and think any common factor between x's variable. With common factor, multiply both and you will find the value of y and put it in any equation, you will find the value of X

oee [108]3 years ago

3 0

Answer : The value of 'x' is, 25

Step-by-step explanation :

The given triangle is an equilateral triangle in which all angle and sides are equal.

That means,

All angles are 60°.

All sides, AB = BC = AC

Given:

Side AB = 3x - 5

Side BC = 2x + 20

Side AC = 4x - 30

As, AB = BC = AC

So, 3x - 5 = 2x + 20 = 4x - 30

3x - 5 = 2x + 20

3x - 2x = 20 + 5

x = 25

Therefore, the value of 'x' is, 25

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Y can be found by setting the 3 angles in the bottom triangle equal to 180 degrees like so:

45 + 55 + y = 180

100 + y = 180 (Simplify)

y = 80 (Subtract 100 from both sides)

Angles x and y are opposite angles, so they are equal to each other. This means that x = 80 degrees also.

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3 years ago

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Alik [6]

Answer:

9 1/2

Step-by-step explanation:

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