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igomit [66]
3 years ago
13

What is the value of x

Mathematics
2 answers:
NikAS [45]3 years ago
6 0

<u>Answer</u>

2


<u>Explanation</u>

The two angles in the diagram are directly opposite. Directly opposite angle are equal.

∴ 12x - 7 = 4x + 9

put the like terms together,

12x - 4x = 9 + 7

8x = 16

x = 16/8

  = 2

Olegator [25]3 years ago
3 0

First set up the equation 12x-7=4x+9

Get all the x's on one side and number on one side so you have 8x= 16

You get X=2

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Water has a density of 1.0 g/cm3. What is the mass of 10.0 cm3 of water?
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8 0
3 years ago
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You buy 100 shares of a company stock at $9.75 per share and place the same amount in a savings account earning 4.5% APR. The st
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2 years ago
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The combined area of two squares is 80 square centimeters. Each side of one square is twice as long as a side of the other squar
o-na [289]

The length of each side of the larger square is 8 cm.

<u>Step-by-step explanation</u>:

Step 1 ;

  • The combined area of two squares = 80 sq.cm
  • The side of small square = x
  • The side of larger square = 2x

Step 2 :

Area of the square = a^2

Area of small square + area of large square = 80

x^2 + (2x)^2 = 80

x^2 + 4x^2 = 80

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Step 3 :

Since length cannot be negative, the value of x= 4

∴ The length of the side of small square = 4cm

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5 0
3 years ago
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