Question

find the value of x 12and3 please explain​

Answer 1

Answer:

Step-by-step explanation:

See what you do here is that first you write down the question on the top

x:12=3:4

“:” Sign is a sign of division. So then you replace “:” with “/”(another sign of division/fraction)

So, x/12=3/4

In division, the opposite signs (i.e. 12 and 3 and x and 4) go for multiplication.

Hence, x/12=3/4

4x = 12x3

Then it becomes a simple “x” equation and you find the value of x

4x= 36

x=36/4

x= 9

Answer 2

Heya,

✦ We know by the angle sum property of the triangle that the sum of all angles of a triangle is equal to 180°. So using this property, let's solve the given parts:-

(i) The given angles are 94°, 2x and 2x + 10. Their sum will be 180°, as denoted by the angle sum property. Therefore, the following equation will be formed:-

• 94° + 2x + 2x + 10 = 180°

We solve the equation by the transposition method:-

• 104° + 4x = 180° (adding the like terms on the LHS)
• 4x = 180° - 104° (transposing 104 to the RHS)
• 4x = 76°
• x = 76/4 (transposing 4 to the RHS)
• x = 19°

ii) The given angles are x, 32° and 24°. Their sum will be 180° as denoted by the angle sum property. Therefore the following equation will be formed:-

• x + 32° + 24° = 180°

We solve the equation by the transposition method:-

• x + 56° = 180°
• x = 180° - 56° (transposing 56 to the RHS)
• x = 124°

iii) The given angles are 70°, 65° and x + 35°. Their sum will be 180° as denoted by the angle sum property. Therfore the following equation will be formed:-

• 70° + 65° + x + 35° = 180°
• 170° + x = 180°
• x = 180° - 170° (transposing 170 to the RHS)
• x = 10°