What value of x will make parallelogram ABCD a rhombus?

x = ?

x=34

Step-by-step explanation:

3x-12=90

3x-12+12=90+12

3x=102

3x/3 = 102/

x=34

Step-by-step explanation:

From the picture we have

AD = CD = BC = AB

it's enough to say that this quadrangle is a rhombus.

The diagonals in each rhombus are perpendicular and divide to half.

Therefore we have the equation:

3x - 12 = 90            add 12 to both sides

3x - 12 + 12 = 90 + 12

3x = 102          divide both sides by 3

3x : 3 = 102 : 3

x = 34

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25

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