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4x+12=1x+60
4x+12=x+60 Move terms
4x-x=60-12 collect the like terms
Subtract
3x=48
Divide both sides by 3
X=16
compare the triangles ΔABC and ΔBCD
∡ABC = ∡BCD (given)
AB = CD (given)
BC = BC (common) } = > (SAS) ΔABC ≡ ΔBCD = > AC = BD
Hope this answer helps, it would be 6 since there is 6 sides to a cube.
Convert the fraction to a decimal by dividing the numerator by the denominator to approximate the decimal result.
Answer=0.6666666666666