The perimeter of a triangle is 51 cm. The length of its sides are x cm, x + 2cm, and x + 4cm. What is the length, in cm, of the longest side of the triangle? PLEASE HELP FAST

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2