Which type of survey questions cannot be aggregated into a composite scale or index for statistical analysis (quantified)?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

"which statement is necessarily true if bd is an altitude to the hypotenuse of right ? abc? a.) ? adb? ? bdc b.) ? adb~? bdc c.) abbc=acbd d.) ? bac? ? bdc"

38 points and brainliest plz answer question in word document