State whether each expression is meaningful. if not, explain why. if so, state whether it is a vector or a scalar. (a) a · (b × c. the expression is meaningful. it is a vector. the expression is meaningful. it is a scalar. the expression is meaningless. the cross product is defined only for two vectors.

we are given

a · (b × c)

we know that

cross product of two vectors are vector

and dot product of two vectors are scalar

(b × c) is cross product of vectors b and c

so,(b × c) = vector

a ·( vector) is dot product of two vectors

so, a ·( vector) = scalar

so, this expression is meaningful

and

a · (b × c) = scalarAnswer

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

answer: do we write it

step-by-step explanation: