∠a and ∠b are vertical angles. if m∠a=(2x+21)∘ ∠a=(2x+21)
and m∠b=(x+17)∘∠b=(x+17)
, then find the value of x.

Ihave trouble finding the nth term of a linear sequence

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so