Answer:
DB = 8
Step-by-step explanation:
Δ ADB and Δ BDC are similar so ratios of corresponding sides are equal, that is
=
, substitute values
= 
=
( cross- multiply )
DB² = 64 ( take the square root of both sides )
DB =
= 8
Each pound 4.20/2 = $2.10
5 pounds will cost + 2.10 x 5 = $10.50
Answer:
well x-(-18) x+18 but the if part is x<-18 will stay the same
Step-by-step explanation:
Answer:
Step-by-step explanation: