An n sided polygon has n (n-3) by 2 diagonals a) How many sides has a polygon with 665 diagonals?
b)Why cannot a polygon have 406 diagonals?

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24

sorry i really don't know what tiles and steps you are referring to

step-by-step explanation: