Well it's 70+42+70+48 or 230 sq. ft
Answer:
120 km
Step-by-step explanation:
60km+60km=120
The type of limacon graphed is a convex.
Answer:
147
Step-by-step explanation:
The ∑ symbol means sum the term inside 4n + 1 from n = 2 to n = 8
Substitute n = 2, 3, 4, 5, 6, 7, 8 into the expression and sum the results , that is
4(2) + 1 + 4(3) + 1 + 4(4) + 1 + 4(5) + 1 + 4(6) + 1 + 4(7) + 1 + 4(8) + 1
= 9 + 13 + 17 + 21 + 25 + 29 + 33
= 147
First, what letter can it be at the beginning?
English Alphabet has 26 letters, so we have 26 possibilities
26*
then it can be any of 10 digits
26*10=260
then any of the remaining 9 digits:
26*10*9
then any of the remaining 8 and 7 digits:
26*10*9*8*7=131040
so the solution is: 131040 possible combinations!
