Answer:
3.9 x 107
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
the mean of each park in cityA: is 7.5
the mean of each park in cityB: is 7.3
what i did to find the mean is that i added up all of the numbers of acres of parks in each city then divided by ten the reason i divided by ten is because there is ten numbers in each list of acres.
the range of the numbers of acres for the parks is 10
the way i found this out is that i first listed all of the numbers of acres of land for parks from both citys from least to greatest then subtracted the smallest(2) to the largest(12) which gave me 10 cause all your doing is takeing 2 form 12.
Answer:
A
Step-by-step explanation:
Pentagons have a total of 540°, so taking this into account, you need to add all of the angles together and then subtract 540 to get the missing angle.
90 + 90 + 140 + 140 = 460
540 - 460 = 80°
The sum of an arythmetic sequence for first term, a1 and last term, an and up to the term, n is

n=58
a1=6
a58=405




sum is 11,919