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Mathematics 15 Online
OpenStudy (anonymous):

Use the explicit formula an = a1 + (n - 1) • d to find the 500th term of the sequence below. 24, 31, 38, 45, 52, ... A.3545 B.3493 C.3524 D.3517

OpenStudy (anonymous):

@ComputerNerd

OpenStudy (anonymous):

@Robert136

OpenStudy (anonymous):

Notice that it's an arithmetic sequence with equal intervals of 7.

OpenStudy (anonymous):

wait what

OpenStudy (anonymous):

oo so it goes by 7 ok

OpenStudy (anonymous):

You want the 500th term. So the increase from n=1 will be 7*499+24 is your answer

OpenStudy (anonymous):

somits d

OpenStudy (anonymous):

so its d

OpenStudy (anonymous):

3517

OpenStudy (anonymous):

Yup

OpenStudy (anonymous):

thx your really god at this stuff

OpenStudy (anonymous):

good

OpenStudy (anonymous):

No prob

OpenStudy (anonymous):

i got one more

OpenStudy (anonymous):

got more questions?

OpenStudy (anonymous):

yea its kinda the same

OpenStudy (anonymous):

go ahed

OpenStudy (anonymous):

The explicit formula for the nth term of an arithmetic sequence is an = a1 + (n - 1) • d. What is the simple formula corresponding to the explicit formula if the first term of the sequence is -10 and the difference between terms in the sequence is 3? A. 3n + 10 B. 3n - 7 C. 3n - 10 D. 3n - 13 E. 3n + 13

OpenStudy (anonymous):

note that difference between terms is always 3. And this quesiton is asking you to pick the equation when first term=-10

OpenStudy (anonymous):

it think its c

OpenStudy (anonymous):

All the other options are there to confuse the wits out of you:)

OpenStudy (anonymous):

nice

OpenStudy (anonymous):

omg ok this one is hard

OpenStudy (anonymous):

First term is -10. So 3n+13

OpenStudy (anonymous):

3n-13

OpenStudy (anonymous):

n=1 3-13=10 right?

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

do you know this one

OpenStudy (anonymous):

D

OpenStudy (anonymous):

Don't snitch on the losers

OpenStudy (anonymous):

ik that but i have a different problem

OpenStudy (anonymous):

Tile setters use small tiles in the shape of hexagons to create all sorts of decorative patterns. In the pattern below, a central red tile is surrounded by bigger and bigger six-sided rings of colored tiles. Only three colored rings are shown, but larger rings of white tiles surround the ones you see here. http://media.apexlearning.com/Images/200511/02/e747e661-53da-4b77-98f1-81817eb5af47.gif Don't count the red tile. The smallest ring has 6 blue tiles in it. The next ring has 12 yellow tiles. Count the number of green tiles in the third ring. Based on the pattern established by the first three rings, how many tiles are there in the 25th ring of white tiles, counting outward from the central red tile? A. 144 B. 150 C. 156 D. 125

OpenStudy (anonymous):

i hate this problem

OpenStudy (anonymous):

Oh I see

OpenStudy (anonymous):

d=+1

OpenStudy (anonymous):

so the 25th ring is144

OpenStudy (anonymous):

I took d as the additional tile outside of the equation.

OpenStudy (anonymous):

so iwas right :D

OpenStudy (anonymous):

ill brb ima go eat

OpenStudy (anonymous):

6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96,102,108,114,,120,126,132,138,144,150,156,162,168,174...

OpenStudy (anonymous):

so 144

OpenStudy (anonymous):

it says don't count on the red tile so that would be 150

OpenStudy (anonymous):

100% positive it's B

OpenStudy (anonymous):

You can count me on this

OpenStudy (anonymous):

ok

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