ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Sequences and Series Videos 8 videos
Sequences are nice. Without them, there would be no rhyme or reason to anything—no way to ever know what’s coming next. And it would make tryin...
SAT Math 1.5 Numbers and Operations. How many dots would be in the 5th term of this sequence?
SAT Math 2.1 Numbers and Operations. How many dots will be in the 6th term of this sequence?
SAT Math 2.1 Numbers and Operations 218 Views
Share It!
Description:
SAT Math 2.1 Numbers and Operations. How many dots will be in the 6 th term of this sequence?
Transcript
- 00:03
Hope you left room for an extra helping of Shmoop.
- 00:06
How many dots will be in the 6th term of this sequence?
- 00:10
And here are the potential answers:
- 00:14
Oh look! We're building bigger and bigger triangles!
- 00:17
Looks like there's a pattern here...
Full Transcript
- 00:24
So from the first dot to the second picture...we have columns of 1 dot and 3 dots...
- 00:30
…from the second to the third...we get columns of 1, 3, and 5 dots...
- 00:33
So it looks like we're increasing the number of dots in each column by 2 as we go from term to term.
- 00:39
So the fourth term will have columns of 1, 3, 5, 7…for 16 dots total…
- 00:45
The fifth term will have columns of 1, 3, 5, 7, 9… or 25 dots total…
- 00:51
…and the sixth term will have columns of 1, 3, 5, 7, 9, 11…or 36 dots total.
- 00:57
Answer's E.
Related Videos
SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?
In 2014, the unemployment rate of one county in California was 7%. In another county, the unemployment rate was 11%. Which of the following express...
Angela is making cookies for a bake sale. She expects each batch of her cookies to sell for $40. It costs her $10 to make one batch of cookies, and...