Answer:
Arithmetic sequence:
Geometric sequence:
Step-by-step explanation:
The arithmetic sequence: is the sequence whos terms increased or decreased by a constant amount.
Examples:
- 4, 7, 10, 13, 16, ........................ (increased by 3)
- 25, 20, 15, 10, ......................... (Decreased by 5)
The explicit formula for the nth term of the arithmetic sequence is:
- is the first term
- d is the constant difference between each two consecutive terms
- n is the position of the number in the sequence
The geometric sequence: is the sequence whos consecutive terms have a constant ratio
Examples:
- 1, 2, 4, 8, 16, ........................ (Multiplying by 2)
- 625, 125, 25, 5, ......................... (Dividing by 5)
The explicit formula for the nth term of the geometric sequence is:
- is the first term
- r is the constant ratio between each two consecutive terms
- n is the position of the number in the sequence
* Arithmetic sequence →→→→→→ Geometric sequence
Has a constant difference →→→→→→ Has a constant ratio
→→→→→→
→→→→→→
Division is the splitting of large numbers (in this case) numbers into equal groups of smaller numbers.
Here are some terms you need to understand before you divide:
The number being divided is called the <em><u>dividend</u></em>.
The number that you're dividing by is called the <u><em>divisor</em></u>.
The answer that you get to the division problem is called the <em><u>quotient</u></em>.
For example:
Let's try dividing 4 ÷ 2 .
Since 4 is the number being divided, it is the <em>dividend</em>.
And since were are dividing 4 (the dividend) by 2, 2 is the <em>divisor</em>.
We need to try and find the quotient to solve 4 ÷ 2 .
Think of it this way;
There are 6 cookies and we need to divide them equally so that 2 people can have the same amount of cookies.
6 ÷ 2 = 3
You know the answer is 3 because 2 goes into 6 three times. 2 × 3= 6 (Since you asked a question about division, I'm guessing you know multiplication.)
3 for one person and 3 for the other.
So how many does each person get? 3 cookies, fair and square.
A nice way to check this problems is fact families, as I have mentioned before with the multiplication problem.
Hope this helps!
-- Alina (:
Answer:
3.11%
Step-by-step explanation:
4/128.6=0.0311
multiply by 100
3.11%
20(x+17)
20×x+20×17
20x+340