Answer:
10
Step-by-step explanation:
The constant of variation would be 12 / 1.2 = 10.
It would be the 4th answer
<span>Is it 0.262626...?
repeating decimals you have to write at least two of the repeats so it is obvious what is repeating.
1000x = 262.62626...
10x = 2.62626...
1000x - 10x = 260
990x = 260
x = 26/99</span>
Answer:
14
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 2 , d = - 9 - 2 = - 11 and = - 141, thus
2 - 11(n - 1) = - 141 ← distribute and simplify left side
2 - 11n + 11 = - 141
13 - 11n = - 141 ( subtract 13 from both sides )
- 11n = - 154 ( divide both sides by - 11 )
n = 14
That is the progression has 14 terms
On this question, we can use the order of operations. ( pemdas )
First, we must fill in the missing numbers.
9*21 + (3*3)21 + 12
Start in the parentheses.
(3*3)21 = 9*21 = 189
189+189+12
The rest is just addition now!
189+189+12=390
390 is the correct answer.
