To find equivalent numbers you multiply the top and bottom by the same number. Examples are: 2/10 (by 2), 3/15 (by 3), 4/20 (by 4), etc.
1 * 9 = 9
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5 * 9 = 45
So another is 9/45
hope it helps!
Find the next two terms in the given sequence, then write it in recursive form. A.) {7,12,17,22,27,...} B.) { 3,7,15,31,63,...}
iren [92.7K]
Answer:
A) a_n = 5n + 2
B) a_n = (2^(n + 1)) - 1
Step-by-step explanation:
A) The sequence is given as;
{7,12,17,22,27,...}
The differences are:
5,5,5,5.
This is an arithmetic sequence following the formula;
a_n = a_1 + (n - 1)d
d is 5
Thus;
a_n = a_1 + (n - 1)5
Now, a_1 = 7. Thus;
a_n = 7 + 5n - 5
a_n = 5n + 2
B) The sequence is given as;
{ 3,7,15,31,63,...}
Now, let's write out the differences of this sequence:
Differences are:
4, 8, 16, 32
This shows that it is a geometric sequence with a common ratio of 2.
In the given sequence, a_1 = 3 and a_2 = 7 and a_3 = 15
Thus, a_2 = 2a_1 + 1
Also, a_(2 + 1) = 2a_2 + 1
Combining both equations, we can deduce that: a_(n + 1) = 2a_n + 1
Thus; a_n can be expressed as:
a_n = (2^(n + 1)) - 1
Answer:
1/64, 1/256, 1/1024
Step-by-step explanation:
To get from 16 to 4 we multiply by 1/4
To get from 4 to 1 we multiply by 1/4
Each time we multiply by 1/4
The next term would be 1/16 * 1/4
1/16 * 1/4 = 1/64
The take that term 1/64 and multiply by 1/4
1/64*1/4 = 1/256
Finally take 1/256 and multiply by 1/4
1/256*1/4 =1/1024
Answer:
Step-by-step explanation:
Use the circle equation, 
Plug in the center and radius:
Simplify:
So, the equation is
