You find the square root of 5 and 3 then square the answers you get which just undos the square root so in the end you just have 5 times 3 which is 15.

7 0

3 years ago

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A sequence is recursively defined by f(1)=3,f(n)=2* f(n-1) for n >=2. Write the equation for the nth term

GarryVolchara [31]

Given:

$f(1)=3,f(n)=2\times f(n-1)$ ...(i)

For $n\geq 2$ .

To find:

The nth term for the given recursive formula.

Solution:

The given recursive formula is of the form of

$f(n)=r\times f(n-1)$ ...(ii)

It is the recursive formula of a GP, where r is common ratio.

On comparing (i) and (ii), we get

$r=2$

Now,

First term: $a=f(1)=3$

Common difference: $r=2$

nth term of a GP is

$f(n)=ar^{n-1}$

Putting a=3 and r=2, we get

$f(n)=3(2)^{n-1}$

Therefore, the equation for the nth term is $f(n)=3(2)^{n-1}$ .

3 0

3 years ago

48 is 60% of what number?

Naddik [55]

Your answer:
Divide 48 by 0.6 for the answer.
The answer is 80.

5 0

3 years ago

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Someone please help me with this.

notka56 [123]

Forty_five point five

5 0

3 years ago