Respuesta :

Answer:

12

Step-by-step explanation:

√9 = 3 and √16 = 4

3 + 4 = 7

There is the same relationship in the second and third  set of numbers.

so for 25,9 the answer is 5 + 7 = 12


Answer:

12.

Step-by-step explanation:

We have been given format of different numbers. We are asked to find the missing value for our given format.

[tex]9,16=7[/tex]

Taking square root of 9 and 16 we will get,

[tex]\sqrt{9}=3[/tex]

[tex]\sqrt{16}=4[/tex]

[tex]3+4=7[/tex]

Similarly, we can see that by taking the square root of all the on the left side of equation and adding them we get right side of equation.

[tex]\sqrt{4}=2[/tex]

[tex]\sqrt{36}=6[/tex]

[tex]2+6=8[/tex]

[tex]\sqrt{121}=11[/tex]

[tex]\sqrt{81}=9[/tex]

[tex]11+9=20[/tex]

Upon taking square root of 25 and 49 we will get,

[tex]\sqrt{25}=5[/tex]

[tex]\sqrt{49}=7[/tex]

[tex]5+7=12[/tex]

Therefore, the missing number of our given sequence is 12.