Question

Find: 15^2 . 15^-5
?​

Answer 1

Answer:

Step-by-step explanation:

15^2 * 15^(-5)= 15^(2-5)= 15^-3 =1/3375

Answer 2

Answer:

a = 15 and b = 1

Step-by-step explanation:

a : 3 : 15 ------------ [ 1 ]

5 : b :  5 ------------ [ 2 ]

a : 3 : 15 = 5 : b : 5

⇒ both ratios are equal

Multiply [2] by a factor of 3, we get:

15 : 3b : 15

Since both ratio have the last part = 15, we can compare them:

a : 3 : 15 ------------ [ 1 ]

15 : 3b :  15 ------------ [ 2 ]

By comparing we can conclude that:

a = 15

3b = 3

b = 1