Advertisements
Advertisements
Question
Evaluate:
`(3^-1xx9^-1)÷3^-2`
Sum
Advertisements
Solution
`(3^-1xx9^-1)÷3^-2`
=`(1/3xx1/9)÷1/3xx1/3`
=`1/27÷1/9`
=`1/27xx9/1=1/3`
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Express the following number using exponential notation:
3125
Express the following as product of powers of its prime factor:
3,600
Compare the following numbers:
2.7 × 1012; 1.5 × 108
Evaluate:
`(2^-1+3^-1)^3`
Expand a3b2, a2b3, b2a3, b3a2. Are they all same?
Find the value of the following.
54
Identify the greater number in the following.
53 or 35
49 is greater than 163.
Write the number of seconds in scientific notation.
| Sl. No. | Unit | Value in Seconds |
| 1. | 1 Minute | 60 |
| 2. | 1 Hour | 3,600 |
| 3. | 1 Day | 86,400 |
| 4. | 1 Month | 2,600,000 |
| 5. | 1 Year | 32,000,000 |
| 6. | 10 Years | 3,20,000,000 |
The number of diagonals of an n-sided figure is `1/2(n^2 - 3n)`. Use the formula to find the number of diagonals for a 6-sided figure (hexagon).
