Advertisements
Advertisements
प्रश्न
Find x.
2x + 2x + 2x = 192
उत्तर
We have, 2x + 2x + 2x = 192
⇒ 2x(1 + 1 + 1) = 192
⇒ 3 × (2x) = 192
⇒ `2^x = 192/3 = 64`
⇒ 2x = 2 × 2 × 2 × 2 × 2 × 2
⇒ 2x = 26
On comparing the power of 2, we get
x = 6
APPEARS IN
संबंधित प्रश्न
Simplify and write the answer in the exponential form.
(25 ÷ 28)5 × 2-5
The value of `1/4^-2` is ______.
`(-5/7)^-5` is equal to ______.
For any two non-zero rational numbers x and y, x4 ÷ y4 is equal to ______.
The value of `(1/2^3)^2` is equal to ______.
On multiplying ______ by 2–5 we get 25.
Find the value of n.
`6^n/6^-2 = 6^3`
Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression 3–t. What fraction of substance remains after 7 half-lives?
Supply the missing information for diagram.
Simplify:
`(1/5)^45 xx (1/5)^-60 - (1/5)^(+28) xx (1/5)^-43`