Advertisements
Advertisements
प्रश्न
By what number should 5−1 be multiplied so that the product may be equal to (−7)−1?
Advertisements
उत्तर
Expressing in fraction form, we get:
5−1 = 1/5 (using the property a−1 = 1/a)
and
(−7)−1 = −1/7 (using the property a−1 = 1/a).
We have to find a number x such that
`1/5x=(-1)/7`
Multiplying both sides by 5, we get: `x=-5/7`
Hence, 5−1 should be multiplied by −5/7 to obtain (−7)−1.
APPEARS IN
संबंधित प्रश्न
Simplify.
`(25 xx t^(-4))/(5^(-3) xx10xxt^(-8)) (t != 0)`
Simplify:
Write the following in exponential form:
Express the following as a rational number in the form \[\frac{p}{q}:\]
(−7)−1
Express the following as a rational number in the form \[\frac{p}{q}:\]
Express the following rational numbers with a negative exponent:
Express the following rational numbers with a positive exponent:
Simplify:
Find x, if \[\left( \frac{1}{4} \right)^{- 4} \times \left( \frac{1}{4} \right)^{- 8} = \left( \frac{1}{4} \right)^{- 4x}\]
Cube of \[\frac{- 1}{2}\] is
