Question

by what number should minus 15 raise to power minus 1 be divided so that the quotient may be equal to minus 5 raise to power minus 1

Must solve Quickly

Answer 1

Answer:

-15^-1= -1/15

-5^-1= -1/5

let the divisor be x

-1/15÷x=-1/5

-1/15×1/x= -1/5

1/x= -1/5÷ -1/15

1/x= -1/5× -15

1/x=3

1=3x

1/3=x

so,required no. is 1/3or 3^-1

Answer 2

The number is 1/3

Step-by-step explanation:

given number

= $(-15)^-^1$

let the number by which this number is divided be x

now , according to the question

= $\frac{(-15)^-^1}{x} = (-5)^-^1$

solving for x

we get

$(-15)^-^1} = (-5)^-^1 x$

then

x = $\frac{(-15)^-^1}{-5^-^1}$

x = $\frac{1}{3}$

hence ,

The number is 1/3

#Learn more:

By what number should minus 30 raise to power minus 1 be divided to get 6 raise to power minus one

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