Question

plz answer this question​

Answer 1

Solution 9 :-

Let the number be x

Express the given numbers in fraction form :-

5^-1 = 1/5

[ By using property a^-1 = 1/a ]

Now,

According to the question

We have to find the number which when multiplied by 5^-1 gives product ( 2)^1

1/5 * x = 2

x/5 = 2

x = 2 * 5

x = 10

Hence, The number should be 10

Solution 10 :-

Let the number be x

Express the given numbers in fraction form :-

(- 15)^-1 = 1/ ( -15 )

[ By using property a^-1 = 1/a ]

Similarly,

( - 5 )^-1 = 1 / ( -5 )

[ By using property a^-1 = 1/a ]

According to the question,

-1 / 15 / x = -1/5

-1 /15 * 1/x = -1/5

-1/15 * 1/x = -1/5

1/x = -1/5 * -15/1

1/x = 3

1 = 3x

x = 1/3

Hence, The number should be 1/3 $.$

Answer 2

☯ Given Info and ☯ To Find :-

• ❍ By which number should 5-¹ be multiplied so that the product is equal to (2)¹ ?

• ❍ By which number should (-15)-¹ be divided so that the quotient is equal to (-5)-¹ ?

☯ Solution:-

★ Solution = (9)

❒ Let,

• ☯ Other no. = x

❍ As we know that,

• ☯ a^1 = 1/a

★ Then,

• ☯ 5^-1 = 1/5

❍ Then, the equation is,

➙ 1/5 × x = 2

➙ x/5 = 2

➙ x = 2 × 5

➙ x = 10

★Therefore, the other no. is 10.

★ Solution = (10)

❒ Let,

• ☯ Other no. = x

❍ As we know that,

• ☯ a^1 = 1/a

★Then,

• ☯ (-15)^-1 = 1/(-15)
• ☯ (-5)^-1 = 1/(-5)

❍ Then, the equation is,

➙ -1/15/x = -1/5

➙ -1/15 × 1/x = -1/5

➙ 1/x = -1/5 × -15/1

➙ 1/x = 3

➙ 1 = 3x

➙ x = 1/3

☯ Therefore, the other no. is 1/3 .

❍  Hence, the answer are :-

• ★ Q-9 = The other no. is 10.

• ★ Q-10 = The other no. is 1/3.

★ Hope it helps u ★