Question

the product of two rational number is 21, if one of them is 3/7, then the other is​

Answer 1

Answer:

first rational no. 3/7

second rational number.

let =x

x×3/7=21

x=21×7/3

x=49

so' second rational number =x=49

Answer 2

Answer:

49

Step-by-step explanation:

Given:

• Sum of two rational number is 21.

• One rational number is 3/7.

To find:

• Another rational number =?

Procedure:

We know that sum of the rational number is 21.

let unknown number be x.

Forming an equation, we get:-

$\implies \sf \: \dfrac{3}{7} \times x \: = 21$

Multiply both sides by 7/3.

$\implies \sf \bigg( \dfrac{7}{3} \bigg) \times \bigg( \dfrac{3}{7} x \bigg) = \bigg(\dfrac{7}{3} \bigg) \times 21$

$\implies \sf \: x = 7 \times 7$

$\implies \sf \: x = 49$

So, unknown number is 49.

You need to know that :-

• polynomials : Polynomial are variable based dialect in the language of maths.

• In a common language , polynomials are defined as a string of variables and numbers put together.

• Highest power of a polynomial is called degree of polynomial.

• A constant polynomial is nothing but a monomial with degree zero.

• Equation: A condition or a constraint placed on x and y coordinates.

• Curve: A union of points that satisfy a particular condition.

• Remainder theorem: When p(x) is divided by (x - a) then the remainder is given by p(a).