Question

The sum of the unknown number and 13 a number that will exceed the unknown number by 5 the difference between 25 and the unknown numbers the unknown number cubed a third of the unknown number plus three four times the unknown number less twice the number

Answer 1

The expression are-

(a) the sum of the unknown number and 13;  (13 + m)

(b) a number that will exceed the unknown number by five;  (m + 50)

(c) the difference between 25 and the unknown number; (25 - m)

(d) the unknown number cubed; (m³)

(e) a third of the unknown number plus three;  (m/3 + 3)

(f) four times the unknown number less twice the number.  4m - 2m

= 2m.

What is a variable or unknown number?

Variables can be used to represent variable quantities such as a varying price, the number of things you want to purchase, or even a gym membership where overall prices fluctuate based on the amount of months you want to be a member, and so on.

Some characteristics of variable are-

• Variables are frequently used in math expressions and equations.
• Variables, on the other hand, are key components of functions, in which one input, x, only has one result, generally y.
• A variable, or unknown, can be represented by any letter or symbol; it does not matter whether you use a, k, or x.
• In mathematical laws, laws, theorems, & standardized formulas, x indentifying the unknown value to be solved, whereas variables such as a, b, c, or m are employed as variables or coefficients, where the formula always works the same regardless of which integer and real number is substituted in.
• Most of the time, x and y are utilized in functions, where y represents a value typically depend on the values of the variable x.

To know more about the variables, here

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The complete question is-

Let the unknown number be 'm' . Write expressions for:

(a) the sum of the unknown number and 13  

(b) a number that will exceed the unknown number by five

(c) the difference between 25 and the unknown number

(d) the unknown number cubed

(e) a third of the unknown number plus three

(f) four times the unknown number less twice the number.