Question

2. Half of a number plus 5 is 11. What is the number?​

Answer 1

Answer:

1/2x+5=11

1/2x =11‐5

1/2x =6

x =2×6

x =12

Thus, the required no is 12.

Hope it helps!!

Answer 2

Answer:

The number is 12.

Step-by-step explanation:

Given,Half of a number plus 5 is 11

Here,we need to want find value of the number x.

Let the number be x.

According to question,

Half of x plus 5 is 11

So,$\frac{x}{2} + 5 = 11$

We are separating variable and constant part,

$\frac{x}{2} = 11 - 5 \\ \frac{x}{2} = 6$

By cross multiplication,

$x = 6 \times 2 \\ x = 12$

Hence, value of the number is 12.

This is a problem of Algebra.

Some important Algebra formulas:

(a + b)² = a² + 2ab + b²

(a − b)² = a² − 2ab − b²

(a + b)³ = a³ + 3a²b + 3ab² + b³

(a - b)³ = a³ - 3a²b + 3ab² - b³

a³ + b³ = (a + b)³ − 3ab(a + b)

a³ - b³ = (a -b)³ + 3ab(a - b)

a² − b² = (a + b)(a − b)

a² + b² = (a + b)² − 2ab

a² + b² = (a − b)² + 2ab

a³ − b³ = (a − b)(a² + ab + b²)

a³ + b³ = (a + b)(a² − ab + b²)

Know more about Algebra,

1) https://brainly.in/question/13024124

2) https://brainly.in/question/1169549

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