A student was required to multiply a number by 4 and add 6 to it. Instead he added 6 to it first and then multiplied by 4. What should he do to his answer to get the correct one? If the wrong answer is 36, what is the correct one?



If n is the number, the wrong expression is :

.

The correct expression is :

.

He needs to the wrong expression to get the correct one.

The correct answer is

.

The correct answer is 18

the correct expression is

Step-by-step explanation:

let the number be n

therefore  if he is required to multiply n by 4 and added to 6 we have

given that he did otherwise by adding 6 to n and multiply by 4 we have

Firstly we need to solve for n in equation 2

Dividing both sides by 4 we have

In order to solve for the correct answer let us input n=3 in equation 1 we have

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)

19

step-by-step explanation: