Something divided by 3 that equals 14

n = 42

Step-by-step explanation: To solve this, we can translate the question into an equation. First we have the word "something" which represents what we don't know so we can give that the variable n.

Next we have "divided by 3" which means we will put 3 under n so we will have n/3. Then, we know that it equals 14 so we have n/3 = 14.

Since n is being divided by 3, to get n by itself, we need to multiply both sides of the equation by 3. On the left side, the 3 and 3 cancel and we have n. On the right side, 14 x 3 is 42 so n = 42.

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places