Help me plzzzzz!!!!!!!

Mathematics

1 answer:

Elodia [21]3 years ago

5 0

Lock key is 042

Step-by-step explanation:

Step 1: Through each clue, eliminate numbers to find the lock.

738 - all digits are wrong

⇒ the numbers are not 7, 3 or 8

380 - one digit is right but in the wrong place

⇒ since 3 and 8 are wrong digits, 0 is the right digit but place is wrong

682 - one digit is right and in its place

⇒ since 8 is a wrong number, the right digit could be 6 or 2

614 - one digit is right but in the wrong place

⇒ since 6 was in the same position in the previous clue, it can be concluded that 6 is also wrong.

206 - two digits are right but are in the wrong place

⇒ from the above clues 0 and 2 are the right digits.

∴ 0, 2 and 4 are the right digits.

Step 2: Find the positions of the digits.

0 can't be in 2nd or 3rd position based on the clues.

2 should be in the 3rd position.

⇒ Order is 042

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The x-intercept = (0, 0) and (8, 0), Rate of function is 50 and as the price of erasers increasing the company's profit increasing and when price of the eraser decreasing the price the company's profit decreasing.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have a graph of a function:

From the graph:

x-intercept = (0, 0) and (8, 0)

Maximum value of the graph = 270 at x = 4

Increasing in the interval x ∈ (0, 4)

Decreasing in the interval x ∈ (4, 8)

As the price of erasers increasing the company's profit increasing and when price of the eraser decreasing the price the company's profit decreasing.

Rate of function = (270-120)/(4-1) = 50

Thus, the x-intercept = (0, 0) and (8, 0), Rate of function is 50 and as the price of erasers increasing the company's profit increasing and when price of the eraser decreasing the price the company's profit decreasing.