If x = 12 and y = 3, what is the value of |-x + 5y|?

Mathematics

1 answer:

Crazy boy [7]3 years ago

7 0

Answer:

Step-by-step explanation:

First, let's solve whats in the absolute value. If wee plug in the values of x and y, we get -(12) + 5(3) which is -12 + 15. This equals to 3. Now concerning the absolute value, it makes the value inside it always positive. And since the answer is positive, that means it remains the same.

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Solve the equation. 4y = 12

faltersainse [42]

Answer:

y = 3

Step-by-step explanation:

<u>Given equation:</u>

4y = 12

To solve the equation, the L.H.S must be equivalent to the R.H.S. To prove that L.H.S is equivalent to R.H.S, we have to know the value of "y".

The value of the y variable can be found by isolating the variable from its coefficient. In this equation, the y-variable can be isolated by dividing both sides by four. This cancels the coefficient, isolating the y-variable on one side of the equation.

⇒ 4y = 12
⇒ 4y/4 = 12/4 (Dividing both sides by 4)

Once the y-variable has been isolated, we can simplify the other side of the variable. The expression/variable/number obtained, on the other side of the equation, is the value of the y-variable.