The value of y-x is (-3)
<u>Solution:</u>
Given: The value of x-y=3
To find: The value of y-x

Let's multiply the equation (1) by (- 1) on both sides,


On multiplying the sign,

The above equation can also be written as,

<u>Multiplication of signs:</u>




In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.
<span>The place value positions to either side of a number are related because they are 10 times smaller or ten times bigger — a number in the hundreds column in ten times bigger than the same number in the tens column, for example.</span>
Answer:

Step-by-step explanation:

Answer:
408,506
Step-by-step explanation:
The distance from the top of the mirror to the ceiling once the mirror is hung on the wall is 21 inches
The dimension of the mirror is given as:


From the center of the mirror to the floor of the wall, the distance is:

So, the distance to the top of the mirror will be:

Substitute 24 for height


Convert feet to inches



The distance from the top of the mirror to the ceiling is the difference between the height of the wall and 75 inches.
So, we have:

Convert feet to inches



Hence, the distance is 21 inches
Read more about lengths at:
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