The simplified expression of
is 
<h3>How to simplify the expression?</h3>
The expression is given as:

Expressions raise to power 0 is 1.
So, we have:

Apply the law of indices to expression with common base

Evaluate the sum and difference

Remove the bracket

Hence, the simplified expression of
is 
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Answer: 75 meters
Step-by-step explanation: In this problem, we're asked to convert 7,500 centimeters into meters which means we use the conversion factor for centimeters and meters.
Conversion factor ⇒ <em>100 centimeters = 1 meter</em>
Next, notice that we're converting from a smaller unit "centimeters" to a larger unit "meters" and when we convert from a smaller unit to a larger unit we divide by the conversion factor.
So we divide 7,500 by the conversion factor which is 100.
7,500 ÷ 100 = 75
Therefore, 7,500 centimeters = 75 meters.
Answer:
Step-by-step explanation:

First let's multiply the 1st equation by 10.

So, we can see that the equations have the same coefficients and that implies they are equal.
So the equation has no solutions for. 
Answer:
21/8*2= 5 2/8 or 5 1/4
Step-by-step explanation:
Divide fraction so keep change flip
make them improper
21/8 * 2
42/8
5 2/8
5 1/4