Scientific notation is usually written in powers of tens, in this case:
Answer:
a²(b² - 2b) = a²b² - 2a²b
- a²(b² - 2b) is odd but -2a²b is the even number
=> a²b² must be the odd (because an odd number minus an even number equals an odd number)
=> a and b are odd (proven)
The perimeter is: " 331. 2 cm " .
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<u>Note</u>:
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Perimeter = 34 cm + 34 cm + 95.2 cm + 168 cm = 331.2 cm .
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<span>Ron
walks 0.5 mile on the track in 10 minutes.
Unit rate = 0.5 miles per 10 minutes
Solve:
=> 0.5 miles / 10 minutes = 0.05 miles per minute
Stevie walks 0.25 mile on the track in 6 minutes.
Unit rate = 0.25 miles for 6 minutes
Solve
=> 0.25 miles / 6 minutes = 0.042 miles per minutes
Who walks faster than the 2 of them?
=> 0.05 miles / m is greater than
0.042 miles per minute
Thus, Ron walks faster than Stevie
</span>
To simplify this expression we first need to apply the distributive property of the product. This means that we need to multiply the number outside of the parenthesis by each term of the sum inside the parenthesis. This is done below:
The simplified expression is "-20+12w".