450 * 0.3 = 135 = money taken off the original price
Sale price = $315
For the reciprocal, you swap numerator and denominator.
a. The reciprocal of

is

To rationalize the irrational denominator, multiply numerator and denominator by the radical, then simplify.

b.
L = 2w
perimeter = 2l + 2w = 6w
6w = 54
w = 9
Step-by-step explanation:
x,x+1,x+2
Topic: algebraic expression
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Answer:
10a - 30b + 40
Step-by-step explanation: