We can factor x^2-4x-21 to get (x+3)(x-7)
Notice how
3 plus -7 = -4
3 times -7 = -21
which helps us factor the trinomial
After you've factored it, we can cancel out a pair of (x+3) terms leaving us with the final answer of x-7
Note: the cancellation happens because (x+3)/(x+3) = 1. Divide anything (except 0) over itself and you'll get 1. A simpler example of this is 5/5 = 1.
40% off the original price means that Willem paid 100% - 40% = 60% of the original price.
So 60% of $60 = (60/100)$60 = 0.6 * $60 = $36.
He paid $36.
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Answer:
the answer is a
Step-by-step explanation:
70 to a 100 is 30 just remove the zero is 3
Answer: 2
Step-by-step explanation:
Answer:
260
Step-by-step explanation:
60 X 3 = 180
180+80 = 260