Answer:
x^2 -81
Step-by-step explanation:
(x+9)(x-9)
FOIL
first x*x = x^2
outer -9x
inner 9x
last -9*9 = -81
Add them together
x^2 -9x+9x -81
Combine like terms
x^2 -81
Answer: 49
Step-by-step explanation: angle BCA is congruent to angle DCA therefore they are the same measure
Answer:
- 12=0.005×w
- the number is 2400
Step-by-step explanation:
An appropriate representation of the problem can be had by using a variable to represent "what number" and then using the math equivalent symbols for the English words. If "what number" is represented by w, then we want to translate ...
0.5% of w is 12 . . . . English
0.005 × w = 12 . . . . . . . matches choice 1
__
This can be solved by multiplying by 200
200(0.005w) = 200(12)
w = 2400
The number is 2400.
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Answer: <u><em>
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
Missing info ! Try to get it posted so we can help......
