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noname [10]
3 years ago
10

estimate a 15% tip on a dinner bill of $49.75 by rounding first bill amount to the nearest ten dollars

Mathematics
1 answer:
AlladinOne [14]3 years ago
7 0

Answer:

60.00

Step-by-step explanation:

49.75 + 15%(7.46) = 57.21

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Black_prince [1.1K]

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kramer

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Step-by-step explanation:

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3 years ago
Which is a factor of 144 - 49x²?<br> O 12-7x²<br> O 72-7x²<br> O 12-7x<br> O 72 + 7x
lisabon 2012 [21]

Answer: C: 12-7x

Step-by-step explanation:

This expression is a good example of the difference of two squares, as 144 is the square of 12, while 49x² is the square of 7x.

Any difference of two squares a^2-b^2 can be factored into the sum of their square roots times the difference of their square roots (a+b)(a-b).

Let's factor our expression.

144-49x^2=(12+7x)(12-7x)

Out of all the options given, only 12-7x is a factor. Hence, option C is correct.

4 0
1 year ago
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