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irinina [24]
3 years ago
6

Evaluate.

Mathematics
1 answer:
Daniel [21]3 years ago
3 0

Answer:

  d)  192

Step-by-step explanation:

Your calculator can do this for you.

Or, you can simplify to

  12\cdot\dfrac{4^{-2}}{4^{-4}}=12(4^{-2+4})=12(4^2)=192

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2(5x + 2)

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Sarah jogged 4.8 miles each day for 22 days last month. How many miles did Sarah jog in total?
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105.6

hope this helps

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Step-by-step explanation:

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According to the property √a/√b= √a/√b, which choice is equivalent to the quotient below?
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B

Step-by-step explanation:

\frac{\sqrt{125} }{\sqrt{5}} =\frac{\sqrt{25.5} }{\sqrt{5} } =\frac{5\sqrt{5} }{\sqrt{5} } =5

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Change mixed fraction to improper fraction.
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2 years ago
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How can sums and differences of cubes be identified for factoring?
Ad libitum [116K]
The sum of cubes is given as:
a³ + b³ = (a + b)(a² - ab + b²)

Example for the sum of cubes:

64x³+y³ ⇒ This is the sum of cubes because each term; 64, x³, and y³ are cube numbers

By writing each term as an expression of cube numbers, we have:
(4x)³ + (y)³ ⇒ 64 is 4³
Use the factorization of the sum of cubes, we have:
(4x + y) ( (4x)²- 4xy + y²)
(4x + y) (16x² - 4xy + y²)

--------------------------------------------------------------------------------------------------------------

The difference of cubes can be factorized as:
(x³ - y³) = (x - y)(x² + xy + y²)

Example
(125x³ - 8y³) = (5x - 2y) ((5x)² + (5x)(2y) + (2y)²)
                     = (5x - 2y) (25x² + 10xy + 4y²)
7 0
3 years ago
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