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cupoosta [38]
3 years ago
11

I have enough money to but five regular priced CDs and have $6 left over. However, all CDs are on sale today for &4 less tha

n usual. If I borrow $2, I can afford nine of them. How much are CDs on sale for today.

Mathematics
1 answer:
pshichka [43]3 years ago
6 0
Think by this way. Equation

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Answer:

1.39

Step-by-step explanation:

nearest hundredth is 9

therefore 1.39 ig

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Describe situation in which a variable could be used to present any whole number greater than zero
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3 years ago
Can some one help me please
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Answer:

2x²√13

Step-by-step explanation:

Step 1:  When there is multiplication under a square root sign (also called a radical sign), you can rewrite the expression as the product of two square roots, like this...

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Step 2:  x^4 = x²x², so it's the same thing as saying (x²)², or "x-squared, squared".  Taking the square root of it leaves just x-squared, so this simplifies to

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Step 3:  When taking the square root of a number that is not a perfect square, you need to do a factor tree to see if you can break the number up into a product of perfect squares, or a perfect square multiplied by a prime number.

52 is an even number, so we an at least divide by 2.  

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                  (26)(2)

2 is a prime number, so we don't break that down any further.

26 is even so it is also divisible by 2,

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     (13)(2)(2)

  which we can write as (13)(4)     (groups pairs of numbers together)

(2)(2) is 4, which results in a perfect square, so we can rewrite √52 as

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So √(52x^4) breaks down to (√52)(√x^4), which further breaks down into

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We simplify the expression to 2x²√13

3 0
3 years ago
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