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NNADVOKAT [17]
3 years ago
6

What is the unit price for a piece of cheese if 1.24 pounds costs $11.25?

Mathematics
1 answer:
Luba_88 [7]3 years ago
7 0

Answer:

$9.07 per pound

Step-by-step explanation:

Take the total cost and divide by the number of pounds

$11.25/ 1.24

$9.072580645 per pound

Rounding to the nearest cent

$9.07 per pound

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Please help. Don’t understand this math problem!
oksian1 [2.3K]

Answer:

  { 4 }

Step-by-step explanation:

First you need to solve the equation. Then you need to write the solutions as a set.

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I like to use a graphing calculator to solve equations involving roots. That helps avoid extraneous solutions. Here, the graph of the left side intersects the graph of the right side at x=4. There is exactly one solution, so the solution set is ...

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Solving this algebraically, you would isolate the radical, then "undo" it by squaring both sides of the equation. Then solve the resulting quadratic. That will have 2 solutions, only one of which will work in the original equation.

  √(5x +16) -2 = 3x -8 . . . . given

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  5x +16 = (3x -6)^2 . . . . .  square both sides

  5x +16 = 9x^2 -36x +36 . . . . expand the square

  9x^2 -41x +20 = 0 . . . . . . subtract (5x+16) to put into standard form

Factors of 9·20 = 180 that have a sum of 41 are 5 and 36, so we can rewrite this equation as ...

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  9x(x -4) -5(x -4) = 0 . . . . . . factor by pairs

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5 0
3 years ago
What’s the answer for 9x = 72
aleksklad [387]

Answer:8

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7 0
3 years ago
Please help! Explain how to solve!
Gnesinka [82]
So this one is a little tricky because in order to solve you need to combine like terms. The only problem is that two fractions don't have the same denominator.
This is what you do.
2/3 - 1/9
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= 18 - 3 / 27
= 15/ 27
Simplify.
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Now since you need to isolate the variable you have to subtract 5/9 from both sides. Since the denominator is the same you can just subtract the numerator. 
So y = 2/9
I hope this helps love! :)
3 0
3 years ago
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