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lyudmila [28]
3 years ago
5

What are the approximate solutions of 2x^2 + x = 14, rounded to the nearest hundredth?

Mathematics
1 answer:
Slav-nsk [51]3 years ago
7 0
Hello,

2x²+x-14=0
Δ=1+4*14*2=113

x=(-1-√113)/4=-2,8839...≈-2.88
or x=(-1+√113)/4=2,40753≈2.41


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A band expects to put 15 songs on their next CD. The band writes and records ​60% more songs than they expect to put on the CD.
scoray [572]

Answer: 6

Step-by-step explanation:

From the question, we are informed that a band expects to put 15 songs on their next CD and that the band writes and records ​60% more songs than they expect to put on the CD. Therefore, the total songs will be:

= 15 + (60% × 15)

= 15 + (0.6 × 15)

= 15 + 9

= 24 songs.

During the editing​ process, ​75% of the songs are removed. The total number of songs that will be there on the final​ CD will be:

= 24 - (75% × 24)

= 24 - (0.75 × 24)

= 24 - 18

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6 songs will be there on the final CD.

3 0
3 years ago
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9514 1404 393

Answer:

  A, C

Step-by-step explanation:

The attached graph shows which lines go through the given point. They are ...

  y = 1/2x -1 . . . . 1st selection

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The equations can be found algebraically by substituting the given point in the equation and seeing if the result is a true statement.

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  d) 2 = 2/3(6) -1 = 4 -1 . . . . false

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6 0
2 years ago
An in ground rectangular pool has a concrete pathway surrounding the pool. if the pool is 16 feet by 32 feet and the entire area
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1. Let's call:
 
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 a: the height of the rectangle (2x+32)

 3. Then, we have a quadratic equation:
 
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7 0
3 years ago
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Vlad1618 [11]

Answer:

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Step-by-step explanation:

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