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spin [16.1K]
1 year ago
8

Please look at the attachment and answer my question :(

Mathematics
2 answers:
pshichka [43]1 year ago
8 0

Answer:

  • The number at B is 10.6

Step-by-step explanation:

Let the number at B be x.

We know that distance between two points on the number line is the absolute value of the difference of numbers at those points.

Then distances representing the lengths of segments AB and BC are:

  • AB = x - 9
  • BC = 13 - x

We are given the ratio of segments:

  • AB/BC = 2/3

Substitute and solve for x:

  • (x - 9)/(13 - x) = 2/3
  • 3(x - 9) = 2(13 - x)
  • 3x - 27 = 26 - 2x
  • 3x + 2x = 26 + 27
  • 5x = 53
  • x = 53/5
  • x = 10.6

dem82 [27]1 year ago
3 0

Answer:

AB / BC = 2 / 3

A equals 9 and C = 13

AC = 13 - 9 = 4

AB + BC = 13

A) AB + BC = 4

B) AB / BC = 2/3   Therefore BC = AB / (2/3)  

B) BC = 1.5 AB  

A) BC = 4 - A/B

Multiplying equation A) by -1

A) -BC = -4 + AB then we add equation B)

B) BC = 1.5 AB then adding both equations

0 = 2.5 AB -4

2.5 AB = 4

AB = 1.6

Since A = 9 then the number at B is 9 + 1.6

equals 10.6

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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3 years ago
In the third quarter of 2001, the median sale price for a single-family
snow_tiger [21]

Answer:

The % increase is 7.179 but see the remark I made below. What I have given and what it could be is a rounding error. Less than 2 dollars error is not much when you are calculating something for someone just to show them how to do it.

Step-by-step explanation:

242,555 * x/100 = 259,970           Multiply by 100

242,555 * x = 259970 * 100

242,555 * x = 25997000            Divide by 242555

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What you want is 7.179%

If you take 7.179% of 242,555 and add it onto 242555 you should get 259,970

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17413.02 + 242555 = 259968.02

Why isn't it exact. I'm out just about 2 whole dollars. The reason is that the % isn't exact. It's only out to 3 decimal places which apparently is not enough. You can go over my numbers if you want more exactness us use something that is rounded to 7.180 if you like.

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Step-by-step explanation:

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