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Oksanka [162]
3 years ago
15

A Stairway consists of 18 stairs,each 6 5/8 inches high.what is the vertical height of the Stairway?

Mathematics
1 answer:
Klio2033 [76]3 years ago
7 0
I don't know if this is correct or not, but I did 5/8 first to get the decimal and got .625. Then adding the 6, you get 6.625. Then I multiplied 18 by 6.625, and got 119.25 inches. 

Again, I don't know if that's right, but that's how I would've solved it. 

:)
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I have to find the value of x please help me will give brainliest to correct answer​
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Answer:

C. x = 5

Step-by-step explanation:

48 = 7x + 13

-13           -13

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A certain smartphone family plan costs $55 per month plus additional usage costs. If x is the number of cell phone used above th
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y = a + b*x
where
x = months, counted from January
y = cost, dollars

The given data in the table is
Month:        Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec
x, months:       1       2     3       4      5       6     7      8      9     10     11      12
y, dollars:     ---      ---     ---     ---   1.76   2.13   ---     ---    ---      ---    ---     ---

When x = 5, y = 1.76.
Therefore
a + 5b = 1.76               (1)

When x = 6, y = 2.13
Therefore
a + 6b = 2.13              (2)

Subtract equation (1) from (2).
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b = 0.37

From (1), obtain
a = 1.76 - 5b
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The required equation is
y = 0.37x - 0.09
The graph shows the line, with the given data for May and June.

Answer: D.  y = 0.37x - 0.09

7 0
3 years ago
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