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vovikov84 [41]
2 years ago
7

If x + y is rational, must x and y each be rational?

Mathematics
1 answer:
In-s [12.5K]2 years ago
8 0
No.

If a rational number can be an integer, x and y could be 5.5 and .5, or something that adds up to (number).0.  This means, if the two non-rational numbers add up, they could be irrational, but the result isn't.
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Find the slope of line passing through the two points, (7, 1) and (-2, 1).
Mamont248 [21]

Answer: m = 0

Step-by-step explanation:

Slope (m) = y2 - y1/,x2 - x1 : meaning increase in y divided by increase in x . it can also be written as ∆y/∆x

y1= 1, y2 = 1, x1 = 7, x2 = -2

Substitute for those values in the equation above

m = 1 -1/-2 - 7

= 0/-9

Therefore,

m = 0

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3 years ago
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Leno4ka [110]
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Katena32 [7]

Answer:

  C.  0 ≤ X ≤ 40

Step-by-step explanation:

The equation is valid for positive values of x not greater than 40.

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2 years ago
A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 higher than in the firs
Rus_ich [418]

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3 years ago
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Step-by-step explanation:

Hope this helps! :)

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