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bezimeni [28]
3 years ago
10

If a is a rational number and b is a rational number, then the product ab must be

Mathematics
2 answers:
alukav5142 [94]3 years ago
8 0
The best way to answer this is to find counterarguments for each answer to eliminate them as a possibility. ab doesn't have to be an integer, 2.5*3=7.5 . That's also not an imaginary number so that's out. And that's also not an irrational number so that's out too. Only choice left is rational number.
DIA [1.3K]3 years ago
8 0

By definition, a rational number can be expressed as a fraction with integer values in the numerator and denominator (denominator not zero). So, multiplying two rationals is the same as multiplying two such fractions, which will result in another fraction of this same form since integers are closed under multiplication. Thus, multiplying two rational numbers produces another rational number. 

So in this case your answer would be A. 

Hope I helped!!!


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Solve the system by graphing. (Enter your answers as a comma-separated list. If the system is inconsistent, enter INCONSISTENT.
seraphim [82]

Answer:

(4,2). DEPENDENT

Step-by-step explanation:

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6 0
3 years ago
Please help me! I'll give brainliest!
german
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6 0
3 years ago
Read 2 more answers
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mart [117]
I believe you meant:  Use completing the square to determine the center and radius of the circle represented by this equation:   <span>X^2+y^2-10x+6y=15

x^2 - 10x + 25 - 25 + y^2 + 6y + 9 - 9 = 15
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8 0
3 years ago
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maxonik [38]

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7 0
2 years ago
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A student solved log4(2x – 12) = 3, as shown. Which did you include in your answer?
siniylev [52]

Answer:

x = 38

Step-by-step explanation:

using the law of logarithms

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log_{4}(2x - 12) = 3 ⇒ 2x - 12 =  4^{3} = 64

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x = 38


5 0
3 years ago
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