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scZoUnD [109]
3 years ago
11

The sum of a rational number and a rational number is sometimes rational​

Mathematics
2 answers:
Nata [24]3 years ago
4 0

Answer:

The sum of a rational number and a rational number is ALWAYS rational

Step-by-step explanation:

N76 [4]3 years ago
3 0

Answer:

The sum of two rational numbers is rational. Here is one way to explain why it is true: Any two rational numbers can be written and , where are integers, and and are not zero. Multiplying or adding two integers always gives an integer, so we know that and are all integers.

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PLS HELP!!! BRAINLIEST AND 50 POINTS!!!!! CORRECT ANSWERS ONLY PLS<br><br> What is the value of x?
Vinil7 [7]

Answer:

x = 27

Step-by-step explanation:

39/26 = x /18

cross multiply

26x = (39)(18)

26x = 702

x = 27

8 0
3 years ago
If n is an integer, which conjecture is not true about 2n– 1? A. 2n– 1 is odd if n is positive. B. 2n– 1 is always even. C. 2n–
VladimirAG [237]
B.



Let's simply look at each conjecture and determine if it's true or false.



A. 2n– 1 is odd if n is positive: Since n is an integer, 2n will always be even. And an even number minus 1 is always odd. Doesn't matter if n is positive or not. So this conjecture is true.



B. 2n– 1 is always even: Once again, 2n will always be even. So 2n-1 will always be odd. This conjecture is false.



C. 2n– 1 is odd if n is even: 2n is always even, so 2n-1 will always be odd, regardless of what n is. So this conjecture is true.



D. 2n– 1 is always odd: 2n will always be even. So 2n-1 will always be odd. Once again, this conjecture is true.



Of the 4 conjectures above, only conjecture B is false. So the answer is B.
6 0
3 years ago
In the figure shown below, OA and OB are radio of the circle with center O. If m
SVEN [57.7K]

Answer: try the 62

Step-by-step explanation:

8 0
3 years ago
Jalyn plans to sell Algebra Nation t-shirts as a fundraiser for a new scholarship initiative. The wholesale t-shirt company char
ivolga24 [154]
This situation can be represented by a step function.If Jalyn purchases 60 shirts the total cost will be $600.At these prices it is cheaper to buy 76 shirts than it is to buy 75 shirts.
7 0
3 years ago
Solve the system of linear equations by substitution.
Goryan [66]

Answer:

hey! This was the only part of mathematics I ever enjoyed! So consider this both of our lucky days: Answer is : (2,7)

Step-by-step explanation:

basically plug in Y to the first equation as sox + 4(-x + 9) = 30

x - 4x + 36 = 30- 3x = - 6

x = 2

then plug that in to Y!

Y = -(2) + 9

so Y = 7

and our answer is : (2,7)

6 0
3 years ago
Read 2 more answers
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