A, basic calculator math hope this helps
Answer:
Yes!
Step-by-step explanation:
Let x be the tens place and y be the units place. x and y need to be odd because in other case a or b will not be odd. For example, if x=1 and y=2 a will be 21 but b will be 12 that is not odd.
Now, a+b = xy+yx. Note that xy is not x*y, is just the digits concatenated.Then, there are two cases:
If x+y<10 then xy+yx = (x+y)(x+y) (again, that is not a multiplication is x+y concatenated with x+y) and that is 11*(x+y) a multiple of 11.
If x+y≥10 then xy+yx = (x+y+1)(x+y-10) because x+y<20.
Now we are going to see that last result without the concatenation, as a sum, that is
(x+y+1)*10 + x+y-10 = 10x+10y+10+x+y-10 = 11x+11y = 11(x+y). This result is clearly a multiple of 11.
In conclusion, in all cases the result of a+b is a multiple of 11.
Answer:
The sum of two irrational numbers, in some cases, will be irrational. However, if the irrational parts of the numbers have a zero sum (cancel each other out), the sum will be rational.
Step-by-step explanation:
Answer: The road as metaphor. One great challenge in writing about roads, Ted Conover explains in the epilogue of his new road-themed nonfiction release The Routes of Man, is to avoid inadvertent use of the casual road metaphor. “So essential a part of the human endeavor are roads,” he writes, “that road- and driving-related metaphors permeate our language.
i think
Answer:
1 and 1/2 miles.
Step-by-step explanation:
You would times 3/10 by 5 or 3/10 by 5/1. Times the top by the top and bottom by the bottom which would give you 15/10 or 1 and 1/2 miles.
