If x³ + x²-ax+bis divisible
(x² -x), write the values of a and b
Answers
Step-by-step explanation:
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Given :-
Baichung’s father is 26 years younger than Baichung’s grandfather and 29 years older than Baichung. The sum of the ages of all the three is 135 years.
To Find :-
Age of each
Solution :-
Let the age of Baichung be B
Age of father = B + 26
Age of grandfather = B + 26 + 29
Age of grandfather = B + 55
Now
(B) + (B + 26) + (B + 55) = 135
3B + 81 = 135
3B = 135 - 81
3B = 54
B = 54/3
B = 18
Now
Age of Baichung = 18 years
Age of his father = 18 + 26 = 44 years
Age of grandfather = 18 + 55 = 73 years
Answer:
Step-by-step explanation:
A number is divisible by 45, if it's divisible by 9 and 5!
23a7b = divisible by 5, if b = 0 (or) 5
If b = 0 then 23a7b is divisible when
=>2 + 3 + a + 7 + b
=> 12 + a + 0
=> 12 + a is divisible by 9! It's divisible when a = 6!
If b = 5, then 23a7b is divisible by 9 when =>2 + 3 + a + 7 + b
=>12 + a + 5
=>17 + a is divisible by 9. It's divisible when a = 1
According to options, Answer is A) 6