Answer:
The number is 91
Step-by-step explanation:
Let x be the ones place digit and y be the tens place digit,
Then the number would be 10y + x,
We have,
y - x = 8
Possible values of y and x = { (8, 0), (9, 1) }
∵ 0 is not the digit of the number,
Hence, y = 9 and x = 1
Therefore, required number = 10(9) + 1 = 90 + 1 = 91
20x^2+50 = -40x^2+110x [ Taking x as the unknown positive integer ]
Answer:
4
Step-by-step explanation:
Yeah if you don't know this one... you're... special.
Because we know x stays constant, draw a point on (0,5). then draw a line extending up and down from (0,5) indefinitely because no matter what y is, x always stays the same--5.
Two neon lights turned on at same time.
one blinks other blinks
every 4 seconds every 6 seconds.
ob ob
4 : 6
60.
60 / 4 = 15
60 / 6 = 10.
15+ 10 = 25 times.
