Answer:
4829
Step-by-step explanation:
If the first digit is half of the second, that means the second is 2 times the first
So let's solve this algebraically...
The first digit could be called <em>a</em>
The second digit would have to be 2 times a (2a)
We can call the 3rd digit b
Since the sum of the second and third digit is 10, the equation would be this..
2x + b = 10, which is the same as b = 10 - 2x
The fourth digit is this equation
2x + 1
So the four digits are...
x, 2x, 10-2x, 2x+1
They are all equal to 23, which means...
x + 2x + 10-2x + 2x +1 = 23
After simplifying...
3x + 11 = 23
3x = 23 - 11
Which means...
3x = 12, x = 4
After you plug all that back into the prior equation you should get
first digit = 4 second digit = 8 third digit = 2 fourth digit = 9
Thank me later :)
(or just mark brainliest)
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