The sum of the digits of a two-digit number is 11. If the digits are reversed, the new number is 45 less than the original numbe r.
1 answer:
Answer:
83.
Step-by-step explanation:
Let the digits be x and y so the number is xy.
x + y = 11
The new number is 45 less than the original number so
10y + x = 10x + y - 45
-9x + 9y = -45
-x + y = -5
x + y = 11 Adding:
2y = 6
y = 3
and x = 11/3 = 8.
So the number is 83.
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Step-by-step explanation:
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Question:
The diameter of a construction pipe is 7ft. If the pipe is 35ft long, what is the volume. (Use 3.14 for pie and round your answer to the nearest cubic foot.)
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But it should be right...
Answer:
2(x+6) = 2(6+13x)
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x = 0
