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katrin2010 [14]
2 years ago
8

What is 9:21 equal to in rational form

Mathematics
1 answer:
anzhelika [568]2 years ago
4 0

Answer:

kjhgfdsfghjkghjk

kbhjvfghdghjk

Step-by-step explanation:

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Mr. Anders was three times as old as Kate 5 years ago. Their total age now is 42 years. How old is Kate now?
katrin [286]
We can write this as two equations. Call Mr. Anders' age A and Kate's age K:
A-5=3(K-5)
A+K=42

Then solve for A in the second equation:
A=42-K

Substitute this into the first equation:
(42-K)-5=3(K-5)
-K+37=3K-15
52=4K
K=13
6 0
3 years ago
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fomenos
<span>3x+2y+4+9y=


Combine like terms:
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I believe the answer is 3x+11y+4

(That is unless you know the numbers that y & x equals)</span>
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