The correct answer is: [D]: "no real solutions" .
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The only "answers" would be: " <span>± 6i " ;
</span> → <span>both of which are not "real solutions" .
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</span>
Oldest = 2x
Middle = x + 5
Youngest = x
2x + x + 5 + x = 57
combine like terms
4x + 5 = 57
subtract 5 from both sides
4x = 52
divide both sides by 4 to isolate x
x = 13
Oldest = 2x = 2(13) = 26
Middle = x + 5 = 13 + 5 = 18
Youngest = x = 13
You want to know how long it'll take for the bacteria to grow
to (800/500) = 1.6 times their initial population.
The number of double-times it'll take is
[ log(1.6) / (log(2) ] = 0.6781 .
The double-time for these particular critters is 12 hours,
so it'll take them
0.6781 x 12 hours = 8.137 hours
= 8 hours 8.2 minutes .
Answer: 3:4
Step-by-step explanation:
If you divide both 30 and 40 by 10 you get 3 and 4
Since it says blue:green the answer is 3:4
