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stepan [7]
3 years ago
8

Helppppp with 4A and 4B and 5 10 points!!!!!!

Mathematics
1 answer:
Arisa [49]3 years ago
5 0
4a is humpback whales, 4b is I DON'T KNOW, 
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Using the associative property, 9+(6+3)=(9+6)+3. Is 9-(6-3) equal to (9-6)-3? Explain.
Naya [18.7K]

Answer:

No it's not

Step-by-step explanation:

(9-6)-3 is not equal to 9-(6-3)

The first equation (9-6)-3 = +(9-6)-3 = (3)-3 = 0

The second equation 9-(6-3) = 9 - (3) = 6

Because the equation in the bracket must be solved first so these 2 equations will not equal to other.

Hope this help you :3

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3 years ago
A laboratory culture contains 150 bacteria. After twenty minutes, the culture contains 300 bacteria. After one hour, the culture
erma4kov [3.2K]

This type of situation applies first order type of equation.  In this case, the equation is ln( A0/A1) = kt. A is the number of bacteria cultured. A0 is equal to 150. when A1 is 300, t is 20 minutes. that is ln (150/300) = k *20 the other condition is represented by ln (A0/1200) = 60k. k is equal to -0.0347. hence the first order equation is equal to ln (150/A1) = -0.0347 t
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4 years ago
PLS HELP BRAINLIEST AND 100 POINTS PLS HELP FOR ALL I WILL GIVE BRAINLIEST TYYYSMMM
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Answer + Step-by-step explanation:

Check the illustration that I provided .

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Step-by-step explanation:

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