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3 years ago

This question. Help. HELP

Mathematics

2 answers:

Nata [24]3 years ago

8 0

This is what i did, i can’t say it’s correct.

Simora [160]3 years ago

5 0

Answer:

I don't think there is enough information. I've done something similar. Maybe if there was a number already in place on the right under the number 30.

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HELP LIKE RN !!! I’m on a time limit!

marysya [2.9K]

Answer:

In its Plessy v. Ferguson decision (1896), the U.S. Supreme Court ruled that “separate but equal” facilities for African Americans did not violate the Fourteenth Amendment, ignoring evidence that the facilities for Black people were inferior to those intended for whites.

Step-by-step explanation:

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2 years ago

Find the product. Hint: Box<br> (x2+3x-5) (2x- 4)

denpristay [2]

Answer:

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Step-by-step explanation:

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2 years ago

3. Cameron's car averages 25 miles

Triss [41]

Answer:15.2

Step-by-step explanation:380/25

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3 years ago

Read 2 more answers

Find The sum or difference. Simplify 3/16 + 7/16<br>

irina [24]

The answer to this is 5/8

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3 years ago

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A colony of bacteria is grown under ideal conditions in a laboratory so that the population increases exponentially with time. A

Naddik [55]

Answer:

Initial bacterias = 6006000

Altought I believe is safe to assume that the values were 192,000 and 384,000 instead of 192,192,000 and 384,384,000, in that case the initial bacterias is 6000

Step-by-step explanation:

A exponential growth follows this formula:

Bacterias = C*rⁿ

C the initial amount

r the growth rate

n the number of time intervals

Bacterias (55 hours) = 192,192,000

Bacterias (66 hours) = 384,384,000

$Bacterias(55hours)=C*r^{{\frac{55-t}{t}}} \\Bacterias (66hours) = C*r^{\frac{66-t}{t}}}$

If you divide both you can get the growth rate:

$\frac{Bacterias (66hours)}{Bacterias(55hours)}=\frac{C*r^{\frac{66-t}{t}}}{C*r^{{\frac{55-t}{t}}}} \\\frac{384,384,000}{192,192,000} =r^{\frac{66-t}{t} -\frac{55-t}{t} } \\2 =r^{\frac{11}{t}}$

So with that r = 2 and each time interval correspond to 11 years

Then replacing in one you can get the initial amount of C

$Bacterias (55hours)=C*2^{\frac{55-11}{11} } 192,192,000 = C*32\\C= 6006000$

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3 years ago