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Sergio [31]
3 years ago
15

A test tube initially holds 25 bacteria. The population of bacteria in the test tube doubles each hour. Without making a graph,

determine how many hours it will take for the population of bacteria in the test tube to reach 800. Explain how you solved this problem.
Thank You >=
Mathematics
2 answers:
9966 [12]3 years ago
5 0
5 hours because 800/25=32 32= 2^5 25 X 1 = 25 25 X 2 = 50 AFTER FIRST HOUR 25 X 2^5 = 800 AFTER FIFTH HOUR
padilas [110]3 years ago
4 0
25*2^X=800
2^X=32
If you put a radical sign over each side, the index for 2^X would have to be 5 for X to disappear and the equation to be true. In other words, ({5}(√2^X)=({5}(√32)), which means that It will take 5 hours

Answer: 5 hours.
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7 0
3 years ago
The partial blueprint of a house that includes 3 bedrooms is shown below. The scale is 2.75 inches : 3 feet. What is the actual
nordsb [41]

The partial blueprint of a house that includes 3 bedrooms is shown below. The scale is 2.75 inches : 3 feet. What is the actual length and width of Bedroom 3 in feet?

Bedroom 1 w=9.17; l= 11 in

Bedroom 2 w=7.33 in; l= 12.83

Bedroom 3 w= 11 in; l= 14.67 in​

______________________________________

___________

2.75 inches : 3 or 2.75 in / 3 feet

________________

Can you see the updates?

______________

Bedroom 3 w= 11 in; l= 14.67 in​

11 in * 3 feet / 2.75 in = 12 feet

14.67 in​ 3 feet / 2.75 in = 16 feet

_________________________

Answer

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3 0
1 year ago
2. The electrical resistance R of a wire varies inversely with the square of its diameter d. If a wire with a
Mariulka [41]

Answer:

0.225 \Omega =225 m\Omega

Step-by-step explanation:

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R= {{0.4\cdot 9}\over{16}} \Omega = 0.225 \Omega

4 0
3 years ago
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