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Amanda [17]
3 years ago
6

23,45 seven .9 plus 38seven .15

Mathematics
2 answers:
Ainat [17]3 years ago
8 0
 the answer is 14
high school kid

Vsevolod [243]3 years ago
6 0

Answer:

23845.05

Step-by-step explanation:

calculator

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Which ratio forms a proportion with 7/14
Mazyrski [523]

Answer:

7 : 14, or simplified, 1 : 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The doubling period of a bacterial population is 20 20 minutes. At time t = 100 t=100 minutes, the bacterial population was 9000
Nuetrik [128]

Answer:

The initial population was 2810

The bacterial population after 5 hours will be 92335548

Step-by-step explanation:

The bacterial population growth formula is:

P = P_0 \times e^{rt}

where P is the population after time t, P_0 is the starting population, i.e. when t = 0, r is the rate of growth in % and t is time in hours

Data: The doubling period of a bacterial population is 20 minutes (1/3 hour). Replacing this information in the formula we get:

2 P_0 = P_0 \times e^{r 1/3}

2 = e^{r \; 1/3}

ln 2 = r \; 1/3

ln 2 \times 3 = r

2.08 \% = r

Data: At time t = 100 minutes (5/3 hours), the bacterial population was 90000. Replacing this information in the formula we get:

90000 = P_0 \times e^{2.08 \; 5/3}

\frac{9000}{e^{2.08 \; 5/3}} = P_0

2810 = P_0

Data: the initial population got above and t = 5 hours. Replacing this information in the formula we get:

P = 2810 \times e^{2.08 \; 5}

P = 92335548

3 0
3 years ago
Ericka observed the total variation in the water level over 6.2 years to be −13.64 mm. She compared this to the average annual t
vekshin1

Answer:

In the area that she observed, the water level fell 13.64mm over 6.4 years, for an average annual rate of change of: -13.64 ÷ 6.2 = -2.2 mm/ year.

8 0
3 years ago
What is the square and square root of 9x⁸​
adelina 88 [10]

Answer:

square: (9x^8)^2= 81x^16

square root: (9x^8)^1/2 = 3x^4

Step-by-step explanation:

the ^ mean that the following num should be like this ​⁸​

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3 years ago
What is the ratio of melvins weight to the total weight of the two boys
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Ratio of volume is a cubed: b cubed
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