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Feliz [49]
3 years ago
8

I seriously have no idea how to do these, plz help :(

Mathematics
1 answer:
Vesna [10]3 years ago
6 0

Answer:

1.)0.45

2.)0.6w

Step-by-step explanation:

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A culture is grown with a population of 45 million cells. The cell population is found to double every hour. What will the popul
Alexandra [31]
45 million * 2^{4} = 45million * 16 = 720million

Or you can use 
y=Ae^{kt}
A is equal to 45 million
To find the rate, k, we can plug in:
90million=45million*e^{k*1}

2=e^{k}
k=ln(2)
y=4.5*10^{7}*e^{t *ln2}
Knowing that t = 4
y = 4.5*10^{7}*e^{ln(2)*4}

y = 720 million
6 0
3 years ago
Read 2 more answers
Solve equation.<br> 13x + 41 = 16
sveta [45]

Answer:

x = -25/13

Step-by-step explanation:

Subtract 41 from 16 and divide the difference by 13

8 0
3 years ago
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©Peter, Bridget and Caroline share some sweets in the ratio 2:5:2. Peter gets 14 sweets. How
andre [41]

Answer: 35 sweets

Step-by-step explanation:

2:5:2= 9

peter= 2/9 x a= 14

it then turns to

9/2 x 14= 63

so bridget will get:

5/9 x 63

35 sweets

6 0
3 years ago
Consider two x distributions corresponding to the same x distribution. The first x distribution is based on samples of size n =
Tanya [424]

Answer:

The distribution with n = 225 will give a smaller standard error.

Since sigma x = sigma/√n, dividing by the square root of 225 will result in a small standard error regardless of the value of sigma.

Step-by-step explanation:

Standard error is given by standard deviation (sigma) divided by square root of sample size (√n).

The distribution with n = 225 would give a smaller standard error because the square root of 225 is 15. The inverse of 15 multiplied by sigma is approximately 0.07sigma which is smaller compared to the distribution n = 100. Square of 100 is 10, inverse of 10 multiplied by sigma is 0.1sigma.

0.07sigma is smaller than 0.1sigma

8 0
3 years ago
When using the distributive property, the expression <br><br> 3(2x - 1) would be simplified to
VARVARA [1.3K]

Answer:

6x - 3

Step-by-step explanation:

consider downloading photomath

4 0
3 years ago
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