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Tresset [83]
3 years ago
6

.........................................

Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0
$1.10/ 1 lb. the last one 6.60 ÷ 6
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Karen is 6 yrs older than her sister Michelle and Michelle is two years younger than their brother David If the sum of their age
frosja888 [35]
You are told the ages of Karen and David in terms of Michelle's age.
Let m = Michelle's age.

Michelle's age = m
Karen's age = m + 6

Michelle is two years younger than David, so David is two years older than Michelle.

David's age = m + 2

Add the ages and get 62.

m + m + 6 + m + 2 = 62

3m + 8 = 62

3m = 54

m = 18

Michelle is 18 years old

Karen is 6 years older, so she is 24 years old.

David is 2 years older than Michelle, so he is 20 years old.
4 0
3 years ago
A population of 25 rabbits on a farm have a growth rate of 2 rabbits every month. Write the exponential function. How many rabbi
enot [183]
Y=mx+b plus 900 rabbits
5 0
3 years ago
Need help will give brainlest!!
Evgesh-ka [11]

Answer:

14/20

Step-by-step explanation:

5 0
2 years ago
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. Compute the required sample size given the required confidence in the sample results is 99.74% (Z score of 3). The level of al
Shtirlitz [24]

Answer:

900 sample size

Step-by-step explanation:

To determine the sample size for a proportion, the margin of error formula is used to determine this:

E=Z_{\frac{\alpha}{2} }*\sqrt{\frac{\hat p \hat q}{{n} }

n=\hat p \hat q*(\frac{Z_{\frac{\alpha}{2} }}{E} )^2

Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, Z_\frac{\alpha }{2} is the z score.

Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5

E = 5% = 0.05, Z_\frac{\alpha }{2} = 3. Hence:

n=0.5*0.5*(\frac{3}{0.05} )^2\\\\n = 900

6 0
3 years ago
I need help with #3 plz
Nadusha1986 [10]
The correct answer is A. 10 bracelets

5 0
3 years ago
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