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kari74 [83]
3 years ago
5

Please help I would appreciate it

Mathematics
1 answer:
puteri [66]3 years ago
5 0

Answer:

B. 95

Step-by-step explanation:

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Bingel [31]
I am pretty sure it is crust
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3 years ago
How many pounds of chamomile tea that costs $18.50 per pound must be mixed with 18 lb of orange tea that costs $12.23 per pound
Rasek [7]

Answer:

The amount of chamomile tea that has to be used in order to obtain a mixture that costs $14.32 per pound is 8.997 pounds

Step-by-step explanation:

In order to find out the amount of chamomile tea that must be used in the mixture to obtain a 14.32 $ per pound, we can use an weighted average where the price points for each kind of tea are the weights and "c" is the amount of chamomile that we have to use in order to obtain the price per pound that we want. So we have:

(18.5*c + 12.23*18)/(c + 18) = 14.32

18.5*c + 220.14 = 14.32*(c+18)

18.5*c + 220.14 = 14.32*c + 257.76

18.5*c - 14.32*c = 257.75 - 220.14

4.18*c = 37.61

c = 8.997 lb

8 0
3 years ago
ga political candidate has asked you to conduct a poll to determine what percentage of people support her. if the candidate only
Vedmedyk [2.9K]

Answer: 151

Step-by-step explanation:

if prior population proportion is unknown , then the formula is used to find the sample size :

n=0.25(\frac{z_{\alpha/2}}{E})^2

, where z_{\alpha/2} = Two tailed critical value for significance level of \alpha.

E = Margin of error.

Given : margin of error = 8%= .08

For 95% confidence level , two tailed critical value = 1.96

Now, the required sample size :

n=0.25(\frac{1.96}{0.08})^2\\\\=0.25(24.5)^2\\\\=150.0625\approx151

Hence, the size of the sample needed = 151.

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3 years ago
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Area= pi x r^2
= pi x 13^2
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= 530.929
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