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ankoles [38]
2 years ago
13

Please help and tell me how you got the answer I will give brainliest

Mathematics
1 answer:
kati45 [8]2 years ago
7 0

Answer:

32%

Step-by-step explanation:

136/200 broke. We want to know how many eggs out of 100 broke, so we need to set up an equivalent proportion.

136/200=x/100

Cross multiply.

13600=200x

Divide both sides by 200.

68=x

Since 68 percent broke, that means the other 32 percent survived.

HTH :)

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4.7×2.65 4.7 times 2.65
kramer

Answer:

The answer to 4.7 times 2.65 equals 12.455

4 0
3 years ago
Historically, the mean yield of corn in the United States has been 120 bushels per acre with a standard deviation of 12. A surve
Illusion [34]

Answer:

z=\frac{125-120}{\frac{12}{\sqrt{40}}}=2.64    

P-value

Since is a two sided test the p value would be:  

p_v =2*P(z>2.64)=0.0082  

And the best answer would be

B 0.0082

Step-by-step explanation:

Data given and notation  

\bar X=125 represent the mean height for the sample  

\sigma=12 represent the population standard deviation

n=40 sample size  

\mu_o =120 represent the value that we want to test

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is 120 or not, the system of hypothesis would be:  

Null hypothesis:\mu = 120  

Alternative hypothesis:\mu \neq 120  

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{125-120}{\frac{12}{\sqrt{40}}}=2.64    

P-value

Since is a two sided test the p value would be:  

p_v =2*P(z>2.64)=0.0082  

And the best answer would be

B 0.0082

4 0
3 years ago
This set of points is on the graph of a function.
vagabundo [1.1K]

Answer:

A and D

Step-by-step explanation:

i hope i did this righti tried my best

3 0
3 years ago
Select the values that make the inequality -c>-4 true.
Vera_Pavlovna [14]

Answer:

c < 4

Step-by-step explanation:

whenever you divide or multiply an inequality by a negative it is a rule that you must reverse the inequality symbol

so -c > -4 means you must divide or multiply by a negative one to get 'c' by itself; therefore it becomes c < 4

6 0
2 years ago
Nancy is knitting a scarf. It takes her 0.2 of an hour to knit each inch of the scarf. She wants the length of the scarf to be 6
ehidna [41]

Answer:

2 hours

Step-by-step explanation:

60 *20

3 0
3 years ago
Read 2 more answers
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