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jeka57 [31]
3 years ago
12

Instructions: Use proportions to answer each of these word problems. You can use a calculator.

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
3 0
If i do all that, you need to give me more point bc this needs more points
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Can anyone help ? :(
V125BC [204]

Answer: B 65 and C 275

Step-by-step explanation:

Just divide by 3 then multiply by 5

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The probability of rolling an even number with a six-sided number cube
Vinvika [58]

Answer:

Equally likely

Step-by-step explanation:

Equally likely means that it’s a 50% percent chance on both sides meaning that equally likely Is the answer.

3 0
2 years ago
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Are the ratios 1:2 and 10:20 equivalent <br><br><br>YES OR NO​
nignag [31]

Answer:

yes

Step-by-step explanation:

10:20=

5 times 2= 10

5 times 4= 20

2:4=

1 times 2=2

2 times 2= 4

1:2

6 0
2 years ago
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Minor surgery on horses under field conditions requires a reliable short-term anesthetic producing good muscle relaxation, minim
andreev551 [17]

Answer:

p_v =P(t_{74}    

If we compare the p value and a significance level for example \alpha=0.1 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, so we can conclude that the true mean it's not significantly less than 20 min.

Step-by-step explanation:

Data given and notation    

\bar X=18.81 represent the average lateral recumbency for the sample    

s=8.4 represent the sample standard deviation    

n=75 sample size    

\mu_o =20 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 apply a left tailed  test.  

What are H0 and Ha for this study?    

Null hypothesis:  \mu \geq 20  

Alternative hypothesis :\mu < 20  

Compute the test statistic  

The statistic for this case is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)    

t-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:    

t=\frac{18.81-20}{\frac{8.4}{\sqrt{75}}}=-1.227

The degrees of freedom are given by:

df=n-1=75-1=74    

Give the appropriate conclusion for the test  

Since is a one side left tailed test the p value would be:    

p_v =P(t_{74}    

Conclusion    

If we compare the p value and a significance level for example \alpha=0.1 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, so we can conclude that the true mean it's not significantly less than 20 min.

3 0
3 years ago
Find a and b: (10-4i)-(a+bi)=(6-6i)
cestrela7 [59]

Answer:

look at attached image, hope this helps! :)

7 0
3 years ago
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