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2 years ago

Change 0.61 into a fraction

Mathematics

1 answer:

OleMash [197]2 years ago

4 0

Answer:

I think the answer is 61/100

Step-by-step explanation:

Because u just convert .61 into 61 then put it over 100 and if you can simplify.

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Solve the inequality -5y-7<28

slava [35]

Answer: IDK sssrry

Step-by-step explanation:

3 0

2 years ago

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment. Find the margin of error for the 95% confiden

Vlad [161]

Answer:

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment.

This means that $n = 2161, \pi = \frac{1214}{2161} = 0.5618$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a p-value of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Margin of error:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.96\sqrt{\frac{0.5618*0.4382}{2161}}$

$M = 0.0209$

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

4 0

2 years ago

The factory produces 4 gallons of orange juice for every 24 gallons of apple juice but is use this ratio to answer the question

kkurt [141]

Answer:

For every 1 gallon of Orange Juice the factory makes 6 gallons of Apple Juice so id say the ratio is 1:6

Step-by-step explanation:

8 0

2 years ago

The value of y varies directly with x. If x=3, then y=21. What is the value of x when y=105?

Aneli [31]

21/7 = 3 so then, 105/7 = x which is 15

3 0

2 years ago

Engineers want to design brakes that will reduce stopping distances by 10%. How would this change the equation relating speed s,

AlekseyPX

For the answer to the question above, we will use this formula to solve this problem
d = kv^2 

plugging in, 
4.2 = k*10^2 
k = 0.042 

d = 0.042v^2 

the revoised equation will be 
d = 0.9*0.042v^2 , i.e. 

d = 0.0378v^2

I hope my answer helped you

8 0

2 years ago