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2 years ago

Find the total surface area of a cylinder. Use 3.14 for pi

Mathematics

1 answer:

Kitty [74]2 years ago

6 0

Answer:

it is 847.80 ft

i done the quiz

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A bottle and its cork cost $1.20 of the bottle costs $1.10 more than the cork. What is the cost of bottle and of the cost of cor

777dan777 [17]

The cost of the bottle alone costs $1.15, and the cork costs $0.05, you add them together and you get $1.20. That is how the bottle costs $1.20.

8 0

2 years ago

Identify the method that will be used to solve for x for each equation. 4x = 20

kotegsom [21]

Divide 4 on each side and X will be = to 5

4x/4 = 20/4
X = 5

3 0

2 years ago

Can someone help me solve these problems?

kicyunya [14]

The answer is in the image and this question is from exponents

3 0

3 years ago

To the relation a function Justify your answer

ahrayia [7]

Answer:

No, because two points with the same y value have different values.

<h3>PLEASE MARK ME BRAINLIEST</h3>

7 0

3 years ago

A car company took a random sample of 85 people and asked them whether they have a plan to purchanse an electrinic car in the ne

lutik1710 [3]

Answer:

We have 96% of confidence that the true proportion of people who responded that they have a plan to buy one electric car is between (0.121 and 0.303).

Step-by-step explanation:

For this case the estimated proportion of people who responded that they have a plan to buy one electric car is given by:

$\hat p = \frac{X}{n}= \frac{18}{85}=0.212$

Where X represent the number of people who responded that they have a plan to buy one and n represent the sample size selected

We know that the confidence level for this case is 96% of confidence, then our significance level would be $\alpha=1-0.96=0.04$ and $\alpha/2 =0.02$ . And the critical value would be:

$z_{\alpha/2}=-2.05, z_{1-\alpha/2}=2.05$

The confidence interval for the true proportion is given by this expression:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

Replacing the data given we got:

$0.212 - 2.05\sqrt{\frac{0.212(1-0.212)}{85}}=0.121$

$0.212 + 2.05\sqrt{\frac{0.212(1-0.212)}{85}}=0.303$

We have 96% of confidence that the true proportion of people who responded that they have a plan to buy one electric car is between (0.121 and 0.303).

6 0

3 years ago