2 years ago

How many cards did Benny start with

Mathematics

1 answer:

Aliun [14]2 years ago

7 0

I think the correct answer may be 70, add 35 twice to get a whole half

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A model of an airplane is built using the ratio of similarity 1 to 50. The airplane is 60feet long. What is the length of the mo

Whitepunk [10]

Answer:

1.2 feet long

Step-by-step explanation:

(1/50) * 60 = 1.2

6 0

3 years ago

A researcher surveyed 220 residents of a city about the number of hours they

olga55 [171]

Answer:

Margin of error of 0.0485 hours.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this question:

$\sigma = 0.35, n = 220$

The margin of error is of:

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.96\frac{0.35}{\sqrt{200}}$

$M = 0.0485$

Margin of error of 0.0485 hours.

5 0

2 years ago

Bailey will roll a number cube and flip a coin for a probability experiment. The faces of the number cube are labeled 1 through

Tresset [83]

Heads it’s lucky i think but yeetr

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2 years ago

A communications company is planning to launch a new satellite into orbit to improve the operation of its network. The longest d

sergiy2304 [10]

As far as I can tell, is just asking for the type, so that'd be a tangential line to the globe, or a tangent line, see picture below

3 0

3 years ago

Nada drinks 54 glasses of water a week. How many glasses of water does she drink in 9 Weeks?

kodGreya [7K]

Answer: 486 glasses of water in 9 weeks

Step-by-step explanation:

54 X 9 = 486

Or you could add 54 to itself 9 times then you will get 486

4 0

2 years ago