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4 years ago

15

val has 2 hours to finish a slide presentation. it takes her 1/6 hours to create each slide. will val have enough time to create

10 slides? explain your reasoning

1 answer:

tia_tia [17]4 years ago

3 0

Ufididififiididid and fjfjdjdkdkdkidod and yeah

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What is a real life example of a parabola

den301095 [7]

Answer:

A banana could be one

Step-by-step explanation:

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3 years ago

What type of number can be written as an a fraction a/b where a and b are Integres and b is not equal to zero?

faltersainse [42]

Answer:

Integers, Terminating Decimals, Recurring Decimals, Proper and Improper Fractions.

Step-by-step explanation:

The following subset of the real number system can be written in the form $\dfrac{a}{b}$ , b≠0.

Integers(ℤ): These are positive and negative whole numbers. For example, 5 can be written as $\dfrac{5}{1}$

Terminating Decimals: These are fractions that when converted to decimal numbers have an end.

e.g. $\dfrac{5}{2}=2.5$

Recurring Decimals: These are fractions that when converted to decimal numbers do not have an end.

e.g. $\dfrac{8}{11}=0.727272...=0.\overline{72}$

Proper Fractions: These are fractions of the form $\dfrac{a}{b}$ where a<b. An examples is $\dfrac{4}{5}$

Improper Fractions: These are fractions of the form $\dfrac{a}{b}$ where a>b. An examples is $\dfrac{5}{4}$

6 0

3 years ago

in class of 80 student debre berhan university ,45 are good in mathematics,15 are good in both mathematics and in english,13 are

-BARSIC- [3]

We want to find the number of students that are not good in any of the courses.

There are 80 students.

45 are good in mathematics

15 are good in both, mathematics and in English

13 are good in both, mathematics and psychology

16 are good in both English and psychology

20 are good in psychology

9 are good in all of the courses.

First, we know that we have:

45 good in math + 20 good in psychology = 65 students good in something.

But we know that:

13 are good in both, mathematics and psychology

This means that there are 13 students that are being counted twice, so we need to subtract 13.

45 + 20 - 13 = 52 students good in something.

Now we know that:

15 are good in both, mathematics and in English

16 are good in both English and psychology

9 are good in all of the courses.

So one would want to also count these students, but notice that these are already good in mathematics or in psychology, so these are already counted.

And we can't see the number of students that are only good with English, so we can conclude that

52 students are good in something.

then 28 students are not good at any of the 3 courses.

If you want to learn more, you can read:

brainly.com/question/24350406

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3 years ago

Help meh plzzzzzzzzzzzz

Mnenie [13.5K]

Answer:

50

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

7.1.35-T Question Help You are the operations manager for an airline and you are considering a higher fare level for passengers

shusha [124]

Answer:

You must survey 784 air passengers.

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 zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

95% confidence level

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

Assume that nothing is known about the percentage of passengers who prefer aisle seats.

This means that $\pi = 0.5$ , which is when the largest sample size will be needed.

Within 3.5 percentage points of the true population percentage.

We have to find n for which M = 0.035. So

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

$0.035 = 1.96\sqrt{\frac{0.5*0.5}{n}}$

$0.035\sqrt{n} = 1.96*0.5$

$\sqrt{n} = \frac{1.96*0.5}{0.035}$

$(\sqrt{n})^2 = (\frac{1.96*0.5}{0.035})^2$

$n = 784$

You must survey 784 air passengers.

6 0

3 years ago