There are 28 students in the math class, and 22 of the students passed recently. What percentage did the test pass?

Does anyone know the answer to the last question? :)

PIT_PIT [208]

Answer:

y=1.5 that what i got okay

6 0

2 years ago

A square coffee table has an area of 196 square inches.what is the perimeter

andrew11 [14]

Answer:

56 in

Step-by-step explanation:

Square ....so each side is = x

x * x = area = 196

x^2 = 196

x = sqrt (196) = 14 in

perimeter = x + x + x + x = 56 in

7 0

2 years ago

Read 2 more answers

A researcher is interested in the lengths of brook trout, which are known to be approximately Normally distributed with mean 80

aliya0001 [1]

Answer:

$P(X$

And we can find this probability with the normal standard distirbution or excel and we got:

$P(z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the lenghts of a population, and for this case we know the distribution for X is given by:

$X \sim N(80,5)$

Where $\mu=80$ and $\sigma=5$

We are interested on this probability

$P(X$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

If we apply this formula to our probability we got this:

$P(X$

And we can find this probability with the normal standard distirbution or excel and we got:

$P(z$

6 0

2 years ago

A number divided by 5 is 22 find the number

Naddika [18.5K]

110 just multiply 5 by 22

4 0

3 years ago

Read 2 more answers

You are starting a new business in which you have decided to sell two products instead of just one. Determine a business you cou

svp [43]

If I had to choose a business to start off with I would start a lemonade stand With cookies

First let's do the lemonade Side Let's say I put $100 into the business And it cost a dollar per lemon $5 for 10 lb of sugar It takes about five lemons about and a pound of sugar to make one batch that makes about 20 cups of Lemonade Each cup of lemonade for cost me roughly $0.50 I would then sell Each cup of lemonade for $0.75 and make a 5 profit Now let's talk about the cookie portion of the business You have to get milk flour sugar and salt Together that cost maybe $10 per batch Of 50 cookies Which cost roughly $0.20 to Make You can sell them at with a profit of $0.05 for $0.25 After $25 Prophet.So overall you will make roughly $30

5 0

3 years ago

There are 28 students in the math class, and 22 of the students passed recently. What percentage did the test pass?​

There are 28 students in the math class, and 22 of the students passed recently. What percentage did the test pass?