2/5 of a number is what percentage of that number? ___

10% of £22 5% of £22 15% of £22 —————- please help!

dybincka [34]

Step-by-step explanation:

10% of £22

10/100×22/1

2.2%

5% of £22

5/100×22/1

1.1%

15% of 22£

15/100×22/1

3.3%

5 0

3 years ago

A boat with some water at its bottom was found leaking again. Assume that water goes into the boat at a constant rate. 3 hours a

ratelena [41]

The Number of people is 12 when time taken is 2 hours.

According to the statement

Time taken when 10 people works is 3 hours

Time taken when 5 people works is 8 hours

Then we have to find the number of peoples when time taken is 2 hours.

So, average time that for which single person works is 180 min/ 10 = 18 min.

It means the average time for single person works is 18 min in case of 10 people.

and one thing is clear that the number of people is greater than 10 people when time taken is 2 hours.

So, The Number of people is 12 when time taken is 2 hours.

Learn more about AVERAGE here brainly.com/question/8728504

#SPJ4

6 0

2 years ago

The physical plant at the main campus of a large state university receives daily requests to replace fluorescent lightbulbs. The

Nikolay [14]

Answer:

$P(62< X< 72)= P(X$

Step-by-step explanation:

The empirical rule, also known as three-sigma rule or 68-95-99.7 rule, "is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ)".

Let X the random variable who represent the courtship time (minutes).

From the problem we have the mean and the standard deviation for the random variable X. $E(X)=62, Sd(X)=5$

So we can assume $\mu=62 , \sigma=5$

On this case in order to check if the random variable X follows a normal distribution we can use the empirical rule that states the following:

• The probability of obtain values within one deviation from the mean is 0.68

• The probability of obtain values within two deviation's from the mean is 0.95

• The probability of obtain values within three deviation's from the mean is 0.997

So we need values such that

$P(X$

$P(X>\mu +\sigma)=P(X >67)=0.16$

$P(X$

$P(X>\mu +2*\sigma)=P(X>72)=0.025$

$P(X$

$P(X>\mu +3*\sigma)=P(X>77)=0.0015$

For this case we want to find this probability:

$P(62 < X< 72)$

And we can find this probability on this way:

$P(62< X< 72)= P(X$

Since $P(X>72) =0.025$ by the complement rule we have that:

$P(X$

And $P(X$ because for this case 62 is the mean.

So then we have this:

$P(62< X< 72)= P(X$

7 0

3 years ago

Will give brainliest answer

geniusboy [140]

Answer:

true

false

Step-by-step explanation:

the triangle is equal throughout but not symmetrical.

5 0

4 years ago

"By 1960, 36 percent of all women sixteen and older— 23 million women— worked for paid wages. But there were nursery schools for

Elanso [62]

Answer:

Because it shows that at that time most people thought that women were not supposed to work.

Step-by-step explanation:

At the time, many women had started to work to be able to provide for their families, but there was still the believe that they were supposed to be to home doing chores and taking care of the kids and because of that, there were not enough nursery schools for their kids.

4 0

3 years ago

2/5 of a number is what percentage of that number? ____%