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3 years ago

Help help help math math

Mathematics

2 answers:

Lemur [1.5K]3 years ago

8 0

Answer:

2 x 3 x 5

Step-by-step explanation:

that is it

Grace [21]3 years ago

8 0

Answer: 2 x 2 x 17

Step-by-step explanation:

The three prime numbers in the prime factorization of 68 are 2, 2, & 17. Therefore, the prime factorization of 68 is 2 x 2 x 17.

I hope this helps!

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The price of a television was reduced from $250 to $200. By what percentage was the price of the television reduced?

gavmur [86]

Answer: C

Step-by-step explanation:Well the change in price was 50 dollars

Now divide your change in price by the original price

50/250=.2

To get that into a percentage multiply it by 100 and you get 20%

The answer is C

6 0

3 years ago

Read 2 more answers

Solve for x. 5+(x-2)=-8

Arte-miy333 [17]

Answer:

x = -11

Step-by-step explanation:

First, get rid of parentheses:

5 + x - 2 = -8

Then, simplify:

3 + x = -8

Finally, subtract 3 on both sides:

x = -11

Hope this helps ^^

7 0

3 years ago

Read 2 more answers

According to a random sample taken at 12 A.M., body temperatures of healthy adults have a bell-shaped distribution with a mean o

Katarina [22]

Chebyshev’s Theorem establishes that at least 1 - 1/k² of the population lie among k standard deviations from the mean.

This means that for k = 2, 1 - 1/4 = 0.75. In other words, 75% of the total population would be the percentage of healthy adults with body temperatures that are within 2standard deviations of the mean.

The maximum value of that range would be simply μ + 2s, where μ is the mean and s the standard deviation. In the same way, the minimum value would be μ - 2s:

maximum = μ + 2s = 98.16˚F + 2*0.56˚F = 99.28˚F

minimum = μ - 2s = 98.16˚F - 2*0.56˚F = 97.04˚F

In summary, at least 75% of the amount of healthy adults have a body temperature within 2 standard deviations of 98.16˚F, that is to say, a body temperature between 97.04˚F and 99.28˚F.

5 0

3 years ago

The sum of a number and twenty-one is sixty-four. what is the value of the number?

Alchen [17]

The values of the number is 43

x+21=64

subtract 21 on each side

x = 43

5 0

3 years ago

Read 2 more answers

The box-and-whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grad

Leya [2.2K]

<h3><u>Answer with explanation:</u></h3>

From the box and whisker plot of seventh grade we have:

The minimum value =6

First quartile or lower quartile i.e. $Q_1$ = 14

Median or second quartile i.e. $Q_2$ = 18

Third quartile or upper quartile i.e. $Q_3$ =22

and maximum value = 26

From the box and whisker plot of eighth grade we have:

The minimum value =22

First quartile or lower quartile i.e. $Q_1$ = 26

Median or second quartile i.e. $Q_2$ = 30

Third quartile or upper quartile i.e. $Q_3$ = 34

and maximum value = 38

The overlap of the two sets of data is as follows.

The upper quartile or third quartile of seventh grade is same as the minimum value of the data of eighth grade.
And the maximum value of seventh grade is same as the lower quartile of eighth grade.

IQR is calculated as the difference of the Upper quartile and the lower quartile

i.e. $Q_3-Q_1$

so, IQR of seventh grade is:

22-14=8

IQR of seventh grade=8

IQR of eighth grade is:

34-26=8

Hence, IQR of eighth grade=8

The difference of the median of the two data sets is:

30-18=12

Hence, the difference of median is: 12

As the IQR of both the sets is same i.e. 8.

Hence, the number that must be multiplied by IQR so that it is equal to the difference between the medians of the two sets is:

$8\times n=12\\\\n=\dfrac{12}{8}\\\\n=\dfrac{3}{2}\\\\n=1.5$

Hence, the number is : 1.5

6 0

3 years ago