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3 years ago

What does x mean in math

Mathematics

2 answers:

kumpel [21]3 years ago

6 0

It’s like the answer you have to figure out ? Lol idk

Sunny_sXe [5.5K]3 years ago

6 0

the variable for the unknown number

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Positive 11 minus negative 9

krek1111 [17]

11-9= 2 its just simple math

5 0

3 years ago

Read 2 more answers

Find the length of the segment with endpoint Y(4, 3) and midpoint M(1, 7).

inessss [21]

Answer:the length is 10

Step-by-step explanation:

since m is the midpoint it is 3 away from y on the x axis and 4 away on the y axis

so if you go the same distance away from the midpoint you get -2, 11

so -2 is 6 away from 4 away and 3 is 8 away from 11

6^2 = 36

8^2 = 64

36+64= 100

the square root of 100 is 10

5 0

4 years ago

AARP reported on a study conducted to learn how long it takes individuals to prepare their federal income tax return (AARP Bulle

Crank

Answer:

Confidence interval: (30.1,36.9)

Step-by-step explanation:

We are given the following data set:

35.3,30.5,37.4,26.5,13.0,49.9,28.8,44.0,61.6,0.5,40.5,34.9,47.9,36.6,24.1,39.8,47.8,18.5,36.6,39.2,14.5,37.3,40.5,49.3,45.5,28.3,19.5,5.6,52.6,41.4,45.3,39.0,33.7,29.4,14.5,40.1,33.7,36.9,5.6,33.7

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1339.9}{40} = 33.5$

$S.D = 11$ (given)

n = 40

Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$33.5 \pm 1.96(\frac{11}{\sqrt{40}} ) = 6.34 \pm 3.4 = (30.1,36.9)$

6 0

3 years ago

(3.45 x 103) + (1.23 x 103)

mr Goodwill [35]

Answer:

482

Step-by-step explanation:

!!!!!!!!!!!!!!!!!

6 0

3 years ago

Fredo pays 79.65 for twenty-seven 17 count boxes of granola bars. How much does 1 box of granola bars cost?

alexira [117]

It is going to be 2.95 because 79.65 divided by 27 equals 2.95

have a good day mate!

7 0

3 years ago