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3 years ago

How many unit squares are shaded in a 12 by 12 border grid

Mathematics

2 answers:

Oduvanchick [21]3 years ago

8 0

So you just have to multiply 12 times 12 which is 144

torisob [31]3 years ago

3 0

12 ×12 =144 squares. an array is found by multiplying length units by width units. Much like finding the area

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Height, in meters, is measured for each person in a sample. After the data are collected, all the height measurements

charle [14.2K]

Answer:

(E) The z-scores of the height measurements

Step-by-step explanation:

Mean is given by

$\bar {x}=\frac{1}{n}\left(\sum _{i=1}^{n}{x_{i}}\right)=\frac{x_{1}+x_{2}+\cdots +x_{n}}{n}$

Where,

n = Number of people

$x_{i}$ = The heights of people

When converting m to cm the mean would be

$\bar {x}=\frac{1}{n}\left(\sum _{i=1}^{n}{x_{i}}\right)\times 100$

So, the mean would change

The median gives us the middle data value when the data values are in ascending order.

So, the median would change

Standard deviation

$s=\sqrt{\frac{1}{N-1}\sum_{i=1}^{N}(x_i-\bar{x})^2}$

When converting to centimeters

$s=\sqrt{\frac{1}{N-1}\sum_{i=1}^{N}\left((x_i-\bar{x})\times 100\right)^2$

Hence, the standard deviation would change

When converting to centimeters the maximum height in meters would be the maximum height in centimeters also.

The z score is given by

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

where,

x = Data point

$\mu$ = Mean

$\sigma$ = Standard deviation

When converting to centimeters

$z=\frac{(x-\mu)\times 100}{\sigma\times 100}\\\Rightarrow z=\frac{x-\mu}{\sigma}$

Hence, the z score would remain the same

5 0

3 years ago

Gib Answer:

Marina86 [1]

Answer:

the probability is 1/4

4 0

2 years ago

Is 6.31 repeating rational or irrational

leonid [27]

6.31 is a rational number.

4 0

2 years ago

Five players on a basketball team in a game 4 players score 6 Points each the team scored a total of 34 points how many points d

Dmitrij [34]

Answer: The other player scored 10 points.

Step-by-step explanation:

Since we have given that

Number of players = 4

Number of scores each player score = 6

Total scores scored by 4 players would be

$4\times 6\\\\=24$

Total scores scored by a team = 34 points

So, the number of points scored by other player score is given by

$34-24=10\ points$

Hence, the other player scored 10 points.

7 0

3 years ago

Factor & Finding Zeros<br> x^{2} -x-6=0

Mamont248 [21]

Answer:

x = 3, -2

Step-by-step explanation:

To help us factor, we can split the middle term up into the sum of the terms -3x and 2x:

$x^2+(-3x)+2x-6=0$

From there, we can factor out an x from the first two term and a 2 from the last two to obtain the equation

$x(x-3)+2(x-3)=0$

Factoring out an (x - 3) from each term gives us the equation

$(x-3)(x+2)=0$

At this point, we can divide by either x - 3 or x + 2 to obtain the two equations

$x-3=0$ and $x+2=0$

Solving both for x gives us the solutions x = 3 and x = -2. We can verify these by substituting them back into the original equation:

$3^2-3-6=0\\9-3-6=0\\6-6=0\\0=0$

$(-2)^2-(-2)-6 = 0\\4+2-6=0\\6-6=0\\0=0$

3 0

3 years ago