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3 years ago

Select all the distribution shapes for which it is most often appropriate to use the mean.

Mathematics

1 answer:

Alona [7]3 years ago

6 0

Answer:

Skewed

Step-by-step explanation:

Looking at the options;

- Bimodal has to do with 2 modes in a symmetrical Distribution. Thus is doesn't apply to the mean.

-bell shaped deals with the graphical depiction of a normal probability distribution, whereby the underlying standard deviations from the mean will create the curved bell shape. So it is not used for mean.

- symmetric deals mirror images of the distribution when a vertical line is drawn down the middle of the distribution.

-skewed shape tells us whether the mean is pulled to the tail and if it is more than or less than the median.

- uniform shape means same frequency for each class.

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bryan has some 3 cent stamps and some 4 cent stamps. what is the least number of stamps he can combine so the value of the stamp

SashulF [63]

Answer:

The least number of stamps required is $9$

Step-by-step explanation:

Let the number of $3$ cent stamps be $x$ and $4$ cent stamps be $y$

We have

$3x+4y=33$

The minimum number is obtained when more $4$ cent stamps are used

Here $y$ cannot be greater than $8$ since $\frac{33}{4}$

Substitute $y=8$

$3x+4\times 8=33\\\\3x=1\\\\x=\frac{1}{3}$

Not possible since $x$ is not a fraction

Substitute $y=7$

$3x+4\times 7=33\\\\3x=5\\\\x=\frac{5}{3}$

Not possible since $x$ is not a fraction

Substitute $y=6$

$3x+4\times 6=33\\\\3x=9\\\\x=\frac{9}{3}\\\\=3$

Possible

Hence minimum number of stamps is

$=x+y\\\\=3+6\\\\=9$

5 0

2 years ago

What is y=x+2and 2x+y=8

Leya [2.2K]

Answer:

1. x=y−2

2. -1/2y + 4

Step-by-step explanation:

5 0

3 years ago

Find x and y<br><br> helppppp !!

Anni [7]

3x + 6 = 48 (alternate angles are equal)

- 6

3x. = 42

÷3

x = 14 degrees

180-48 - 2y + 5y-9 =180

123 + 3y = 180

-123

3y = 57

÷3

y = 19 degrees

Explanation:

To find the last angle on the top straight line, do:

180 - (the 2 given angles).

So, 180 - (3x + 16, which is 48 due to alternate angles being equal). Then, minus the 2y.

(180 - 48 - 2y) & simplify => 132 - 2y

This gives you the equation for the missing angle on our top straight line.

Thus, co-interior angles add to 180. So, we add the new equation (132 - 2y) to 5y - 9.

Simplify

=> 123 + 3y (because - 2+5 =3)

and put it equal to 180. Solve for y

Hope this helps!

7 0

1 year ago

What is the most important physical feature in Afri ca?

k0ka [10]

The plateau I believed

6 0

3 years ago

What is the answer to the equation X=3-(3x6)+2?

dolphi86 [110]

x = 3 - (3×6) + 2. We perform the operation in the bracket first.

x = 3 - 18 + 2

x = -15 + 2 = 2 -15 = -13

x = -13

4 0

3 years ago