13.065 -0.07 ________

A watercolor painting is 20 inches long by 9 inches wide. Raymond makes a border around the watercolor painting by making a mat

sergey [27]

The mat adds 3 inches to each side, so the length would be 3+20 = 23 inches. The width would become 3 + 9 = 12 inches.Area = Length x width:

23 x 12 = 276 square inches

4 0

4 years ago

A distance AB is observed repeatedly using the same equipment and procedures, and the results, in meters, are listed below: 67.4

skad [1K]

Answer:

a) $\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

b) The sample deviation is calculated from the following formula:

$s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

$\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And then the deviation would be:

$\sigma =0.00319$

Step-by-step explanation:

For this case we have the following dataset:

67.401, 67.400, 67.402, 67.396, 67.406, 67.401, 67.396, 67.401, 67.405, and 67.404

Part a: Determine the most probable value.

For this case the most probably value would be the sample mean given by this formula:

$\bar X =\frac{\sum_{i=1}^n X_i}{n}$

And if we replace we got:

$\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

Part b: Determine the standard deviation

The sample deviation is calculated from the following formula:

$s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

$\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And then the deviation would be:

$\sigma =0.00319$

3 0

4 years ago

Some four-digit numbers, such as 3003 and 6226, read the same forward and backward. If a boy selects a number from all four-

Norma-Jean [14]

Answer:

The probability of selecting such number = $\frac{90}{9000} = \frac{1}{100}$

Explanation:

4-digit numbers start from 1000 and ends at 9999

So, there are 9000 4-digit numbers present

There are 90 palindrome numbers (which reads the same forward and backward) present between 1000-9999. They are 1001; 1111; 1221; 1331; ... 1001; 1111; 1221; 1331; ... to 9669; 9779; 9889; 9999; 9669; 9779; 9889; 9999

Therefore, the probability of selecting such number = $\frac{90}{9000} = \frac{1}{100}$

3 0

3 years ago

How do you solve 5(3+k)=45

Helen [10]

We simplify the equation to the form, which is simple to understand
5(3+k)=45

Reorder the terms in parentheses
+(+15+5k)=45

Remove unnecessary parentheses
+15+5k=+45

We move all terms containing k to the left and all other terms to the right.
+5k=+45-15

We simplify left and right side of the equation.
+5k=+30

We divide both sides of the equation by 5 to get k.
k=6

7 0

3 years ago

Read 2 more answers

HELPPP Write the equation of the graphed function. Give your answer in standard form.

Lesechka [4]

Answer:

This has to be given by your values...in simple words the graph is an hyperbola and is given in the form F(x)=ax (to the power 2) -6

Step-by-step explanation:

THE REASON AS TO WHY -6 IS IN THE EQUATION IS BECAUSE ITS A Y INTERCEPT AND BASED ON MATH ANY NEMERICAL VARIABLE IN A FUNCTION IS THE Y-INT

THE "A" AND "X" VALUES YOU YOURSELF HAVE TO DETEREMINE,BASED ON HOW YOUR GRAPH IS.

***DISCLAIMER***:IM NOT RESPONSIBLE IF THIS ANSWER IS WRONG...ITS JUST MY THOUGHT TO HELP IN MY BEST POSSIBLE WAY

THANKS

HOPE THIS ASSISTS

7 0

3 years ago

Read 2 more answers

13.065 -0.07 _________