ales volume last weekend for four samples, each consisting of five car dealerships, were as follows: Data Point 1 2 3 4 5 Sample 1 37 15 43 25 21 Sample 2 38 31 12 19 28 Sample 3 16 21 45 32 25 Sample 4 19 10 45 37 22 What is the standard deviation of the distribution of sample means

Answer:

y = -3x - 3.

Step-by-step explanation:

Find the slope of the line JK:

Slope = (6-4)/(3- (-3))

= 2 / 6

= 1/3.

Therefore the slope of the line perpendicular to it is - 1 / 1/3

= -3.

Now we use the point-slope form of a line to get the required equation:

y - y1 = m(x - x1)

Here m = -3 and (x1, y1) = (3, -12) so we have

y - (-12) = -3(x - 3)

y + 12 = -3x + 9

y = -3x + 9 - 12

y = -3x - 3 is the answer.

Answer:

x + 2y - 3 = 0

Step-by-step explanation:

Coordinates of the points P and Q are (-3, 0) and (0, 6) respectively.

Slope of PQ = (0- 6)/(-3 - 0) = - 6/-3 = 2

Slope of line perpendicular to PQ = - 1/2

Since, required line passes through point R(7, - 2) and is perpendicular to PQ.

Therefore, equation of line in point slope form is given as:

[tex]y - (-2) = - \frac{1}{2} (x - 7) \\ \\ y + 2 = - \frac{1}{2} (x - 7) \\ \\2(y + 2) = - (x - 7) \\ \\ 2y + 4 = - x + 7 \\ \\ 2y + 4 + x - 7 = 0 \\ \\ x + 2y - 3 = 0[/tex]

Therefore x + 2y - 3 = 0 is the required equation of line.

Answer:

Answer:

x + 2y - 3 = 0

Step-by-step explanation:

Coordinates of the points P and Q are (-3, 0) and (0, 6) respectively.

Slope of PQ = (0- 6)/(-3 - 0) = - 6/-3 = 2

Slope of line perpendicular to PQ = - 1/2

Since, required line passes through point R(7, - 2) and is perpendicular to PQ.

Therefore, equation of line in point slope form is given as:

\begin{gathered}y - (-2) = - \frac{1}{2} (x - 7) \\ \\ y + 2 = - \frac{1}{2} (x - 7) \\ \\2(y + 2) = - (x - 7) \\ \\ 2y + 4 = - x + 7 \\ \\ 2y + 4 + x - 7 = 0 \\ \\ x + 2y - 3 = 0\end{gathered}

y−(−2)=−

2

1

(x−7)

y+2=−

2

1

(x−7)

2(y+2)=−(x−7)

2y+4=−x+7

2y+4+x−7=0

x+2y−3=0

Therefore x + 2y - 3 = 0 is the required equation of line.

hope it helps you

Answer:

idek

Step-by-step explanation:

Answer:

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

Step-by-step explanation:

Se sabe que la suma de tres números es 850. El primero es un tercio del segundo y el tercer número es el doble del segundo.

Representamos:

Primer número = x

Segundo número = y

Tercer número = z

Se sabe que la suma de tres números es 850.

x + y + z = 850 ...... Ecuación 1

El primero es un tercio del segundo

x = 1/3 años

El tercer número es el doble del segundo.

z = 2 años

Sustituimos 1 / 3y por x y 2y por z en la Ecuación 1

1 / 3y + y + 2y = 850

y / 3 + 3y = 850

Multiplica ambos lados por 3

y + 9y = 850 × 3

10 años = 2550

y = 2550/10

y = 255

Resolviendo para x

x = 1/3 años

x = 1/3 × 255

x = 85

z = 2 años

z = 2 × 255

z = 510

Por eso,

Primer número = x = 85

Segundo número = y = 255

Tercer número = z = 510

Answer:

When multiplying negative numbers, just remember 2 things. 1: 2 negative values will always give a positive value. 2: If you only have 1 negative value, your answer will also be negative. Just remember these rules and the rest is simple multiplication.

Answer:

Hi there! Your answer is down below!

Step-by-step explanation:

The rule of how to multiply negatives is simple: For a case where a negative number is multiplied by a positive, the rule above can be restated as: take the positive number, and the negative WITHOUT the minus sign, multiply them and add the inus sign to the product.

Have a nice day!

Answer:

breakdown the initial figure into 2 rectangle

and add their area

Answer:

dddddddddddddv

Step-by-step explanation:

Answer: illegel input- too many equals signs

Step-by-step explanation:

Answer:

the answer is 8

Step-by-step explanation:

5 times  8 =45 5 time table

Answer:

9

Step-by-step explanation:

8x9=45

Answer:

x = 2

y = 3

Step-by-step explanation:

Measures of opposite sides of a parallelogram are equal.

Therefore,

PQ = SR

2y + 2 = y + 5

2y - y = 5 - 2

y = 3

QR = PS

2x + 3 = y + 4

2x + 3 = 3 + 4 (y = 3)

2x = 7 - 3

2x = 4

x = 4/2

x = 2

Thus, for x = 2 and y = 3, PQRS is a parallelogram.

Answer:

4 grams

Step-by-step explanation:

Find how many grams of sugar are in each mixture:

10(0.15)

= 1.5

25(0.1)

= 2.5

Add these together:

1.5 + 2.5 = 4

So, the mixture contains 4 grams of sugar

Answer:

In general, for a trinomial of the form x2+bx+c x 2 + b x + c you can factor a trinomial with leading coefficient 1 by finding two numbers, p and q whose product is c, and whose sum is b.

Where is the triangle?

Answer:

49 cm²

Step-by-step explanation:

Step-by-step explanation:

if the 2 shorter sides add up to less than the larger side, then it's not a triangle.

Answer:

She did better on the Math test.

Step-by-step explanation:

14/17 is 82 percent, and 31/19 is only about 80%.

Answer:

7.080

Step-by-step explanation:

The rounding off to the number nearest hundredth will be 7.048.

When a number is rounded off, its value is maintained but is brought closer to the next number, simplifying the number. For entire numbers as well as decimals at different places of hundreds, tens, tenths, etc., it is done.

A number can be rounded off to its lower value if the number after the decimal is between 0 and 4. The number will be rounded off to its higher value if the number after it is between 5 and 9.

The given number will be rounded off as below:-

7.0483 = 7.048

Therefore, the rounding off to the number nearest hundredth will be 7.048.

To know more about rounding off numbers follow

brainly.com/question/10340128

#SPJ2

Answer:

12 and 21

Step-by-step explanation:

Answer:

A = 1/5

B = 2/15

brainlist plz byubnbhy

Step-by-step explanation:

Answer:

A = 1/5

B = 2/15

Step-by-step explanation:

Answer:

4/3

Step-by-step explanation:

The larger accute angle in a 3 4 5 right triangle will always be the angle in between 3 and 5. Tangent theta = opposite side ÷ adjacent side, so 4/3.

The tangent should be in fraction is [tex]4\div 3[/tex]

Since in a right triangle with side lengths 3, 4, and 5

Here there is the larger acute angle in the 3, 4 and 5 so it should be lies between 3 and 5

So, it should be like

= opposite side ÷ adjacent side

= [tex]4\div 3[/tex]

Hence, The tangent should be in fraction is [tex]4\div 3[/tex]

Learn more about fraction here: https://brainly.com/question/19107557

Answer:

x(3+9)=72

or, x(12)=72

or, x=72÷12

or, x = 6 ans.

Answer: x=6

Step-by-step explanation:

Let's solve your equation step-by-step.

x(3+9)=72

Step 1: Simplify both sides of the equation.

12x=72

Step 2: Divide both sides by 12.

12x/12=72/12

x=6

Answer:

x=6

Answer:

x = -2

Step-by-step explanation:

-3(x + 2) = 4 + 2x

= -3x + -6 = 4 + 2x  (Distribution: -3)

= -3x + -2x - 6 = 4  (Moving the variables to the left and change the signs)

=  -3x + -2x = 4 + 6 (Move consatnts to the right and change signs)

= -3x - 2x = + 6  --> (Collect like terms)

= -5x = 10 (Then add)

= (divide -5x = 10 by -5)

= x = 2

Answer:

si mamacita

Step-by-step explanation:

El álgebra es un tipo de matemática. Se trata de ecuaciones y resolución de incógnitas. El álgebra se usa para calcular números basados ​​en una ecuación. ¡Espero que esto ayude!

Answer:

log h 9 + log h j +log h k

Step-by-step explanation:

i got it right on edg

Answer:

it is B for all u speed run edge people

Step-by-step explanation:

big luck in life

Answer:

Step-by-step explanation:

w=204.8

Answer:

204.8

Step-by-step explanation:

8x25.6=204.8

DOuble Check:

204.8 divided by 25.6=8

Hope it helps and is correct!

Answer:

It took her approximately 6.1 hours to run both races.

Step-by-step explanation:

3.15 plus 2.9 equals 6.05, rounded to the tenths place is 6.1.