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3 years ago

What is the slope of this line?

Mathematics

2 answers:

FrozenT [24]3 years ago

8 0

Pick 2 points. (-3,0). And ( 0,-3)

Slope y-y/x-x

0-(-3) / (-3-0)

3/ -3.

-1= slope

Sloan [31]3 years ago

4 0

The slope of the line is -1

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How are a debit and credit represented on a number line?

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Step-by-step explanation:

A credit is represented as a positive number that is located to the left of zero.

C) A credit is represented as a negative number that is located to the left of zero. A debit is represented as a positive number that is located to the left of zero.

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4 years ago

Can anyone help me ?

labwork [276]

Answer:

A. (-4,-5)

B. (-6,-3)

C. (-10, -6)

D. (-5, -10)

Step-by-step explanation:

The Y axis is the vertical one, so you would just reflect it over that.

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3 years ago

X = 0 Solve. 2.1x - (1 + 2x) = 5.3

HACTEHA [7]

Answer:

-1=5.3

not sure if this is right; it should be though

Step-by-step explanation:

2.1(0) - (1+2(0))= 5.3

-(1)=5.3

-1=5.3

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3 years ago

(30 points)Red Rocks Parks is an open air amphitheater carved out of rock, near Denver Colorado. The amphitheater has 69 rows of

Kobotan [32]

Answer:

En la última fila de la zona general hay 98 asientos y en la zona preferencial hay 564 asientos.

Explicación paso a paso:

= 1 + − 1 ×

40 = 20 + 40 − 1 × 2

40 = 20 + 39 × 2

40 = 20 + 78

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= (1 + ) 2 ×

12= (36 + 58) 2 ×12

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Step-by-step explanation:

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3 years ago

A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of

disa [49]

Answer:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

Step-by-step explanation:

For this case we assume the following probability distribution:

X 5 6 7 8 9 10

P(X) 0.05 0.15 0.33 0.28 0.12 0.07

First we need to find the expected value (first moment) and the second moment in order to find the variance and then the standard deviation.

In order to calculate the expected value we can use the following formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

In order to find the standard deviation we need to find first the second moment, given by :

$E(X^2)=\sum_{i=1}^n X^2_i P(X_i)$

And using the formula we got:

$E(X^2)=(5^2 *0.05)+(6^2 *0.15)+(7^2 *0.33)+(8^2 *0.28)+ (9^2 *0.12 +(10^2 *0.07))=57.46$

Then we can find the variance with the following formula:

$Var(X)=E(X^2)-[E(X)]^2 =57.46-(7.48)^2 =1.5096$

And then the standard deviation would be given by:

$Sd(X)=\sqrt{Var(X)}=\sqrt{1.5096}=1.229$

5 0

4 years ago

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