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3 years ago

What is the slope (2,-9) (-2,3)

Mathematics

2 answers:

liberstina [14]3 years ago

8 0

Answer:

-3

Step-by-step explanation:

-12/4=-3

I got -12 but subtracting two y values, and got 4 by subtracting two x values.

Formula to find slope is= change of y/ change of x=

-12/4= 3

Schach [20]3 years ago

4 0

Answer:

$\displaystyle m=-3$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (2, -9)

Point (-2, 3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]: $\displaystyle m=\frac{3+9}{-2-2}$
[Frac] Add/Subtract: $\displaystyle m=\frac{12}{-4}$
[Frac] Divide: $\displaystyle m=-3$

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2 years ago

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3 years ago

A cylinder has a radius of 6 inches and a height of 15 inches. What is the surface area of the cylinder? Express the answer in t

shutvik [7]

Answer:

The surface area for this cylinder is 252*pi square inches.

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The surface area of a cylinder can be calculated by using the following formula:

surface area = 2*pi*r² + 2*pi*r*h

Applying the data from the problem, we have:

surface area = 2*pi*(6)² + 2*pi*(6)*15

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Suppose small aircraft arrive at a certain airport according to a Poisson process with rate a 5 8 per hour, so that the number o

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Answer:

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Step-by-step explanation:

Let the random variable X = number of aircraft arrive at a certain airport during 1-hour period.

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(a)

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(b)

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The expected value of the number of small aircraft that arrive during a 90-min period is 12.

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$SD=\sqrt{\lambda t}=\sqrt{12}=3.464$

The standard deviation of the number of small aircraft that arrive during a 90-min period is 3.464.

(c)

For t = 2.5 the value of λ, the average number of aircraft arrival is:

$\lambda t=8\times 2.5=20$

Compute the value of P (X ≥ 20) as follows:

$P(X\geq 20)=1-P(X$

Thus, the probability that at least 20 small aircraft arrive during a 2.5-hour period is 0.5298.

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Thus, the probability that at most 10 small aircraft arrive during a 2.5-hour period is 0.0108.

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