All categories

2 years ago

When graphing the inequality. 2 - 8> -20 is it open or closed dot, and is it shaded to the left or the right?

Mathematics

1 answer:

Goryan [66]2 years ago

7 0

Answer:

I assume you know the 4 inequalites:

The 4 Inequalities

Symbol Words Example

> greater than x+3 > 2

< less than 7x < 28

≥ greater than or equal to 5 ≥ x−1

≤ less than or equal to 2y+1 ≤ 7

The "open circle" represents less than or greater than, and the "closed circle" represents greater than or equal to or less than or equal to.

Hope it helps! Have a great day! :) let me know if it helped

You might be interested in

B. f(x) = -1x - 4; Find f(-3)

Margaret [11]

Answer:

f(-3) = -1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Functions
Function Notation

Step-by-step explanation:

Step 1: Define

Identify

f(x) = -1x - 4

Step 2: Evaluate

Substitute in x [Function f(x)]: f(-3) = -1(-3) - 4
Multiply: f(-3) = 3 - 4
Subtract: f(-3) = -1

4 0

2 years ago

Destiny paid $6.60 for a dozen cupcakes for a birthday patry. What is the unit cost for each cupcake?

Digiron [165]

Answer: $.55

Step-by-step explanation:

An important thing to know is that a dozen is equal to 12.

12x= 6.60

/12 /12

x=.55

3 0

3 years ago

Read 2 more answers

Thetime(inhours)requiredtorepairamachineis an exponentially distributed random variable with parameter λ = 1 . What is 2 (a) the

mihalych1998 [28]

Answer:

a) 0.1353

b) 0.3679

Step-by-step explanation:

Let's start by defining the random variable T.

T : ''The time (in hours) required to repair a machine''

T ~ exp (λ)

T ~ exp (1)

The probability density function for the exponential distribution is

(In the equation I replaced λ = L)

$f(x)=Le^{-Lx}$

With L > 0 and x ≥ 0

In this exercise λ = 1 ⇒

$f(x)=e^{-x}$

For a)

$P(T>2)$

$P(T>2)=1-P(T\leq 2)$

$P(T>2)=1-\int\limits^2_0 {e^{-x} } \, dx$

$P(T>2)=1-(-e^{-2}+1)$

$P(T>2)=e^{-2}=0.1353$

For b)

$P(T\geq 10/T>9)$

The event (T ≥ 10 / T > 9) is equivalent to the event T ≥ 1 so they have the same probability of occur

$P(T\geq 10/T>9)=P(T\geq 1)$

$P(T\geq 1)=1-P(T$

$P(T\geq 1)=1-(-e^{-1}+1)=e^{-1}=0.3679$

4 0

3 years ago

The box plot shows the number of home runs hit by 43 players during a baseball season which stament best describes the data

ozzi

The number of data values between the lower quartile and the median is less than the number of data values between the upper quartile and the median.

Hope this helps!

6 0

3 years ago

What is the explicit formula for this sequence?

ddd [48]

Answer:

$a_n=-7+4(n-1)$

$a_n=-7+(n-1)(4)$

Step-by-step explanation:

-7,-3,1,5,... is a arithmetic sequence.

Arithmetic sequences have a common difference. That is, it is going up by 4 each time.

When you see arithmetic sequence, you should think linear equation.

The point-slope form of a line is $y-y_1=m(x-x_1)$ .

m is the common difference, the slope.

Any they are using the point at x=1 in the point slope form. So they are using (1,-7).

So let's put this into our point-slope form:

$y-(-7)=4(x-1)$

$y+7=4(x-1)$

Subtract 7 on both sides:

$y=-7+4(x-1)$

So your answer is

$a_n=-7+4(n-1)$

6 0

3 years ago

When graphing the inequality. 2 - 8> -20 is it open or closed dot, and is it shaded to the left or the right?​

When graphing the inequality. 2 - 8> -20 is it open or closed dot, and is it shaded to the left or the right?