Mathematics High School

translate the following into interval notation: "The union of all numbers greater than eight, and less than or equal to negative four".

Answers

Answer 1
() is for <>
[] is for ≤≥


greater than 8 means
x>8 or
8 to infinity not counting 8 or
(8,∞)

less than or equal to -4 is
x≤-4 or
from -∞ to -4
or
(-∞,-4]

the infinity has a () sign since you cannot equal infinity, you can approach it

U is unity so

(-∞,-4] U (8,∞)

Related Questions

How many times can 57 go into 413?

Answers

7.68 however if it's one significant digit then it's 7

Intersecting chords form a pair of congruent, vertical angles.

A. True
B. False

Answers

I believe the answer to this item is the first choice, true. Intersecting chords form a pair of congruent vertical angles. Vertical angles are formed and located opposite of each other having the same value. Thus, the answer to this item is True.

Answer:

True!

Step-by-step explanation:

The maximum speed of the Tupolev Tu -144 airliner is 694 m/s. What is this speed in kilometers per hour?

Answers

The answer is 2498.4km/h

The speed is [tex]694m/s = \frac{694m}{1s} [/tex]

1 m = 0.001 km          ⇒        694 m = 694 * 0.001 km = 0.694 km
1 h = 60 min = 60 * 60 s = 3600 s 

Therefore:
[tex] \frac{694m}{1s}= \frac{3600*0.694km}{3600s} = \frac{2498.4km}{1h} =2498.4km/h[/tex]

Answer: the correct answer would be 2498.4 km/h

*i got this question correct*

Evaluate 7 + (-3x2) for x = 0.

-2
0
4
7

Answers

I hope this helps you




7+(-3.0^2)



7+0


7

Answer:7+(-3.0^2)

7+0

7

Step-by-step explanation:

60 minutes is 20% of ? minute s

Answers

60 minutes is 20% of 300 minutes
300 minutes is the answer :))))

Dominic, Ralf and Peter have just eaten a HUGE Christmas meal. Dominic now weighs half as much as Ralf, and Peter weighs three times as much as Dominic. Together they weigh 720 pounds. How much does Dominic weigh?

Answers

Dominic is 120 pound's, Ralf is 240 pound's, and Peter is 360 pound's. (I know you only asked for Dominic but i felt like giving you the other's to).:3 

Which represents the inverse of the function f(x) = 4x? a) h(x) = x + 4 b) h(x) = x – 4 c) h(x) = x d) h(x) = x witch is right

Answers

I hope this helps you

A prime number is always greater than 1 false or truth and why

Answers

its false because 1 is a prime number

hope this helps you

A prime number must be greater than 1 because by definition, a prime number has exactly two distinct positive divisors: 1 and the number itself. If a number is less than or equal to 1, it cannot be prime.

The statement that a prime number is always greater than 1 is indeed true. A prime number is defined as a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. If a number is less than or equal to 1, it cannot be prime because the prime numbers must be greater than 1 to have at least two distinct positive divisors (1 and the number itself).

For example, the first few prime numbers are 2, 3, 5, 7, 11, and 13. Each of these numbers is greater than 1 and cannot be divided evenly by any number other than 1 and itself. By contrast, the number 1 is not considered a prime because it has only one positive divisor, which is 1 itself. Since primes must have exactly two distinct divisors, 1 does not meet this criterion.


125 + .375=?


0.654 + 0.389 - 0.293=?

Answers

If it's 125 + 0.375 then the answer is 125.375

and for the second it's 0.75
125+0.375 equals 125.375
0.654+0.389-0.293 equals0.75

280 divided by 30 what is it

Answers

is 9.3333333333 so basically 9.3 repeating

The division yields to quotient is 9, and there is 10 as remainder

We have to divide 280 by 30.

So, the division performed as

                         30 | 280  | 9

                                 270

                            -______

                                    10

                               

So, the quotient is 9, and there is 10 as remainder.

So, 280 divided by 30 is equal to 9.33 (rounded to two decimal places) or simply 9.

Learn more about Division here:

https://brainly.com/question/21416852

#SPJ6

For the function f(x)=x+5, what is the ordered pair for the point on the graph when x=4w?

Answers

(4w, 4w + 5)

i hope this helps u 

Answer:

(4w, 4w + 5)

Step-by-step explanation:

If A(x1, y1), B(x2, y2), C(x3, y3), and D(x4, y4) form two line segments, AB and CD , which of these conditions needs to be met to prove that AB is perpendicular to CD?

see attachment for choices

Answers

the answer is the third choice
it is c)
[y4-y3/x4-x3][y2-y1/x2-x1]= -1

proof
two lines are perpendicular if the product of their slope equals -1

Answer:

[tex]\frac{y_4-y_3}{x_4-x_3}\times \frac{y_2-y_1}{x_2-x_1}=-1[/tex]

Step-by-step explanation:

We know that,

If two line segments are perpendicular then the product of their slope is equal to -1,

Also, the slope of a line segment having the end points [tex](x_n,y_n)[/tex] and [tex](x_m,y_m)[/tex] is,

[tex]m=\frac{y_m-y_n}{x_m-x_n}[/tex]

So, the slope of line segment AB having end points [tex]A(x_1,y_1)[/tex] and [tex]B(x_2,y_2)[/tex] is,

[tex]m_1=\frac{y_2-y_1}{x_2-x_1}[/tex]

Similarly, the slope of line segment CD having end points [tex]C(x_3,y_3)[/tex] and [tex](x_4,y_4)[/tex] is,

[tex]m_2=\frac{y_4-y_3}{x_4-x_3}[/tex]

Hence, by the above property of perpendicular line segments ,

If AB and CD are perpendicular then,

[tex]m_1\times m_2=-1[/tex]

[tex]\implies \frac{y_4-y_3}{x_4-x_3}\times \frac{y_2-y_1}{x_2-x_1}=-1[/tex]

Third option is correct.

The table shows the total number of hamburgers and hot dogs sold at a food stand at a local fair on two separate days. It also shows the dollar amount taken in each day.

Hamburgers Hot Dogs Total
Day 1 200 150 $1,450
Day 2 200 250 $1,750
What is the cost of a hamburger and the cost of a hot dog?

Enter your answers in the boxes.
Hamburger: $

Hot dog: $

Answers

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Based on the table shown above the cost of the hamburger is USD 5 and the cost of hot dog is USD 3


The hourly operating cost of a certain plane, which seats up to 295 passengers, is estimated to be $3770. If an airline charges each passenger a fare of $100 per hour of flight, find the hourly profit P it earns operating the plane as a function of the number of passengers x ...?

Answers

Final answer:

The hourly profit of an airline operating a plane can be calculated by subtracting the operating cost from the revenue earned from passengers.

Explanation:

The hourly profit of an airline operating a plane can be expressed as the difference between the revenue earned from passengers and the operating cost of the plane.

The revenue earned from passengers can be calculated by multiplying the fare per passenger by the number of passengers. In this case, the fare is $100 per hour of flight, and the number of passengers is represented by x.

The operating cost of the plane is given as $3770 per hour.

Therefore, the hourly profit P can be expressed as:

P = (fare per passenger) * x - (operating cost of the plane)

Substituting the given values:

P = $100 * x - $3770

Tomorrow, 567 people will want tickets to concert. only 417 tickets are available. how many people will be able to get tickets?

Answers

150. Subtract the numbers and you would get your answer. Hope this helps Also is their another part to this problem?
This has to be some kinda of trick question because if there are only 417 tickets, then only 417 people out 567 will get tickets. Is there anything else to the question?

What is 830% written as a decimal?


8300


83


0.0083


8.3

8.3 i think

Answers

it is 830. ok just put the decimal in the back

HELP ASAP!!!

The markup on appliances at Tom’s store is 50%. If the wholesale price of a dishwasher is $380, what price will Tom list when selling the dishwasher?

A. $570
B. $665
C. $760
D. $950

Answers

C is the answer to your question
I hope this helps you

How to put 0.258 0.4 0.52 1.25 0,04 from least to greatest?

Answers

0.04, 0.258, 0.4, 0,52, 1.25 is the correct order. Hope this helps! ;) 

The sum of two numbers is 10. if one number is subtracted from the other the result is -2. find two numbers

Answers


Form an equation to describe the situation
x+y=10 
Then use the other information they gave you and form another equation
x-y=2
You can add the two equations together, and you see that the y variables cancel out(elimination)
2x=12
Solve for one variable and then plug it back into the original equation
x=6
6+y=10
y=4

a(x+b)=c solve for x

Answers

A(x + b) = c
x+b = c / A
x = c/A - b

Hope this helps!

15 percent of 45.4 is what?

Answers

15% of 45.4......turn percent to decimal..." of " means multiply
0.15(45.4) = 6.81 <==
15/100 x 45.4
0.15 x 45.4
= 6.81

Simplify.

1/4+4(1/2−3/4)^2

Answers

Hope this helps. If you have any further question, ask in comments.

The only part of the United States explored by Russia was the:

A : Hudson River
B : Southwest and Mexico
C : Mississippi River
D : Northwest coastline

Answers

It's the Northwest coastline

Answer:

d

Step-by-step explanation:

d

Write two (2) scenarios that describe two different real-world functions. Think of your own variables that are not included in the above list. As you did for the other functions, identify the independent and dependent variables and assign the letters x and y to represent each variable quantity. Then create a set of at least five ordered pairs in (x, y) form with values that make sense for your function.

Answers

1. Ryan had 4 people coming over but each second person brought 5 different people, let X represent the number of people brought along, what is X?

2. Lexy has 456$ she gave it to four friends. Let M represent how much she gave each friend if she was left with 50$ What does X equal?

Which of the following represents the graph of f(x) = 2x + 2? i will give a medal if you help cooperatively

Answers

our function is:
f(x) = 2^x + 2

To find which graph represents this function we should find at least 2 points. We take some value of x we want and calculate y for it. And do that at least 2 times (can be done 1 time but its likely that some graph match in some points)

for x = 0 we get
f(x) = 3

for x = 1
f(x) = 4

we can also note that f(x) cannot be less than 2 because 2^x is always greater than 0, and that as x increments f(x) increments. With all of this in mind answer is last graph.

Answer is graph D

What is the area of a regular octagon with 12 as each side. Round to nearest hundredth.

Answers

695.29 is the area of a octagon with a area of 12 as each side.

The sum of the perimeters or two different squares is 32 centimeters , and the difference between there perimeters is 8 centimeters. if x represents the side length of the larger square and y represents the side length of the smaller square , Which of the following systems of equations could be used to find the dimensions of the squares?

A. x+y=32
x-y=8

B. 4x+4y=32
4x-4y=8

C. 2x+2y=32
2y-2x=8

D. 2x+2y=32
4x-2y=8

Answers

Final answer:

The correct system of equations to find the dimensions of the squares is option A: x + y = 32 and x - y = 8.

Explanation:

To find the dimensions of the squares, we can set up a system of equations. Let x represent the side length of the larger square and y represent the side length of the smaller square.

The sum of the perimeters is given as x + y = 32. The difference between the perimeters is given as x - y = 8.

So, the correct system of equations to find the dimensions of the squares is option A: x + y = 32 and x - y = 8.

Final answer:

The correct system of equations to find the dimensions of the squares is x + y = 32 and x - y = 8. Solving this system using the method of elimination gives us the dimensions of the squares: 20 cm for the larger square and 12 cm for the smaller square.

Explanation:

The correct system of equations to find the dimensions of the squares is:

x + y = 32

x - y = 8

To solve this system, we can use the method of elimination. Adding the two equations will eliminate the y terms, allowing us to solve for x.

Adding the equations:

x + y + x - y = 32 + 8

2x = 40

x = 20

Substituting the value of x back into one of the original equations, we can solve for y.

Using the equation x + y = 32:

20 + y = 32

y = 12

Therefore, the dimensions of the larger square are 20 cm, and the dimensions of the smaller square are 12 cm.

Given the function f(x) = x3 + 2x2 − 3x − 5, what is resulting function when f(x) is shifted to the right 1 unit?

Answers

When shifted to the right 1 unit it would be:
f(x - 1) = (x - 1)^3 + 2(x - 1)^2 - 3(x - 1) - 5 
= (x^3 - 3x^2 + 3x - 1) + 2(x^2 - 2x + 1) - 3(x - 1) - 5 
= x^3 - 3x^2 + 2x^2 + 3x - 4x - 3x - 1 + 2 + 3 - 5 
= x^3 - x^2 - 4x - 1 
I hope this helps

What is the surface area of a piece of pipe that is open at both ends, has a radius of 6 inches, and a height of 18 inches? (Use 3.14 for π.)

Answers

 it's 2x3.14 times 6 times 18

2π(6)(18)
aka lateral area

you can imagine it like this:
imagine you take a sheet of paper and roll it into a tube
the lateral aera=circumference times height because if yo open the paper, the area is legnth times width, and when you roll it up, width turns into circumference

so

LA=h(circumference0
LA=h2pir
LA=18*2*pi*6
LA=216pi
pi=3.14 for this question
LA=678.24

SA=678.24 in²

the total amount of degrees in the center is 360 degrees if all five vertex angles meeting the center are congrent what is the measure of a base angle of one of the triangles

A) 54 degrees
B) 72 degrees
C) 108 degrees
D) 144 degrees

Answers

The answer to this question is B)72, all you have to do is divide 360 by how many sides there are and there happen to be five of them and when you divide you get 72 as your answer.

Answer:

(B) 72°

Step-by-step explanation:

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