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3 years ago

What is the decimal conversion of 8 39/40 and does the decimal repeat or terminate

1 answer:

3 0

839/40 = 20.975
Scientifically speaking in numbers there is no termination existing numbers are round of but technically speaking it TERMINATES

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Victoria recently switched to a new electric company. If she uses between 0 and 400 kilowatt-hours (kWh) of electricity per mont

Gekata [30.6K]

Answer:

see the explanation

Step-by-step explanation:

<em><u>The question is </u></em>

Identify the domain and the range, using words and inequalities

Let

x -----> the number of kilowatt-hours (kWh) of electricity per month

y ----> the price per month

we know that

Part 1) For the value of x between 0 kWh and 400 kWh

$0\ kWh \leq x < 400\ kWh$

The price is equal to

$y=\$30$

therefore

The domain is the interval ------> [0,400)

The domain is all real numbers greater than or equal to 0 kWh and less than 400 kWh

The range is ($30)

The range is equal to $30

Part 2) For the value of x equal to 400 kWh or more per month

$x\geq 400\ kWh$

The domain is the interval -----> [400, infinite)

The domain is all real numbers greater than or equal to 400 kWh

The price is

$y=0.097x$

<em>Find the range</em>

For x=400 kWh

$y=0.097(400)=\$38.8$

$y\geq \$38.8$

The range is the interval -----> [38.8, infinite)

7 0

3 years ago

What is the value of (14)5?

valina [46]

Answer:

Step-by-step explanation:

7 0

2 years ago

Simplify: 3x(x^2 + 4x - 5)

Alina [70]

Answer:

3x^3+ 12x^2-15x

Step-by-step explanation:

First, you would have to distribute the 3x to everything in the parentheses. So you can write it out as (3x*x^2)+(3x*4x)+(3x*5). Solving this will give you the answer. We'll start off with (3x*x^2). Because we are MULTIPLYING, this part will equal to 3x^3. There is ONE x with 3x (think of it as 3x^1) and 2 x's in x^2, having a total of 3 x's, or x^3. Since the 3 is being multiplied as well, we can write it as 3x^3.

Second, we will solve (3x*4x). We are multiplying, so first we multiply 3*4 and then x*x. 3*4 is 12 and x*x is x^2. There are 2 x's being mutipled by each other, so the x becomes squared. Now we finish and multiply 12*x^2 wich is 12x^2.

Lastly, we solve (3x*5). 3x is being multiplied 5 times which gives us 15x.

I hope this helped :)

3 0

3 years ago

PLEASE HELP ASAP!

wolverine [178]

Answer:

1. slope

2. slope

3. slope

4. y intercept

5. slope

6. it crosses the x axis

7. when the value of y is zero

8. when the form is y = something

9. when the form is x = something

10. Positive slope

11. Negative slope

12. y=x

13. Slope Intercept form

14. Standard form

3 0

3 years ago

Learning Task II. Illustrate the following: Illustration Given 1. Line Segment MN 2. Ray XY 3. Ray YX 4. Angle ABC 5. LK

Mashutka [201]

The illustration of the given mathematical elements is as in the attached images.

<h3>Illustration of mathematical elements</h3>

For line segments;

The beginning and end of the line are specified by the assigned alphabets.

However, for rays;

The ray is illustrated to originate from a point and span on from there till infinity.

For angles;

The alphabet in the middle of the set of 3 alphabets used to identify the angle represents the center point of where the angle is located.

Read more on illustration of mathematical elements;

brainly.com/question/18430725

6 0

2 years ago