Mrs. Baxter needs to buy new headphones for all 559 students. If each headphone costs 15 dollars, how much will it cost Mrs. Baxter to buy all the headphones? (ik its easy i just cant get the right answer somehow)

Q1:  y = 25x + 500

Q2: y = 30x + 400

Q3: 20 years

Q4: Standard washing machine

"Which equation represents the cost of the high-efficiency washing machine over a given number of years?"

NOTE: There will be a lot of reading at first, however, it covers the process of the first question and the second.

1.1 - Pinpointing key terms

This is a useful skill that never stops being practiced. The trick to it in this situation is to cross-examine information which, in our case, is the word problem and the graph.

Doing this we will notice this;

"Which equation represents the cost of the high-efficiency washing machine over a given number of years?"

For further clarification, we will look specifically at these two columns in our chart to answer the first problem

1.2 - Deciding which formula would best represent the data

The slope-intercept formula is used to measure data trends, and as such we can use it, and its rules, here. (Technically f(x) in general is universally recognized for this.)

1.3 - Determine which column to assign as the x values and which to assign as y values

Our y-axis is what we're measuring for, and that we want to find, and our x-axis is for the values that which our y values change in correlation to.

We want to find the high-efficiency cost, we'll as a result assign that column as the y values, at any given year, which in this case was given

1.4 - Find the slope

To do this we'll use the slope formula

[tex]Slope = m = \frac{rise}{run} = \frac{change~in~y}{change~in~x} = \frac{y_2~-~y_1}{x_2~-~x_1}[/tex]

1.4.1 - Defining variables of slope formula

[tex]x__1[/tex] means the first x value of two consecutive points

[tex]x__2[/tex] second x value

(Must be to the right of the first point on a graph, greater than)[tex].^{*Note~1}[/tex]

NOTE: [tex]y__{2}[/tex] [tex]is~derived~from~the~y~value~that~corresponds~with~x__2[/tex]; [tex]and[/tex] [tex]y__1[/tex] [tex]from~x__1[/tex]

Further help in understanding this concept

To help you visualize I'll convert the variables to points

[tex]\left[\begin{array}{ccccc}Number~of~years&|&high-efficiency~cost&|&point\\1&|&525&|&(1, 525)\\2&|&550&|&(2, 550)\\3&|&575&|&(3,575)\end{array}\right][/tex]

1.4.2 -Putting it all together

In this case, we'll use (1, 525) and (2, 550)

As a result of defining of variables section, our x1 and y1 is (1, 525) and our x2 and y2 is (2, 550)

So, now lets plug and solve

(y2-y1)/(x2-x1)

On top:

y2 - y1 = 550-525 = 25

On the bottom

x2 - x1 = 2 - 1 = 1

Therefore our slope is 25/1 which is 25

1.5 - Finding our y-intercept, b, for y = mx + b

All we need to do now that we know the slope, and that we have a chart, is continue the trend in reverse to find y

because our slope was 25/1 that means that y increases by 25 for every increase of 1 that occurs in our x;

The reverse is for every decrease of 1 x, y decreases by 25

Using that we'll need to decrease our x and y accordingly until x equals 0

 (1, 525)

- (1, 25)

 (0, 500)

Our y intercept, b, in this case is 500

Therefore now we have the needed information to complete the formula

y = mx + b

y = 25x + 500

"Which equation represents the cost of the standard washing machine over a given number of years?"

2.1-2 - Assigning x and y

y = Standard Cost

x = Number of years (given)

y = mx + b

2.3 - Find the slope

[tex]Slope = m = \frac{rise}{run} = \frac{change~in~y}{change~in~x} = \frac{y_2~-~y_1}{x_2~-~x_1} = \frac{460~-~430}{2~-~1} = \frac{30}{1} = 30[/tex]

2.4 - Find the y-intercept, b, using the slope

 (1, 430)

- (1, 30)

(0, 400)

y-intercept = b = 400

2.5 - Plug it in slope-intercept form

y = mx + b

y = 30x + 400

"After how many years of use would the washing machines cost the same amount?"

We need to set the two equations equal to each other, and thanks to the fact they're both equal to y, this allows us to do so through substitution

3.1 - Write the equations

y = 25x + 500

y = 30x + 400

3.2 - Substitute an equation in for the y of the other and simplify and solve algebraically

30x + 400 = 25x + 500

       - 400             -400

-25x            -25x            .

           5x = 100

             x = 20

After 20 years they will be equal

"Which washing machine would be the more practical purchase if kept for 9 years? "

To answer this we just plug in 9 for x in each equation and see which is cheaper

4.1 - Rewrite

High Efficiency

y = 25x + 500

Standard

y = 30x + 400

4.2 - Plug in

High Efficiency

y = 25(9) + 500

Standard

y = 30(9) + 400

4.3 - Solve

High Efficiency

y = 25(9) + 500

y = 225 + 500

y = 725

Standard

y = 30(9) + 400

y = 270 + 400

y = 670

In this case the standard would cost less therefore our answer is the standard washing machine

Answer:

p=-9

Step-by-step explanation:

9+p=-p-10+1

9+p=-p-9

-9 +p  +p -9

2p=-18

p=-9

Answer:

52-LCM=40 53-LCM=18 54-LCM=24 55-LCM=56

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

Ethan

Step-by-step explanation:

Get a common denominator and then subtract Ethan from the whole.

Answer:

i think it is 1 or 5

Step-by-step explanation:

The required volume of the given cylinder will be 1607.7 cubic inches.

The volume of a cylinder is equal to the product of the area of the circular base and the height of a cylinder. The volume of a cylinder is defined as the space occupied by the cylinder as the volume of any three-dimensional shape is the space occupied by it

V = πr²h

where 'r' is the radius of the base (circle) of the cylinder

'h' is the height of the cylinder

Given that the radius and height of a cylinder are 8 in. and 8 in. respectively

The volume of a cylinder V = πr²h

As per the given question,

Here r = 8 in. and h = 8 in.

The of a cylinder = 3.14 × (8)² × (8)

Apply the multiplication operation,

The volume of a cylinder = 1607.7 cubic inches

Therefore, the required volume of the given cylinder will be 1607.7 cubic inches.

Learn more about the volume of the cylinder here :

brainly.com/question/16134180

#SPJ2

Answer:

31, 33, 35, 37, 39, 43, 45

Step-by-step explanation:

Answer:

31, 33, 35, 37, 39, 43, 45

Step-by-step explanation:

Hope I helped

Have a great day

Answer:

increasing-positive slope

decreasing-negative slope

constant-zero slope

Step-by-step explanation:

Positive slope would be the graph increasing because the line would be going up and to the right.

Negative slope would be the graph decreasing because it would be going down, and to the right.

Zero slope would be constant since it does not change.

Hope this helps! If you have any questions on how I got my answer feel free to ask. Stay safe!

Answer:

Step-by-step explanation:

3

Answer:

180

Step-by-step explanation:

i think

Answer:

200.96 centimeters squared

Step-by-step explanation:

16 / 2 = 8

3.14 x 8 x 8

Since the formula is 3.14r^2, you have to divide the diameter into 2 raidiuses to get the circle area.

Answer:

5399533

Step-by-step explanation:

Ehh

Answer:

we are not able to answer this because you did not put answers nor a question

Answer:

it is b

Step-by-step explanation:

x/9.99=35/100 and if u cross multiply 9.99X35 divided by 100 it is 3.4965 which are the savings so 9.99-3.4965 is 6.4935 so it is b

Answer:

(7+3)+8

Step-by-step explanation:

Answer:

48 divided by 3 = 16

Step-by-step explanation:

If you divided 54 apples into 6 groups, 9 apples are in each group.

Answer:

the answer for number 1 is 72

Step-by-step explanation:

Assume the unknown value is 'Y'

18 = 25% x Y

18 = 25/100 x Y

Multiplying both sides by 100 and dividing both sides of the equation by 25 we will arrive at:

Y = 3 x 100/25

Y = 72%

Answer: 18 is 25 percent of 72

If you want to use a calculator to check my answer just simply enter 18x100÷25 and you will get your answer which is 72

Answer:

1. x =72

2. 60

3. 96

4. 5

Step-by-step explanation:

Answer:

Start at the

✔ origin

.

Move 3 units

✔ right

.

Move 6 units

✔ up

.

Plot a point.

Step-by-step explanation:

Answer:

Origin, Right, Up

Step-by-step explanation:

Answer:

200

Step-by-step explanation:

i took an edge quiz

Answer:

C

Step-by-step explanation:

Well its not A,B,orD because the first two are hundreths and the last one is way too big(greater than 1) so it must be C

Hope this helps :D Please mark brainliest if correct

Answer:

warehouse location (24,-32)

airport location (-24,32)

distance = sqrt((x2-x1)^2 +(y2-y1)^2)=

Sqrt(24--24)62 +(32--32)^2) =

sqrt(48^2 +64^2) =80

then distance from airport to the factory = -24 to 24 = 48

80+48 = 128 miles total

Step-by-step explanation:

Answer:

128 miles

Step-by-step explanation:

It is simple math

Answer:

for every inch the line goes to the right, it drops by 1/3 of an inch

Step-by-step explanation:

Using two of the points on the line, you can find the slope of the line by finding the rise and the run

The slope of a line represents the rate of change of the line.

When a line has a slope, then such line is represented by a linear equation.

A linear equation is represented as:

[tex]\mathbf{y = mx + b}[/tex]

Where m represents slope, and b represents the y-intercept.

This means that, the following line equations have a slope of 2

[tex]\mathbf{y = 2x}[/tex]

[tex]\mathbf{y = 2x + 1}[/tex]

[tex]\mathbf{y = 2x - 1}[/tex]

And the following line equations have a slope of 1/3

[tex]\mathbf{y = \frac 13x}[/tex]

[tex]\mathbf{y = \frac 13x + 1}[/tex]

For the line equations with a slope of 2.

As the line runs (horizontally) by 1 point, it rises by 2 points (vertically)

For the line equations with a slope of 1/3

As the line runs (horizontally) by 1 point, it rises by 1/3 points (vertically)

See attachment for the drawing of the lines

Read more about slopes at:

https://brainly.com/question/3605446

Answer:

11 is 27m i can't see the question for 12 tho

Step-by-step explanation:

Answer:The answer is (Negative 6) (4) + (negative 6) (two-thirds)

Step-by-step explanation:

So basically, Negative 6x4= negative 24. Then you have to add Negative 6 x two-thirds. So 6 times two-thirds equal 4. So now you just add 24 and 4. And that equals 28. :)

Answer:

6 kilograms

Step-by-step explanation:

Answer:

The answer is 6 Kilograms.

Step-by-step explanation:

Since 1000 grams are in 1 kilogram,

6 x 1000 = 6000 grams

6 being the kilograms

Answer:

-2/5

Step-by-step explanation:

you have to do y2-y1 and x2-x1