1. The printed price of a DVD player is $ 7500. If a sales tax of 8% is realised from the buyer, find the price at which the DVD player is sold?

Answer:

Step-by-step explanation:

x + y = 11

.25x + .05y = 1.15

25x + 5y = 115

-25x - 25y = -275

-20y = -160

y = 8 nickels

x + 8= 11

x = 3 quarters

3 quarters and 8 nickels

Answer:

[tex]\sqrt{x^2+y^2+1}=18[/tex]

Step-by-step explanation:

We are given:

[tex]x^2=18x+y\qquad\qquad[1][/tex]

[tex]y^2=18y+x\qquad\qquad[2][/tex]

Subtracting [1] and [2]:

[tex]x^2-y^2=18x+y-(18y+x)[/tex]

Operating:

[tex]x^2-y^2=18x+y-18y-x[/tex]

Recall:

[tex]x^2-y^2=(x-y)(x+y)[/tex]

Substituting:

[tex](x-y)(x+y)=18x+y-18y-x[/tex]

Rearranging:

[tex](x-y)(x+y)=18x-18y-(x-y)[/tex]

[tex](x-y)(x+y)=18(x-y)-(x-y)[/tex]

Dividing by x-y (recall x≠y):

[tex]x+y=18-1=17[/tex]

[tex]x+y=17\qquad[3][/tex]

Now we add [1] and [2]:

[tex]x^2+y^2=18x+y+18y+x[/tex]

Rearranging:

[tex]x^2+y^2=18x+18y+x+y[/tex]

[tex]x^2+y^2=18(x+y)+(x+y)[/tex]

[tex]x^2+y^2=19(x+y)[/tex]

Substituting from [3]

[tex]x^2+y^2=19*17=323[/tex]

Adding 1:

[tex]x^2+y^2+1=324[/tex]

Taking the square root:

[tex]\sqrt{x^2+y^2+1}=\sqrt{324}=18[/tex]

Thus:

[tex]\mathbf{\sqrt{x^2+y^2+1}=18}[/tex]

Answer:

Area: 196

Perimeter: 56

Step-by-step explanation:

1. Pick a side for both length and height and count the distance between the two coordinates (for example VU and UT)

VU = 14

UT= 14

Also important to note here that you don't even need to count the distance for both because since it's a square, all the sides are the same. Only did this to make it easier to understand the next step.

2. Since it's a square, as I said before, all sides are the same. So, you can go ahead and mark WT and VW as 14 as well.

3. To get the area, use the formula base times height.

14 x 14 = 196

4. For perimeter, simply add up all the sides (or multiply 14 by 4 since all are the same)

14+14+14+14=56

Answer:

Ummmm... Both?

Step-by-step explanation:

66k+9 OR 3(22K+3)

Answer:

k>10

k>-4

Step-by-step explanation:

-10k<-100

k>10

you flip the sign when dividing by a negative

-8k<32

k>-4

Answer:

Step-by-step explanation:

[tex]\frac{3}{2}[/tex] ÷ [tex]\frac{9}{6}[/tex]   = [tex]\frac{3}{2}*\frac{6}{9}\\[/tex]

         = [tex]\frac{18}{18}[/tex]

         = 1

Use KCF method,

Keep the first number.

Change the division to multiplication

Flip the second number

Answer:

sorry dude i need thos points

Step-by-step explanation:

Answer:

D BOTTOM RIGHT

Step-by-step explanation:

Answer:

y= 3x -5

Step-by-step explanation:

since when x is 0, and y is -5, you know that the y intercept is -5.

look at the table

1x -5 = -2

x= 3

Boom.

LONG LIVE KOREA!

Answer:

192

Step-by-step explanation:

Just multiply 24 by 8.

I think thats it tho.

Answer:

I think its 192

Step-by-step explanation:

you just do 24 times 8

Answer:

-1

Step-by-step explanation:

4 / (4/3) gives us three, which when added to -4 results in -1

Answer:

I,dont know but use M A T H W A Y it will explain with all the stepp by step and answere

Step-by-step explanation:

Answer:

1/3×t=12

t=3×12

t=36

Step-by-step explanation:

need thanks for the answer.

Step-by-step explanation:

C. This system is consistent. It has one solution.

particularly in algebra, a linear or nonlinear system of equations is called consistent

Answer:

here,

slope of line y=4x+5(m1)=-a/b

=4

slope of line -4x+y=-13(m2)=-a/b

4

here m1=m2 so,these are parallel to each other.

Answer:

she will pay $3.75

Step-by-step explanation:

Answer:

y=3x-7

Step-by-step explanation:

y=mx+b where m=slope and b=y-intercept

y=3x-7

Answer:

381.25 or 381 1/4 feet

Step-by-step explanation:

Area is a rectangle is length times width. so,

30.5*12.5 = 381.25

Answer:

y=2/3x-5

Step-by-step explanation:

First, let's put this equation into slope-intercept form.

2x-3y=24

-3y=-2x+24

y=2/3x-8

For two lines to be parallel, they must have the same slope. Therefore our slope is 2/3.

Now, we must find b. To do that we can plug the y and the x in.

-7=2/3(-3)+b

-7=-2+b

-5=b

y=2/3x-5

Answer:

y = [tex]\frac{2}{3}[/tex]x - 5

Step-by-step explanation:

Points: (-3, -7)

Equation: 2x - 3y = 24

2x - 3y = 24

-3y = -2x + 24

y = [tex]\frac{2}{3}[/tex]x - 8

y = [tex]\frac{2}{3}[/tex]x + b

-7 = [tex]\frac{2}{3}[/tex] ( -3 ) + b

-7 = -2 + b

b = -5

y = [tex]\frac{2}{3}[/tex]x - 5

Answer:

2.33 ounces

Step-by-step explanation:

Given that:

Ounces of granola used = 34.95 ounces

Number of servings of trail mix = 15 servings

Since each serving contains the same amount of granola :

Amount of granola in each serving :

Ounces of granola used / Number of servings

34.95 / 15

= 2.33 ounces of granola per serving

Answer:

the answer is 612 -4n4+6n-5772

The expression that has like terms is (C) 7n+4n-3m-6n.

An expression can be as simple as a single number or variable, or it can be more complex, involving multiple operations and variables.

For example, the expression "3x + 4" contains the variable x, along with the constant values 3 and 4, and the operations of multiplication and addition.

Like terms are terms that have the same variables raised to the same powers.

In the first expression, 9n^7 and -2n have different powers of n, so they are not like terms. The constant term, -4112, is also not like any other term.

In the second expression, 3n and -3 are like terms, as they are both constants with no variables.

In the third expression, 7n, 4n, and -6n are all like terms because they all have the same variable, n, raised to the first power.

In the fourth expression, -4n^4 and 6n have different powers of n, so they are not like terms. The constant term, 612-5772=-5160, is also not like any other term.

Therefore, the expression that has like terms is (C) 7n+4n-3m-6n.

To know more about an expression follow

https://brainly.com/question/12517367

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Happy Holidays!

[tex]\large\boxed{f(-2) = 15}[/tex]

f(x) = -2x + 11

Find f(-2) by substituting in -2 for x:

f(-2) = -2(-2) + 11

Simplify:

f(-2) = 4 + 11

f(-2) = 15

Answer:

18 eggs

Step-by-step explanation:

6 family member has 1 omelet, each omelet needs 3 eggs, 6 x 3 = 18 eggs :D

Answer:

2357.14

Step-by-step explanation:

  x - .30x = 1500(1.10)

          .7x = 1650

            x = 2357.14

Answer:

no they are parallel because the slope is the same they just are at different y- intercepts

Answer:

x<-4

Step-by-step explanation:

First you have to add 4 by both sides, which will give you 8x<-32.

Then  just divide both sides by 8 and you should get the same answer.

Answer:

The answer is that the baby giraffe is 12,000 grams.

Please mark this as brainliest, thx. :)