Norah bought a guitar that was on sale for 15% off the regular price of $200. The total cost included 8% sales tax. What was the total cost?

A)$186.00

B)$183.60

C)$178.00

D)$176.80

Answer:

12

Step-by-step explanation:

8-(-4)=8+4=12

The product of two negative integers is not negative because multiplying two negative numbers always gives positive result.

Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division.

The result of a multiplication operation is called a product.

So, to prove product of two negative integers is not negative

Taking the example of (-1) ·(-1).

Now since multiplying two negative numbers always gives positive result.

Thus, (-1) ·(-1) = +1

which is not negative.

Thus, the product of two negative integers is not negative because multiplying two negative numbers always gives positive result.

To learn more about multiplication:

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Answer:

y = -x + 6

Step-by-step explanation:

Slope intercept form is y = mx + b.

So distribute the negative sign on the right side to get:

y - 5 = -x +1

Then  add the 5 on the left side to both of the sides to get y alone, then you will get:

y = -x +6

That is in slope intercept form.

Answer

Step-by-step explanation:  it would be A). x+8

Answer:

The answer is 64

Step-by-step explanation:

Answer:

2.(b) w= 3

3. x= -3 or x= 3

Step-by-step explanation:

2.(b) Method 1:

[tex] \frac{2w - 1}{5} + w + 2 = 2w \\ \frac{2w - 1}{5} = 2w - w - 2 \\ [/tex]

Simplify:

[tex] \frac{2w - 1}{5} = w - 2[/tex]

×5 on both sides:

[tex]2w - 1 = 5(w - 2)[/tex]

Expand:

[tex]2w - 1 = 5w - 10[/tex]

Bring constants to 1 side, w terms to the other:

[tex]5w - 2w = 10 - 1[/tex]

Simplify:

[tex]3w = 9[/tex]

Divide both sides by 3:

[tex]w = 9 \div 3 \\ w = 3[/tex]

Method 2:

[tex] \frac{2w - 1}{5} + w + 2 = 2w[/tex]

Multiply by 5 throughout:

[tex]2w - 1 + 5(w + 2) = 5(2w)[/tex]

Expand:

[tex]2w - 1 + 5w + 10 = 4w[/tex]

Simplify:

[tex]7w - 9 = 4w[/tex]

+9 on both sides:

[tex]7w = 4w + 9[/tex]

-4w on both sides:

[tex]7w - 4w = 9[/tex]

Simplify:

[tex]3w = 9[/tex]

Divide by 3 on both sides:

[tex]w = 3[/tex]

3. [tex] \frac{6x - 12}{3} + 4 = \frac{18}{x} [/tex]

Multiply by 3x on both sides:

[tex] \frac{3x(6x - 12)}{3} + 3x(4) = \frac{3x(18)}{x} \\ x(6x - 12) + 12x = 3(18)[/tex]

Expand:

[tex]x(6x) - x(12) + 12x = 54 \\ 6x^{2} - 12x + 12x = 54 \\[/tex]

Simplify:

[tex]6 {x}^{2} = 54[/tex]

Divide by 6 on both sides:

[tex] {x}^{2} = 9[/tex]

-9 on both sides:

[tex] {x}^{2} - 9 = 0[/tex]

Factorise:

*Since a²-b²= (a +b)(a -b),

[tex] {x}^{2} - {3}^{2} = 0 \\ (x + 3)(x - 3) = 0[/tex]

Thus,

x +3= 0 or x -3= 0

x= -3 or x= 3

Answer:

w = 3

Step-by-step explanation:

(6x-12)/3 + 4 = 18/x

Simplify fraction

2x -4 +4 = 18/x

Combine -4+4=0 Divide by 2 to reduce

x = 9/x

Multiply both sides by x

x² = 9

x = 3, -3

Answer:

3/2

Step-by-step explanation:

The equation for slope is y/x.

This does not need to be simplified because you don't want a decimal when using slope. To find the slope pick an x value and its corresponding y value

Answer:

any number more than 0 including 0

Step-by-step explanation:

Answer:

It's 0,

Step-by-step explanation:

Why because 12 is less then if your were going to create a line and 0 is going to be in the middle, that shows in that case 12 is going to be on the left side of the 0 because 12 is a positive number and 0 is not.

Answer:

6

Step-by-step explanation:

GCF=Greatest common factor

we know that it can not be 15 due to 15 not going into 54 due 54 not ending in a 5 or 0. and we know it cannot be 9 either due to 9 not going into 30

so it is 6 because 6 goes into 30 5 times and 6 goes into 54 9 times

Hope this helps

Answer:

6

Step-by-step explanation: (Sorry if this doesn’t help)

Answer:

The answer is a i believe

Step-by-step explanation:

Answer:

I don't see a chart

Answer:

The unit rate is 15.

Explanation:

Time (hours)

6: $90            90/6 = 15

12: $180         180/12 = 15

18: $270        270/18 = 15

24: $ 360      360/24 = 15

You should find the unit rate by dividing y by x. I divided all of the y's by the x's and I got 15 for all of them, which means that the unit rate is 15.

Answer:

imma be honest, im not sure how to save images but the correct answer is the one where all the Y-values are 5. this is because the change in y-values is 0, so that would be the numerator over whatever the change in x-values would be, simplifying to zero. so it would be a horizontal line since all the y-values are the same

Answer:

the answer would be c based on the proportional value

Answer:1.25

Step-by-step explanation:because tbh id ont know the work but my teacher showed me this

Hi! (-8)(-6) can also be written as -8 × -6. Ignore the negative signs for now.

8 × 6 = 48.

When two negative numbers are multiplied together, the answer is always positive. Think of it as two negative signs (-) make a positive sign (×) when put together.

The answer is -48.

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I hope this helps you! Good luck and have a great day. ❤️✨

Answer:

Mary is adding - 2

Step-by-step explanation:

Mary is adding - 2 to - 2 but instead she is supposed to be multiplying - 2 to - 2

Answer:

..A. is the answer. a2 + b2 = c2 is the formula used to find the hypotenuse (the longest leg)..

Step-by-step explanation:

Answer:A. is the answer. a2 + b2 = c2 is the formula used to find the hypotenuse (the longest leg)  

Step-by-step explanation:

didnt you already ask us this ?!

Answer:

There is no difference/they are the same

Step-by-step explanation:

5/8 is the same as 5/8

3/4 is the same as 6/8

3 *2 = 6

__      _

4*2 = 8

(2/2 = 1)

I think it is 4

:)

hope this helps

Answer:

2 hrs and 30 min

Step-by-step explanation:

Answer:

Sorry, I only figured out one.

3 = 21 divided by 7

Step-by-step explanation:

Answer:

28.166666666667%

Answer:

with what

Step-by-step explanation:

why did you scribble out everything?

Answer:

-12, -14, 11, 10

Step-by-step explanation:

Answer:

Your answer is 3,947 ÷ 45 = 87 r 32

Hope this Helps

<3

Answer:

$308

Step-by-step explanation:

Let x=hourly pay

5x=70

x=14

22(14)

=308

Answer:

$308

Step-by-step explanation:

Let the amount earned be a

and hours be h

a ∝h

a = kh where k is the constant

if $70.00 is earned in 5 hours,

70 = 5k

k = 70/5

k = 14

For 22 hours, it is

a = kh

a = 14 × 22

a = 308

Answer:

Number 1 and 2

Step-by-step explanation:

For number 1, you have to distribute the 2 so 2*x=2x, and 2*4=8

That makes 2x+8 and number 2 is the only answer

Answer:

6

Step-by-step explanation:

4 / 2/3

Think of it like this.

4 / 2/3 (if this were in fraction form)

4 * 3/2 (Reciprocal)

12/2

6