Chris paid $9.18 for a necklace. This amount includes the sale tax of 8% what was the cost of the necklace before tax?

Answer:

A

Step-by-step explanation:

There are 2 ways you can do this. I'll show you one!

1. Find the Slope

      a. use the slope formla: (y1-y2)/(x1-x2)

               (4-1)/(-2-1)= 3/-3= -1

      This eliminates both B and D, as their slopes are -3

2. Now analyze the last 2 equations

        a. A goes through the ordered pair (-1, 1)

        b. C goes through the ordered pair (1, 1)

        The line we want goes through (-1, 1), so  A is the correct answer!

[tex]y-1=-3(x+1)[/tex] equation represents the line.

The point slope form is used to find the equation of the straight line which is inclined at a given angle to the x-axis and passes through a given point.

Given points

[tex](x_{1} ,y_{1} )[/tex] = (-1, 1)

[tex](x_{2} ,y_{2} )[/tex] = (-2, 4)

Using point slope form

We know that the equation of line passing through points [tex](x_{1} ,y_{1} )[/tex] and  [tex](x_{2} ,y_{2} )[/tex] is

[tex]y-y_{1} =\frac{y_{2}-y_{1} }{x_{2}-x_{1} }( x-x_{1})[/tex]

Therefore equation of line passing through points (-1, 1) and  (-2, 4) is

[tex]y-1=\frac{4-1}{-2+1}(x-(-1))[/tex]

[tex]y-1=\frac{3}{-1} (x+1)[/tex]

[tex]y-1=-3(x+1)[/tex]

Option B is correct.

Find out more information about point-slope form here

brainly.com/question/24436844

#SPJ2

Answer:

x > 0

Step-by-step explanation:

6x -12 > -12

6x > -12 +12

6x > 0

x > 0/6

x > 0

Answer:

24 would be the correct answer.

Step-by-step explanation:

24 would be the correct answer because 2/3 x 18 + 12 = 24.

Making 2/3 the the fraction that was used and already installed.

Making 18 the number of the already installed applications

Making 12 the number of the additional installed applications.

I hope this helped!!!

Answer:

2 x 2 x 2 x 3 x 7 x 7 x 7

Step-by-step explanation:

it is Wednesday my dudes

Answer:

Dario's hourly salary

is $11

Answer:

Step-by-step explanation:

5/7 ÷ 3 1/3 = 5/7 ÷ 10/3

                 [tex]= \frac{5}{7}* \frac{3}{10}\\\\= \frac{1}{7}* \frac{3}{2}\\\\= \frac{3}{14}[/tex]

Answer:

k+7

Step-by-step explanation:

because k is the age of kit so Anika is 7 years older, so u have to add

sorry if I'm wrong

Answer:

Cells create usable energy through Cellular Respiration.

Step-by-step explanation:

If you think about it, cellular respiration is the way cells make their food, or usable energy. Therefore, the answer would be up above-------------------------^^

Answer:

I am not too sure but I think 1/3

Step-by-step explanation:

Answer:

16x^6y^10z^2

Step-by-step explanation:

Well without doing much math I already know that (4x^3)^2 is 16x^6 because 4*4=16 and 3*2=6.

That leaves the last answer choice.

Answer:

sin (3 x) - cos (x)=

= sin (2x + x) - cos (x)=

= sin 2x * cos x + cos 2 x * sin x - cos x = ( using additional formulas )

= 2 sin x cos² x + ( cos² x - sin² x ) sin x - cos x =

= 2 sin x cos² x + ( 1 - sin² x - sin² x ) sin x - cos x =

= 2 sin x cos² x + ( 1 - 2 sin² x ) sin x - cos x =

= 2 sin x cos² x + sin x  - 2 sin³ x - cos x

Answer: B )

Step-by-step explanation:

Answer:

bat dalawa po iyang gi pa question nyo

Answer:

D

Step-by-step explanation:

Neither Alex nor Jo are correct, because surface area is a 2-dimensional quantity, so it would be given in just square units, not linear nor cubic.

Answer:

1 = B

2 = 3/7

3 = B

4 = J

5 = 1/25

6 = H

7 = D

8 = G

9 = A

10 = 1/3

11 = D

Step-by-step explanation:

Answer:

-12n-28

Step-by-step explanation:

4(-3n-7)

first- use the distribution property (4*-3n and 4*-7)

so, -12n-28

Answer:

-12n -28

Step-by-step explanation:

4(- 3n - 7)

-12n -28

Answer:

The calculation for ROC is simple in that it takes the current value of a stock or index and divides it by the value from an earlier period. Subtract one and multiply the resulting number by 100 to give it a percentage representation.

Step-by-step explanation:

Answer:

A -2V7

Step-by-step explanation:

you just have to subtract the coefficients

3-5=-2

-2V7

Answer:

-2√7

Step-by-step explanation:

Assuming the 'V's are supposed to be radical signs:

[tex]3\sqrt{7}-5\sqrt{7}\\\\(3-5)\sqrt{7}\\\\\boxed{-2\sqrt{7}}[/tex]

Hope this helps.

Answer:

Step-by-step explanation:

It is the turning point, (100,0)

Answer:

The vertex of a parabola is the point at the intersection of the parabola and its line of symmetry

Step-by-step explanation:  it is the center so it would be 100

Answer: he needs to mesure

Step-by-step explanation:

Answer: 3(a+b)

Step-by-step explanation:

Answer:

a) 12xy

b) 30pqr

Step-by-step explanation:

multiply the numbers and since x and y are not common terms then keep them as xy multiplied with 12

same goes with b)

Answer:

a would be 12xy

b would be 30pqr

Step-by-step explanation:

Again, don't really know how to explain, just multiply the numbers and add on the letters

Answer:

1,500 calories

Step-by-step explanation:

2,400 ÷ 8 = 300

300 × 5 = 1,500

Step-by-step explanation:

Here, in number lines the fraction are,

A = -4/6 = -2/3

B = -3/6 = -1/2

C = 1/6

D = 5/6

Answer:

B. 180

Step-by-step explanation:

Answer: $4603.82

Step-by-step explanation:

Given

The initial cost of a car is [tex]P=\$20,000[/tex]

The rate of depreciation is [tex]i=12.5\%[/tex]

Depreciated value after n years is given by

[tex]\Rightarrow P(1-\frac{i}{100})^n\quad \text{where n=no. of years}[/tex]

Value after 11 years

[tex]\Rightarrow 20,000(1-\frac{12.5}{100})^{11}\\\\\Rightarrow 20000(0.875)^{11}=\$4603.82[/tex]

Answer: 4h

Step-by-step explanation:

Answer:

2³ * 2² = 2³⁺² = 3⁵

Step-by-step explanation:

2³ * 2² = 2³⁺² = 3⁵

[(2³)² = 2³ˣ² = 3⁶]

Answer: 8 1/4 miles

Step-by-step explanation:

I think your question isn't well written and should be:

Nathan jogged 2 1/4 miles on Monday. On Wednesday, he jogged 3 1/3 miles and on Friday, he jogged 2 2/3 miles. How far did Nathan jog altogether?

This will be:

= 2 1/4 + 3 1/3 + 2 2/3

= 2 3/12 + 3 4/12 + 2 8/12

= 7 15/12

= 7 + 1 3/12

= 8 3/12

= 8 1/4 miles