Which situation is best represented by the following equation?

45w+123.95=753.95
A.Erica paid $753.95 for dance classes. She paid $123.95 for each week she was enrolled in the classes after using a coupon that gave her $45 off the price per week. What is w,the number of weeks Erica was enrolled in dance classes?

B.Erica paid $753.95 for dance classes. She paid a $123.95 registration fee and $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes?

C.Erica paid $753.95 for dance classes. She paid a $45 registration fee and $123.95 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes?

D.Erica and her sister paid $753.95 for dance classes. Erica paid $123.95 for each week she was enrolled in the classes, and her sister paid $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica and her sister were enrolled in dance classes?

Answer:

See below :)

Step-by-step explanation:

We know that these traingles are all similar. We can see the angle NMK is 60 degrees so we also know that JNK is 60 degrees. Now we know that all of the triangles are 30-60-90 triangles. JN is 3, so from the "leg opposite to 30 degree theorem", we know that NK is two times JN which is 6. Then from the same theorem, we know that NM is NK divided by the square root of 3

[tex]\frac{6}{\sqrt3}[/tex]

We can't have fractions that have irrational numbers in the denominator of a fraction so we multiply it by root3 over root3

[tex]\frac{6}{\sqrt3}[/tex] * [tex]\frac{\sqrt3}{\sqrt3}[/tex]

This then makes it 6 times root 3 over 3

[tex]\frac{6\sqrt3}{3}[/tex]

We then get [tex]2\sqrt{3}[/tex]

Answer:

2(3-n)=5

Step-by-step explanation:

Answer:

65/100 pounds

Step-by-step explanation:

P.S Can I have brainliest?

Answer:

13/20

Step-by-step explanation:

Write 0.65 as [tex]\frac{0.65}{1}[/tex]

Multiply both numerator and denominator by 10 for every number after the decimal point

0.65 × 100/1 × 100 =  [tex]\frac{65}{100}[/tex]

[tex]\frac{65}{100}[/tex] reduced is 13/20

Answer:

J=17 N=20 R=15

Step-by-step explanation:

J=Jane

R=Ruby

N=Nora

J=2R-13

N=5+R

J+N+R=52

(2R-13)+(5+R)+R=52

Slove for R and plug into each equation

Answer:

Ruby is 15, Jane is 17 and Nora is 20.

Step-by-step explanation:

Let x represent the age of Ruby.

Jane: 2x - 13

Ruby: x

Nora: x + 5

52 = (x) + (2x - 13) + (x + 5)

52 = x + 2x - 13 + x + 5

52 + 13 - 5 = x + 2x + x

60 = 4x

x = 15

Jane:

2(15) -13

= 17

Nora:

(15) + 5

= 20

Answer:

20 %

Step-by-step explanation:

15% of 20 is 3, and 3 is 20% of 15

Answer:

the answer pls and ty

15.

[tex]( {4}^{4} ) {}^{3} [/tex]

[tex] = {4}^{4 \times 3} [/tex]

[tex] = {4}^{12} [/tex]

[tex] = 16777216[/tex]

___________________________________________

16.

[tex] \frac{ {3}^{12} }{ {3}^{3} } [/tex]

[tex] = {3}^{12 - 3} [/tex]

[tex] = {3}^{9} [/tex]

[tex] = 19683[/tex]

___________________________________________

17.

[tex] {4}^{5} \times {4}^{2} [/tex]

[tex] = {4}^{(5 + 2)} [/tex]

[tex] = {4}^{7} [/tex]

[tex] = 16384[/tex]

___________________________________________

18.

[tex] {6}^{4} \times {2}^{4} [/tex]

[tex] = ({6 \times 2})^{4} [/tex]

[tex] = {12}^{4} [/tex]

[tex] = 20736[/tex]

The system random sampling involves the introduction of a sampling interval during the sampling process. Hence, the use of a fixed interval is more likely to miss the potential defect noticed based on the sampling interval selected.

Therefore, with simple random sampling, Sergio stands a better chance of capturing the defect better than using systematic random sampling

Learn more : https://brainly.com/question/8165716

Answer:

If the defect is in every other cake, a systematic random sample could miss it completely depending on what Sergio chooses for kkk.

Step-by-step explanation:

got right on kahn

Answer:

y=mx+b is the slope intercept form.

Step-by-step explanation:

m is the slope (how the line is moving across the graph)

b is y-intercept (where the line crosses the y axis)

Hope this helps!

Answer:

4 and 7

Step-by-step explanation:

There are probably several ways to do this but this is how I did it:

First, I listed all the number combinations, that added together equaled 11.

This is what it looked like:

1, 10

2, 9

3, 8

4, 7

5, 6

6, 5

7, 4

I stopped here since the next step would be to double the first number and 8*2 would already be more than 15.

Then, I doubled the first number and added the second number to it, when I saw that didn't equal 15, I eliminated that possibility and moved on to the next set of numbers. When I reached 4, 7 I saw that 4*2 equaled 8 and 8 plus 7 equals 15 so I had the answer.

There are probably much more efficient ways to do this but this is how I did it.

Hope it helped!

The first number is 4 and second number is 7.

Let us consider that first number is x and second number is y.

            [tex]2x+y=15\\\\x+y=11[/tex]

Substitute [tex]y=11 - x[/tex]in equation [tex]2x+y=15[/tex]

        [tex]2x+11-x=15\\\\x=15-11=4[/tex]

So,   [tex]y=11-x=11-4=7[/tex]

Learn more:

https://brainly.com/question/2159099

Answer:

Line C

Step-by-step explanation:

I got it correct on my test on performance matters!!

Answer:

sure

Step-by-step explanation:

Answer:

i think it is 69 thank you

Answer:

factor of 36

Step-by-step explanation:

Given the factor 6, then the area factor is

6² = 36

Answer:

i think it might be the letter D

Answer:

how to do what? there is no question attached

Step-by-step explanation:

Answer:

4/8 in simplist for would be 1/2

Step-by-step explanation:

Answer:

61/82

Step-by-step explanation:

The answer is already reduced.

Answer:

61/82 its as low as possible

Step-by-step explanation:

I got it right

Answer:

$140

Step-by-step explanation:

Orignal Price: $200

200 x 0.3

= 60

200 - 60

= 140

Answer:the phone will cost 140

Step-by-step explanation:

Answer:

For me when I am finding the slope I actually use the slope formula [tex]\frac{y2-y1}{x2-x1}[/tex].

Step-by-step explanation:

Step 1 you have to find the x and y

Step 2: Use the slope formula

Step 3: Subtract y2 and y1 to get your answer

Step 4: Subtract x2 and x1 to get your answer

Step 4: If your answer is easy to divide  simplify it, if not leave it as it is

That's all I know

I hope this helps :)

Answer:

Choose two sets of data (x and y values).  Calculate the difference between the two y values.  Calculate the difference between the corresponding two x values.  Slope is the difference in y values / difference in x values.

Hope this Helps!

Answer:

X=11

Step-by-step explanation

[tex]5^{3+8} =5^{11}[/tex]=11

Answer:1 1/4

Step-by-step explanation: If it is 5/4 it makes one whole leaving an extra

Answer:

NOT a single ordered pair satisfies the equation.

Step-by-step explanation:

Given the equation

[tex]x^2+y^2=100[/tex]

Let us substitute all the given ordered pairs to find which ordered pair satisfies the equation.

For (0, -100)

[tex]x^2+y^2=100[/tex]

substitute x=0 and y=-100

[tex]0^2+\left(-100\right)^2=100[/tex]

[tex]10000=100[/tex]

FALSE

Thus, the ordered pair (0, -100) does NOT satisfy the equation.

For (10, -10)

[tex]x^2+y^2=100[/tex]

substitute x=10 and y=-10

[tex]10^2+\left(-10\right)^2=100[/tex]

[tex]200=100[/tex]

FALSE

Thus, the ordered pair (10, -10) does NOT satisfy the equation.

For (25, 75)

[tex]x^2+y^2=100[/tex]

substitute x=25 and y=75

[tex]25^2+\left(75\right)^2=100[/tex]

[tex]6250=100[/tex]

FALSE

Thus, the ordered pair (25, 75) does NOT satisfy the equation.

Therefore, NOT a single ordered pair satisfies the equation.

Answer:

3780

Step-by-step explanation: