Please someone help me out!!!!! Bill is bying a pair of jeans that costs $20. He has to pay 5% sales tax. How much will he pay in all?

Usando un sistema de ecuaciones vamos a ver que entran 24 libros de letras en el estante.

Vamos a usar las variables:

Por el texto, podemos saber que el peso maximo que tolera el estante esta dado por el sistema de ecuaciones.

30*x + 6*y = P

10*x + 18*y = P

Podemos igualar esas dos ecuaciones para obtener:

30x + 6y = 10x + 18y

30x - 10x = 18y - 6y

20x = 12y

x = (12/20)*y

Ahora, podemos reemplazar esto en una de las dos ecuaciones, por ejemplo la primera:

30x + 6y = P

30*(12/20)y + 6y = P

(3/2)*12*y + 6y = P

18y + 6y = P

24y = P

Así concluimos que entran 24 libros de letras en el estante.

Sí quieres aprender más sobre sistemas de ecuaciones, puedes leer:

https://brainly.com/question/20868687

Answer:Scientific notation is a way of expressing real numbers that are too large or too small to be conveniently written in decimal form

Step-by-step explanation:

Answer:

9-2 is7

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

1.) Let's substitute 4 for [tex]S[/tex].
[tex]9 - \frac{8}{S}[/tex]
[tex]= 9 - \frac{8}{4}[/tex]
[tex]= 9 - 2[/tex]
[tex]= 7[/tex]

Answer:

4

Step-by-step explanation:

How many yards in 12 feet?

                                                                         1 yd

Multiply 12 feet by the conversion factor  ---------------   obtaining   4 yd

                                                                         3 ft

Answer:

84.2118

Step-by-step explanation:

34.982 + 45.8 + 3.4298=84.2118

Answer:

First, we have to find the LCM of 12 and 8 which would be 24. Since we have to multiply 8 by 3, and 12 by 2, then the shortest height would be two 12-inch boxes, and three 8-inch boxes.

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIEST I REALLY WANT TO LEVEL UP

Answer:

-1/4

Step-by-step explanation:

We use the formula:

[tex] \frac{y₂ -y₁}{x₂ -x₁} [/tex]

plugging in we have

[tex]\frac{ (- 1)-(1)}{(6) -( - 2)} = \frac{ - 2}{8} = - \frac{1}{4} [/tex]

Therefore our slope is -1/4

Answer:

2 1/2

Step-by-step explanation:

An arithmetic sequence is found when you subtract consecutive terms. The difference is always 3/8 between the terms.

Answer:

13.4445 I think.

Step-by-step explanation:

Answer:

[tex]3(x - 5)[/tex]

Step-by-step explanation:

[tex]3(x - 5) =( 3)(x) + (3)( - 5) = 3x - 15 \\ \\ 3(x + 5) = (3)(x) + (3)(5) = 3x + 15 \\ \\ 3x( - 15) = (3x)( - 15) = - 45x[/tex]

Answer:

-8

Step-by-step explanation:

when there are two negetive numbers you add them not subtract

Answer:

1 =125

2=55

3=95

...........

Answer:

1/3

Step By Step Explanation:

He has sent 4/12 packages which is reduced to 2/6 which is reduced to 1/3.

Answer:

1/4

Step-by-step explanation:

Hope this Helps!

Answer: no

I would not flip the inequality symbol

Answer:

I think fractions are smaller than whole numbers

So I think No (viewpoint)

Answer:

2.92%

Step-by-step explanation:

Answer:

no solutions exist

Step-by-step explanation:

You can rewrite the denominator as:

-2(2x-6) so the equation becomes:

[tex]-\frac12 \cdot \frac{2x-6}{2x-6} > 0[/tex]

from which you can see that not only should x ≠ 3, but for all values of x≠3 the equation is false.

At x = 1000 we get the c(1000) = 2000,000. Second statement 'one thousand units have the maximum cost of $200,000' is true.

It is given that the function [tex]\rm c(x)=400x-0.2x^2[/tex] represents the total costs for a company to produce a product, where c is the total cost in dollars and x is the number of units sold.

It is required to find which statement is true, mentioned in the question.

Maxima and minima of a function are the extrema within the range, in other words, the maximum value of a function at a certain point is called maxima and the minimum value of a function at a certain point is called minima.

We have a function:

[tex]\rm c(x)=400x-0.2x^2[/tex]

To find the maxima and minima of any function we differentiate the function with respect to [tex]\rm x[/tex] and equate to zero.

[tex]\rm \frac{d \ c(x)}{dx} =\frac{d}{dx} (400x-0.2x^2)[/tex]

[tex]\rm \frac{d \ c(x)}{dx} =\frac{d}{dx} (400x)-\frac{d}{dx} (0.2x^2)\\\rm \frac{d \ c(x)}{dx} =400-(0.2\times2x)\\\rm \frac{d \ c(x)}{dx} =400-0.4x[/tex]

For maxima and minima [tex]\rm \frac{d \ c(x)}{dx} =0[/tex]

[tex]\rm 400-0.4x=0\\\rm x=\frac{400}{0.4} \\\rm x=1000[/tex]

If we find the seconnd differentiate, we get

c''(x) = -0.4 < 0

It means at x = 1000 we will get the maximum value of a function.

[tex]\\\\\rm c(1000) = 400(1000) - 0.2(1000)^2\\\rm c(1000)= 200,000[/tex]

Thus, at x = 1000 we get the c(1000) = 2000,000. Second statement is true.

Know more about the maxima and minima here:

https://brainly.com/question/6422517

Answer:

B

Step-by-step explanation:

To determine the maxima and minima of the polynomial, differentiate the given based on x and equate to 0.                                   C(x) = 400x - 0.2x²                               dC(x) / dt = 400 - 0.4 x = 0 The value of x is 1000. This is the value of the maxima. As the value of C(x) continously becomes lesser as the value of x is set higher, the minima is not identified. Substitute x to the original equation,                               C(x) = (400)(1000) - 0.2(1000²) = $ 200,000Thus, the answer is letter B. 

Answer:

264

Step-by-step explanation:

Answer: The Least Common Multiple (LCM) for 3, 8 and 11, notation LCM (3,8,11), is 264 Solution by using the division method This method consists of grouping by separating the numbers that will be decomposed on the right side by commas while on the left side we put the prime numbers that divide any of the numbers on the right side.

Answer:

C.)0.65($1250)

D.)$1250 – 0.35($1250)

Step-by-step explanation:

O.P (Original Price) $1250

Dc (Discount) 35%  -  *ALL MERCHANDISE*

Question:

Which expressions can be used to find the discounted price of the sound system?

Second Answer:

C & D are the two options that fit the

O.P (Original Price)

&

Dc (Discount)

Answer:

C and D

Step-by-step explanation:

I hope it helped you!!

Oof

Answer:

20x

Step-by-step explanation:

First of all, we need to always do the x first. And then subtract it I guess.

25x + (5x – 10)

30x-10

20x

Answer:

(3,-5)

Step-by-step explanation:

4+1=5 put it on negative side makes it -5.

Answer:

4x²y* (-6xy²)= -24x³y³

Answer:

15,17,19,21,23

Step-by-step explanation:

Enjoy You All!

Answer:

[tex]x>5[/tex]

Step-by-step explanation:

[tex]\frac{x}{25}>5\\\\25(\frac{x}{25})>25(5)\\\\\frac{x}{1}>125\\\\x>125\\\\\underline{x>5}\Longleftarrow\:Answer[/tex]

Answer:

C C C C C.....is a function

Answer:

38+37i

Step-by-step explanation:

Answer:

Gross Domestic Product (GDP) includes all final goods and services produced within a country, in a specific period and doesn't necessarily include all the transactions that are going in the economy.

For example: Used domestic car buying or selling won't be counted for the GDP of current year, as it was manufactured and sold in 2000.\]Step-by-step explanation:

Let's check one by one

#1

False

#2

True

#3

True

#4

False

Answer:

77.4 degrees and 12.6 degrees

Step-by-step explanation:

Let the angles be x and x - 64.8.

Therefore, on the basis of knowledge that complementary angles add up to 90 degrees :

x + x - 64.8 = 90

2x = 154.8

x =  77.4 degrees

x - 64.8 = 77.4 - 64.8 = 12.6 degrees