Devi bought 7 skits at $x each, n skirts at $12 each, (2n+1) skirts at $15 each and 4 skirts at $3x each. find the total costs of the skirts she bought.

(pls give step by step answers!!)

Answer:

.624

Step-by-step explanation:

Hope this helps.

Answer: 0.624

Step-by-step explanation:

To compute the magnitude we calculate it. The magnitude of the complex numbers are (a) √2, (b) √2, (c) 2, (d) √2/2, and (e) 1.

(a) The magnitude of 1+i is √(1^2 + 1^2) = √2.

(b) The magnitude of 1-i is √(1^2 + (-1)^2) = √2.

(c) To compute the magnitude of (1+i)/(1-i), we can simplify the expression first:

(1+i)/(1-i) = [(1+i)(1+i)] / [(1-i)(1+i)] = (1 + 2i + i^2) / (1 - i + i - i^2) = (1 + 2i - 1) / (1 - 1) = 2i.

The magnitude of 2i is √(0^2 + 2^2) = √4 = 2.

(d) To compute the magnitude of (3+i4)/(1+i), we can simplify the expression first:

(3+i4)/(1+i) = [(3+i4)(1-i)] / [(1+i)(1-i)] = (3 - 3i + 4i + 4i^2) / (1 - i + i - i^2) = (3 + i - 4) / (1 + 1) = (-1 + i) / 2.

The magnitude of (-1+i)/2 is √((-1/2)^2 + (1/2)^2) = √(1/4 + 1/4) = √(2/4) = √(1/2) = 1/√2 = √2/2.

(e) To compute the magnitude of 3e^(iπ), we can use Euler's formula, which states that e^(ix) = cos(x) + i*sin(x).

Here, x = π, so e^(iπ) = cos(π) + i*sin(π) = -1 + 0i = -1.

The magnitude of -1 is √((-1)^2 + 0^2) = √1 = 1.

Learn more about Euler's formula here:
brainly.com/question/12274716

#SPJ11

Answer:

where's the height?

Answer:

what is the answer i want to know i think its D

Using the combination formula, there are 35 different ways you can select 3 videos to watch out of the 7 videos you have selected.

To calculate the number of different ways you can select 3 videos to watch out of the 7 videos you have selected, you can use the combination formula.

The combination formula, also known as "n choose k," calculates the number of ways to choose k items from a set of n items, without regard to the order of selection. It is given by the formula:

\(C(n, k) = \frac{n!}{ (k! * (n - k)!)}\)

where n! denotes the factorial of n.

In this case, you want to select 3 videos out of the 7 videos you have. Therefore, you can use the combination formula as follows:

\(C(7, 3) = \frac{7! }{(3! * (7 - 3)!)}\)

\(C(7, 3) = \frac{7!}{ (3! * 4!)}\)

Simplifying further:

\(C(7, 3) = (7 * 6 * 5 * 4!) / (3! * 4!)\)

The 4! terms in the numerator and denominator cancel out:

\(C(7, 3) = \frac{(7 * 6 * 5) }{ (3 * 2 * 1)}\)

C(7, 3) = 35

Therefore, using the combination formula, there are 35 different ways you can select 3 videos to watch out of the 7 videos you have selected.

Learn more about combination formula here:

https://brainly.com/question/13090387

#SPJ11

Answer:

the x axis changes

Step-by-step explanation:

Answer:

p = (200 + 7.5t) psi

Step-by-step explanation:

The initial pressure inside a closed container is 200 psi. Since the container is closed, the pressure inside it can not be less than 200 psi.

The pressure increases 7.5 psi with a degree rise in temperature (t) = 7.5t

so that;

p = 200 + 7.5t

  = (200 + 7.5t) psi

If the temperature increases by \(1^{o}\) F, then;

p = 200 + 7.5(1)

  = 200 + 7.5

  = 207.5 psi

If the temperature increases by \(10^{o}\) F, then;

p = 200 + 7.5(10)

  = 200 + 75

  = 275 psi

Answer:

Number of students in each van = 18

Number of students in each bus = 53

Step-by-step explanation:

Given: The senior class at High School A rented and filled 2 vans  and 7 buses with 407 students.

High School B rented and filled 1 van and 7 buses with  389 students.

Also, every van and the van had the same number of students in it.

Solution:

Let x denotes number of students in each van and y denotes number of students in each bus.

According to the given information,

\(2x+7y=407\,\,\,(i)\\x+7y=389\,\,\, (ii)\)

From (ii), put \(x=389-7y\) in (i)

\(2(389-7y)+7y=407\)

\(778-14y+7y=407\\778-407=7y\\7y=371\\y=\frac{371}{7}=53\)

Put \(y=53\) in \(x=389-7y\)

\(x=389-7(53)\\=389-371\\=18\)

Number of students in each van = 18

Number of students in each bus = 53

If there is orange with a volume of 113.1 cm3, the area of the cross-section when the orange is cut in half is approximately 34.9 sq cm.

If we assume that the orange is a sphere and has a volume of 113.1 cm3, we can use the formula for the volume of a sphere to find the radius of the orange. The formula for the volume of a sphere is V = (4/3) * pi * r^3, where r is the radius of the sphere.

Substituting the given volume of 113.1 cm3 and solving for the radius r, we find that r = (3V / (4 * pi))^(1/3) = (3 * 113.1 / (4 * pi))^(1/3) approximately 3.3 cm.

Next, we can use the formula for the surface area of a sphere to find the area of the cross-section when the orange is cut in half. The formula for the surface area of a sphere is A = 4 * pi * r^2, where r is the radius of the sphere. Substituting the value of the radius that we calculated above, we find that the area of the cross-section is A = 4 * pi * (3.3 cm)^2 approximately 34.9 sq cm.

To know more about Area

https://brainly.com/question/11952845

#SPJ4

Answer:

\(11\dfrac{3}{5}$ miles\)

Step-by-step explanation:

Miguel ran \(2\dfrac{9}{10}\) miles on Monday.

On Friday, he ran 5 times as far as he did on Monday.

Miles run on Friday

\(=5 X 2\dfrac{9}{10}\)

\(=5 X \dfrac{29}{10}\\=\dfrac{29}{2}$ miles\)

Difference in Number of Miles Run

\(=\dfrac{29}{2}-\dfrac{29}{10}\\=\dfrac{145-29}{10}\\=\dfrac{116}{10}\\=11\dfrac{3}{5}$ miles\)

Therefore, Miguel ran \(11\dfrac{3}{5}$ miles\) farther on Friday.

The number of months it will take for both accounts to have the same amount of money is 250.50 - 35m = 300 - 45.25m, which can be found using the equation.

Let  m be the  number of months.

It is given that:

The international Business club starts with $ 250.50 in their account.

and each month they spent $ 35 on activities.

This means that after m months the total amount left in the bank account is:

250.20-35 m

The future agriculture leaders club start with a amount of $ 300 and spent $ 45.25 each month.

This means that the amount left in the account after m months is:

300-45.25m

Now, the equation that represents same amount of money in both the accounts is:

250.50-35m=300-42.25m

To learn more about amount  visit:https://brainly.com/question/13024617

#SPJ4

Answer:

graph d

Step-by-step explanation:

The expression that represents the power of a product property is a^m * a^n = a^(m + n)

This power of a product property states that when two powers that have the same base are multiplied, the exponents of the bases are added

The statement is given as

The power of a product property

The definition above implies that the representation of the power of a product property is

x^m * x^n = x^(m + n)

Using the above as a guide, we have

a^m * a^n = a^(m + n) -- option (d)

Hence, the expression that represents the power of a product property is a^m * a^n = a^(m + n)

Read more about expression at

https://brainly.com/question/12470265

#SPJ1

Answer: 1,900

Step-by-step explanation:

You would round up to 1,900 because in the tens place is a 6 and when you have a number greater than or equal to 5 you round up. Hope this helps!

The outcome of a simulation experiment is a probability distribution for one or more output measures.

Simulation experiments involve using computer models to imitate real-world processes and study their behavior. The output measures are the results generated by the simulation, and their probability distribution is a statistical representation of the likelihood of obtaining a particular result. This information is useful in decision-making, as it allows analysts to assess the potential impact of different scenarios and identify the most favorable outcome. To determine the probability distribution, the simulation is run multiple times with varying input values, and the resulting outputs are analyzed and plotted. The shape of the distribution indicates the degree of uncertainty associated with the outcome.

The probability distribution obtained from a simulation experiment provides valuable information about the likelihood of different outcomes and helps decision-makers make informed choices.

To know more about Probability Distribution visit:

https://brainly.com/question/15930185

#SPJ11

Answer:

R90

Step-by-step explanation:

120 hats sold and each = $0.50

0.50 × 120 = R60 (all the baseball hats cost)

50% of 0.50 = 0.25

0.25 × 120 = 30 (markup price)

60 + 30 = 90 ( total received for the sales)

When something decreases by 15.7%, the growth factor is about 1.182 and when something decreases by 0.12%, the growth factor is about 1.00012.

In math, what is the definition of multiplying?

Multiplication is a mathematical process that shows the amount of times a number has been added to itself. It is represented by the multiplication symbols (x) or (*). Division is a mathematical process that shows how many equal amounts add up to a given quantity.

If something decreases by 15.7%, the increase in the factor is 100 / (100 - 15.7) Equals 1.182.

As a result, when something decreases by 15.7%, the growth factor is about 1.182.

When something falls by 0.12%, the expansion factor is 100 / (100 - 0.12) = 1.00012.

As a result, when something decreases by 0.12%, the growth factor is about 1.00012.

To know more about Multiplying visit:

brainly.com/question/23536361

#SPJ1

Answer:

15 (D)

Step-by-step explanation:

There are 3 15s

it comes up the most

Answer:

Explanation:

15 is the mode because it is shown many times.

The given theorem states that if the product of two real numbers, x and y, is greater than 1/2, then the sum of their squares, x^2 + y^2, is greater than 1 which can be proved if xy > 1/2, then x^2 + y^2 > 1.

To prove the theorem by contradiction, we assume that x^2 + y^2 ≤ 1. We want to show that this leads to a contradiction and therefore cannot be true.

Since (x-y)^2 ≥ 0 for any real numbers x and y, we can expand the square as follows:

(x-y)^2 = x^2 - 2xy + y^2 ≥ 0.

Rearranging the terms, we have:

x^2 + y^2 ≥ 2xy.

Now, let's focus on the assumption given in the theorem: xy > 1/2. Multiplying both sides of this inequality by 2 gives:

2xy > 1.

Combining this with the previous inequality, we have:

x^2 + y^2 ≥ 2xy > 1.

This contradicts the initial assumption that x^2 + y^2 ≤ 1. Therefore, our assumption must be false, and the theorem holds true.

Hence, if xy > 1/2, then x^2 + y^2 > 1. The proof is complete.

Learn more about theorem here : brainly.com/question/32715496

#SPJ11

Answer:

let x equal the service charge.

let y equal the per hour charge.

for the job that cost 450, the equation is 450 = x + 6y

for the job that cost 330, the equation is 330 = x + 4y

these two equations needs to be solved simultaneously.

subtract the second equation from the firs to get 120 = 2y

solve for y to get y = 60.

in the first equation, replace y with 60 to get 450 = x + 6*60.

simplify to get 450 = x + 360.

subtract 360 from both sides of the equation to get 90 = x.

it appears that the service charge is equal to 90 and the per hour charge is equal to 60.

for the job that cost 450, the equation becomes 450 = 90 + 6*60 = 90 + 360 = 450.

for the job that cost 330, the equation becomes 330 = 90 + 4*60 = 90 + 240 = 330.

the numbers check out.

the service charge is 90.

the per hour charge is 60.

i believe your solution is that the electrician charges a flat fee of 90 plus an hourly fee of 60 for a service call.

Step-by-step explanation:

Answer:

x=5 2/11

Step-by-step explanation:

its either 5 2/11 or 57/11

Angles in 59 non-similar triangles having degree measures that are integers via arithmetic progression.

Let the summation of the angle values be: Using arithmetic progression & triangle knowledge, letting the sum of the angle values be:

∑degree = 180

For an odd arithmetic progression with a strange number of words, the median term is equivalent to the average of both the sum of all terms:

An arithmetic sequence's nth term,

Let the initial triangle angle =a

Let d be a common difference.

Because the angles' measurements follow an arithmetic progression \(T_{n}\) = a + (n - 1) × d

a + (a + d) + (a + 2d) = 180

3a+3d=180

a+d=60

Because an or d cannot be identical to zero, the minimum and maximum possible values for a and d are 1 and 59, respectively.

As a result, there are 59 distinct triangles.

Learn more about the arithmetic progression at

https://brainly.com/question/16966343?referrer=searchResults

#SPJ4

Answer:

Total flour used = 3 1/6 c

Step-by-step explanation:

Whole wheat flour = 1 1/2 c

Buckwheat flour = 1 2/3 c

How much flour did he use in all?

Total flour used = Whole wheat flour + buckwheat flour

= 1 1/2 c + 1 2/3 c

= 3/2 c + 5/3 c

= (9c + 10c) / 6

= 19c/6

= 3 1/6 c

Total flour used = 3 1/6 c

Answer:

I got you

Step-by-step explanation:

they would like bass boosted music and music with deep meaning

Step-by-step explanation:

9 x 4=36 is the answer

hope this helps you

have a nice day:)

Answer:

inverse is opposite so i assume its y and x

Step-by-step explanation:

The surface area of the square base pyramid is 1425 inches².

The surface area of the square base pyramid can be found as follows:

surface area of square base pyramid = a² + 2al

where

Therefore,

a = 19 inches

l = 28 inches

Therefore,

surface area of square base pyramid = 19² + 2 × 19 × 28

surface area of square base pyramid = 361 + 1064

surface area of square base pyramid = 1425 inches²

learn more on pyramid here: https://brainly.com/question/32228774

#SPJ1

Answer and Step-by-step explanation:

The answer is 1.

When g(x) is 0, we need to add 4 to both sides, then divide each side by 4 to get the x by itself. We see that x is equal to 1.

0 = 4x - 4

4 = 4x

x = 1

#teamtrees #PAW (Plant And Water)