The solution to the system of equations below is (x, y). What is the value of x?

3x + y = 13

2x - 4y = 18

Answer:

Step-by-step explanation:

The lateral surface area of the pyramid can be found using the formula for the area of an equilateral triangle:

A = (s^2 * √3) / 4

where s is the length of one side of the equilateral triangle base.

For this pyramid, s = 50 feet

A = (50^2 * √3) / 4 = (2500 * √3) / 4 = 1250 * √3 ≈ 2129.28 ft^2

The total surface area of the pyramid can be found by adding the area of the base to the area of the lateral surface:

A = base area + lateral surface area

A = (side length^2 * √3) / 4 + (3 * triangle area)

A = (50^2 * √3) / 4 + (3 * (50^2 * √3) / 4)

A = 2500 * √3 + 3750 * √3 ≈ 5884.28 ft^2

To paint 75% of the pyramid, the painter needs to paint 75% * 5884.28 ft^2 = 4413.71 ft^2

Since the painter can paint 100 ft^2 in 18 minutes, he can paint 4413.71 ft^2 in 4413.71 / 100 * 18 minutes ≈ 786.96667 minutes

Rounding to the nearest tenth, the painter will take 786.967 minutes to paint 75% of the pyramid, which is approximately 13.1 hours.

Therefore , the solution of the given problem of fraction comes out to be Roman can thus perform 8 poster.

Any number of equal amounts or fractions can be used to represent a whole. In standard English, the quantity of a certain size is stated as a fraction. 8, 3/4. Wholes also include ratio. Numbers are represented in mathematics by the fraction to numerator ratio. These are all straightforward integer fractions. There is a fraction in the denominator of a difficult fraction. because the calculations, numerators, and numerators of actual fractions vary.

Here,

Given :

Roman divided a poster board sheet into ten equally sized pieces.

The entire sheet should be x.

then, one part of sheet=  1/1 0 of the sheet

Currently, only 8/10 of the poster is left after his brother used portion of it.

Roman can therefore use each remaining piece of the poster to create a sign if he so chooses.

The number of indications he is capable of making is then

=> 8/10/1/10

= > 8/10 * 10 = 8.

Roman can thus perform 8 signs.

Therefore , the solution of the given problem of fraction comes out to be

Roman can thus perform 8 poster.

To know more about fraction visit:

https://brainly.com/question/10354322

#SPJ1

The area of the top of the second mattress , 3/2x²

The equation to model the problem is y= 1.22x.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

let the side of mattress one be x

and, the side of Mattress 2 be y.

So, area of Mattress 2 / Area of Mattress 1 = 1 1/2

area of Mattress 2 / Area of Mattress 1 = 3/2

y²/ x² = 3/2

(y/ x)² = 3/2

y/x = √3/2

y /x = 1.22

Hence, the equation is y= 1.22 x .

Learn more about equation here:

https://brainly.com/question/29657992

#SPJ1

Answer:15

Step-by-step explanation:

i did the math

Answer:

15

Step-by-step explanation:

15 x 2=30

15x3=45

As a result, his monthly payment of $289.41 for a loan of $43,000 compounded monthly over 20 years at an APR of 2.4% will be required.

By dividing initial principal by the risk premium, the time it has been and other factors, simple interest is determined. Simple return equals principal plus interest plus hours is the technique used in marketing. The easiest way to compute interest is by using this method. The most typical method for calculating this is as a portion of the principal amount. For example, if he borrowed $100 from a buddy and agrees to pay back the loan at 5% interest, he will just pay his share of the 100% interest. $100 (0.05) = $5. When you borrow money, you must pay interest, and you must lend money when you lend it. Typically, interest is determined as an indicator of the overall of the loan total. The loan's interest is the name given to this percentage.

given

Assuming a specific interest rate (r), principal (p), and number of times the interest is compounded annually (n), we can calculate the total amount owed on a loan (A) as follows:

A = p(1+ r/n) nl

Because in our example, n = 12 (monthly), p = $43,000, r = 2.4% = = 0.024, and t = 20 years.

A = $69457.89.

$289.41 per month for a 20-year term.

As a result, his monthly payment of $289.41 for a loan of $43,000 compounded monthly over 20 years at an APR of 2.4% will be required.

To know more about interest rate visit:

https://brainly.com/question/28792777

#SPJ1

In the United States, 65% of cans are recycled.

A number or ratio that can be expressed as a fraction of 100 is called a percentage. Divide the number by its whole number and multiply it by 100 if we have to figure out the percentage of that number. Consequently, the percentage represents one part per hundred.

Given In the United States, 13 out of every 20  cans are recycled.

total cans = 20

recycled cans = 13

percent of recycled can = 100*recycled cans/total cans

percent of recycled can = 100*13/20

percent of recycled can = 60%

Hence 65% of cans are recycled.

Learn more about percent;

https://brainly.com/question/28840349

#SPJ1

Correct question is In the United States, 13 out of every 20 cans are recycled. What percent of cans are recycled?

After simplification, the value of expression is, (x + 1) / (2x - 1).

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

We have to given that;

The expression is,

⇒ 10x² + 10x / 20x² - 10x

Now, We can simplify as;

⇒ (10x² + 10x) / (20x² - 10x)

⇒ 10x (x + 1) / 10x (2x - 1)

⇒ (x + 1) / (2x - 1)

Thus, The value of expression is, (x + 1) / (2x - 1).

Learn more about the divide visit:

https://brainly.com/question/28119824

#SPJ1

The quadratic regression equation is y = 1.38x^2 - 5.77x + 0.96

From the question, we have the following parameters that can be used in our computation:

(-1,8), (5,-4), (7,8), (2,-6)

Using a graphing calculator, we have the following summary:

function value

mean of x 3.25

mean of y 1.5

correlation coefficient r 0.9990171837

A 1.380577428

B -5.769028871

C 0.9553805774

The equation is represented as

y = ax^2 + bx + c

So,, we habe

y = 1.38x^2 - 5.77x + 0.96

Hence, the equation is y = 1.38x^2 - 5.77x + 0.96

Read more about regression at

https://brainly.com/question/25987747

#SPJ1

Answer:

C

Step-by-step explanation:

The domain of the function 5h + 2d = 15 is [0, 3].

What is domain and range of a function?

The collection of values that can be plugged into a function's domain are called its parameters. The x values for a function like f are contained in this collection (x).

                           The collection of numbers that the function assumes is known as its range. The values that the function outputs when we enter an x value are in this set.

5h + 2d = 15

2d = 15 - 5h

d = (15 - 5h)/2

For h = 0, d = 15/2 = 7.5

For h = 1, d = (15 - 5)/2 = 10/2 = 5 miles.

For h = 2, d = (15 - 10)/2 = 5/2 = 2.5 miles.

For h = 3, d = (15 - 15)/2 = 0 miles

The domain of the function is [0, 3].

Thus,

The domain is [0, 3].

Learn more about domain

brainly.com/question/28135761

#SPJ1

Answer:

The water cycle involves the continuous movement of water on, above, and below the surface of the Earth. In the cycle, water can exist in three states: liquid, solid, and gas. During evaporation, liquid water changes into water vapor, the gaseous state of water, as it heats up and turns into steam. When water vapor cools, it can condense back into liquid form, such as when it forms clouds. Precipitation, such as rain or snow, occurs when water droplets in the clouds become heavy enough to fall from the sky. When precipitation reaches the ground, some of it may flow into rivers and streams and eventually make its way to the ocean. Some of it may also be taken up by plants or seep into the ground, becoming part of the groundwater system. Eventually, the water in the groundwater system may evaporate back into water vapor and start the cycle over again.

The number of populations that he needs to answer this question is the number of classes that he teaches.

Population: Collection or set of individuals or objects or events whose properties will be studied.

Sample: The sample is a subset of the population, and a well chosen sample, that is, a representative sample will contain most of the information about the population parameter. A representative sample means that all groups of the population are inserted into the sample.

Hence in this problem each population is the set of all students in each class, hence the number of populations that he needs to answer this question is the number of classes that he teaches.

More can be learned about population and sample at https://brainly.com/question/7301139

#SPJ1

The total area of all the pieces would be: -  x² + y² + 2xy = (x + y)².

This tile collection is composed of four tiles: two squares, each with sides of length x, and two rectangles, each with sides of length x and y.

The total area of all of the pieces can be expressed algebraically as A = x² + 2xy.

This expression can also be written as A = x² + xy + xy.

This tile collection is an example of a two-dimensional shape composed of two squares and two rectangles.

By adding the areas of each of these shapes, we can calculate the total area of the tile collection.

The area of each square is x², and the area of each rectangle is xy.

Adding these three expressions together gives us the total area, A = x² + 2xy.

To learn more about the total area visit:

brainly.com/question/28020161

#SPJ1

Mr. Lopez cover in sand by 50 yd².

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

We have to given that;

Mr. Lopez is looking to fill a part of a park with sand.

And, The shape below represents the part of the park being covered in sand.

Now, We will find the area of figure as;

The park is mix of two figure rectangle and triangle.

Hence, We get;

Area of rectangle = 5 × 8

                           = 40 yd²

And, Area of triangle = 1/2 × 4 × 5

                                 = 10 yd²

Thus, The area of given figure is,

⇒ Area = 40 yd² + 10 yd²

⇒ Area = 50 yd²

Learn more about the rectangle visit:

https://brainly.com/question/2607596

#SPJ1

The correct answer is A: 600 <= money <= 2822.4.

This represents the range of possible values that Pankaj's accumulated money could fall into, given the specified conditions of the 3% interest rate compounded weekly for a maximum of 2 years. The lower bound, 600, represents the initial deposit amount, while the upper bound, 2822.4, represents the maximum amount of money Pankaj could earn after 2 years, assuming that interest is compounded every week.

When B and C are the currencies of different nations, two Cs are worth 7.5 As. Five Bs are equivalent to one C, while three As are worth four Bs.

Its precise nature is understood to be the figure is probably smallest equivalent fraction. How to determine the simplest form. Look for shared factors in the median and excess. A fractional number can always be checked to discover if it is a prime number. A statement having two equal sides and an equal sign in the intermediate is referred to as a linear expression. Every variable's classes are listed in lowest to highest in the general form of any formula. The formula for a linear function is x + b = 0. The simplified version of a two-variable mathematical expression is an x + b y + c = 0. (or something similar). Either conditioned equations or identities provide categories for equations. An identity holds true because of whatever value of the variables.

given

The aforesaid issue is easily resolved by doing the following:

Considering that,

Four Bs are worth three As.

It can be written as;

3A = 4B

determining B's value

B = 3A/4 (Equation 1) (Equation 1)

Now,

A B is worth five Cs.

So, 5B = C (Equation 2) (Equation 2)

Calculating B's value in equation 1

= 15A/4 = C

= 4C = 15A

2C = (15/2)A

2C = 7.5A

Therefore, the solution is 2C = 7.5A

When B and C are the currencies of different nations, two Cs are worth 7.5 As. Five Bs are equivalent to one C, while three As are worth four Bs.

To know more about equation visit:

https://brainly.com/question/649785

#SPJ1

Answer:

x= - 52

Step-by-step explanation:

we need to multiply  both sides by 4 to leave the x alone

so

[tex]\frac{-x}{4} *4= 13*4\\-x= 52\\\frac{-x}{-1}=\frac{52}{-1}\\ x=-52[/tex]

The equation of the graph is y = -2/3x - 4

A linear equation is represented as

y = mx + c

Where

c = y when x = 0

From the graph, we have

c = -4

So, the equation becomes

y = mx - 4

From the graph, we have the following point

(-6, 0)

So, we have

0 = -6m - 4

Evaluate

m = -2/3

So, we have

y = -2/3x - 4

Hence, the equation is y = -2/3x - 4

Read more about linear equation at

https://brainly.com/question/2030026

#SPJ1

Answer:

y = 5x

where

y = number of fence posts that Edwin installs
x = number of hours that Edwin takes to install y posts

Step-by-step explanation:

Let y = number of fence posts that Edwin installs in x hours

We have the relation:

y ∝ x where ∝ is the symbol for is-proportional-to

We can rewrite this as an equation using the constant of proportionality,k:

y =kx

Given y = 40 fences, x = 8 hours we get

40 = k(8) = 8k

or, switching sides

8k = 40

k = 40/8 = 5

So Edwin can install 5 fences per hour

Plugging this into the equation of proportionality

y = 5x

Answer:

13

Step-by-step explanation:

Len n = number.

9n = 2n + 91

7n = 91

n = 13

Answer: 13

Answer:

1st number linline

Step by step explanation:

x < -3 means x is less than -3

so it should be any number less than -3

In the 2nd number line represents

[tex]x \leqslant - 3[/tex]

so the answer is 1st one

Answer:

1225 is what I got, not sure tho.

The solution satisfying y1(0)=14 and y2(0)=-3 are y1(t) = 14 * e^(tln(14/13)) / (1 + (14/13)e^(tln(14/13))) and y2(t) = -3 * e^(tln(-3/2)) / (1 + (-3/2)e^(tln(-3/2)))

The logistic equation is a non-linear ordinary differential equation that models the growth of populations over time.

The solution to the logistic equation with initial conditions y1(0)=14 and y2(0)=-3 is given by (from a graphing tool):

y1(t) = 14 * e^(tln(14/13)) / (1 + (14/13)e^(tln(14/13)))

y2(t) = -3 * e^(tln(-3/2)) / (1 + (-3/2)e^(tln(-3/2)))

Note: ln is the natural logarithm function.

The time t when y1(t)=7 can be found by solving for t in the equation y1(t) = 7.

From the graphing tool, we have

t = 1.08 when y1(t) = 7

he solution y2(t) becomes infinite when the denominator of the equation becomes zero.

This occurs when -3/2 * e^(t * ln(-3/2)) = -∞.

This can be written as t * ln(-3/2) = ∞, which occurs when t approaches positive infinity.

Read more about logistic equation at

https://brainly.com/question/10709685

#SPJ1

Using the properties of sets, (BU A)'n C = {h,q}

Null set or an empty set There isn't even one element in it. Finite Set: It only has a finite number of components. The element count of an infinite set is infinite. Two sets with the same members are said to be equal sets.

An object collection that is taken into account as a whole is referred to as a set. The elements or members of the set are the things that make it up. A set's components can be any type of object, but for our purposes, they are most frequently mathematical components like integers, functions, or other sets.

The list of all subsets of a,b,c,d is ϕ ,{a},{b},{c},{d},{a,b},{a,c},{a,d},{b,c},{b,d},{c,d},{a,b,c},{a,b,d},{a,c,d},{b,c,d},{a,b,c,d}

(B U A) = {f,g,r,x,y,z}

(BU A)'n C = {h,q}

To know more about sets visit:-

https://brainly.com/question/13458417

#SPJ1

Using the concept of multiplication and division, the number of chocolate sold each month is 400 packs.

To determine the number of chocolate biscuits in the shop, we have to determine how many is contained in each box and then multiply it by number of days in a month and then subtract the number of chocolate in the shop. This tasks involves the use of basic arithmetic operations to determine the number of packs sold.

The total number of packs of biscuits in the shop was 160 * 30 = 4800.

So, the number of packs of chocolate biscuits was 4800 - 2800 = 2000.

The shopkeeper sold 2000 packs of chocolate biscuits over 5 months, so he sold 2000 / 5 which will give us 400 packs of chocolate biscuits each month.

Learn more on arithmetic operations here;

https://brainly.com/question/550188

#SPJ1

The dimensions of the rectangular field are given as follows:

The perimeter of a rectangle is given by twice the sum of the length and the width of the rectangle, as follows:

P = 2(l + w).

For this problem, the perimeter is of 582 yards, hence:

2(l + w) = 582

l + w = 291.

The length of the field is 4 yards less than quadruple the width, hence:

l = 4w - 4.

Then the width is obtained as follows:

4w - 4 + w = 295

5w = 295

w = 295/5

w = 59.

The length is obtained as follows:

l = 4 x 59 - 4

l = 232 yards.

More can be learned about the perimeter of a rectangle at https://brainly.com/question/24571594

#SPJ1

By the given explanation it is proven that ∠1 and ∠3 are supplementary from this, it has proven the Consecutive Interior Angles theorem.

According to the consecutive interior angle, if a transversal intersects two parallel lines each pair of consecutive interior angles is supplementary, meaning that the sum of the consecutive interior angles equals 180°  

Here we have

Line p and line q are two parallel lines and line 't' is a transversal on Line p and line q  

Theorem:

When a transversal intersects two parallel lines, each pair of consecutive interior angles is supplementary i.e added up to 180°.  

We can prove the above theorem as follows

Given p║q  

Let's take angles 4 and 5 on line 'p' as shown below

Here ∠4 + ∠3 = 180°     [∵  pair of linear angle ]    

Now substitute ∠1 in place of ∠4  

=> ∠1 + ∠3 = 180°     [ ∵ Corresponding angles ∠1 and ∠4 are equal ]  

Therefore,

By the given explanation it is proven that ∠1 and ∠3 are supplementary from this, it has proven the Consecutive Interior Angles theorem.

Learn more about The transversals at

https://brainly.com/question/17987539

#SPJ1