At​ noon, a tank contained 20 cm of water. After several​ hours, it contained 16 cm of water. What is the percent decrease of water in the​ tank?

The number that belongs in the green box is 14.7. The solution has been obtained using law of sines.

What is law of sines?

According to the law of sines, all of the angles in the problem must have an equal ratio between the sine of each angle and the length of the side opposite to that angle.

As per law of sines,

sin A/a =  sin B/b = sin C/c

In the figure, we are given two angles and we know that in a triangle sum of all angles is 180°.

Therefore,

125° + 32° + x = 180°

x= 23°

Let the side be 'a'

Using law of sines,

⇒sin 125°/a = sin 23°/7

⇒a sin 23° = 7sin 125°

⇒a = 7sin 125°/sin 23°    (Dividing both sides by sin 23°)

⇒a = 14.7

Hence, the number that belongs in the green box is 14.7.

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Paula will use 20 oz of sauce and 80 oz of cheese to make 5 pizzas.

We can use the rate of use of pizza sauce and cheese to determine how much of each ingredient Paula will use to make 5 pizzas.

From the information provided, we can see that for every 4 oz of sauce, Paula uses 16 oz of cheese. We can use this ratio to determine the amount of sauce and cheese used for any number of pizzas.

To make 5 pizzas, Paula will use 4 x 5 = 20 oz of sauce and 16 x 5 = 80 oz of cheese.

So, Paula will use 20 oz of sauce and 80 oz of cheese to make 5 pizzas.

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Answer:

The First food will save the most money

Step-by-step explanation:

150lb- $53

75lb- $336.75

The first one saves them quite a bit of money.

The graph of the system of equations can be seen in the image at the end, and the solution is (0.5, 1.5)

Here we want to show which graph shows the system of equations below:

y = 3x

y = x + 1

So the graph will have two linear equations, the first one:

y = 3x

Passes through the points (0, 0) and (1, 3) (check that by evaluating)

And the equation:

y = x + 1

Passes through (0, 1) and (1, 2)

Then the correct option is the first one, and the graph of the gis the one below.

There we can see that the solution is (0.5, 1.5)

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According to the algebraic expression she spend at each of the two stores:

= 90 in the gap

= 360 in the Forever 21

Any mathematical statement with variables, numbers, as well as an arithmetic operation in between them is called an expression or an algebraic expression. For instance, the expression 4m + 5 has the terms 4m and 5 as well as the variable m of the supplied expression, all of which are separated either by arithmetic sign +.

Tiffany went shopping at Forever 21 and The Gap.

She spent a total sum of $450 at the two stores.

the amount she spent at Forever 21 was four times as much as the amount she spent at The Gap.

SO,

The amount she spent in Forever 21  = y

The amount she spent in Gap  = 4x

4x + y = 450

5x + y = 450

= 450/5

= 90

She spent in the gap.

= 450- 90

= 360

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A graph which has a slope of negative three halves and a y-intercept of 3 include the following: C. graph of a line passing through the points 0 comma 3 and 2 comma 0.

In Mathematics, the y-intercept is also known as an initial value and the y-intercept of any graph such as a linear function, generally occur at the point where the value of "x" is equal to zero (x = 0).

From the information provided above, the slope and data points on this line include the following:

In Mathematics and Geometry, the slope of any straight line can be calculated by using this this mathematical equation (expression);

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Substituting the given points into the slope formula, we have the following;

Slope (m) = (0 - 3)/(2 - 0)

Slope (m) = -3/2

Therefore, the required equation based on a y-intercept of 3 is y = -3x/2 + 3.

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240 tiles are required to cover a wall of size 4m by 3m

Let l be the length of the wall and b be the breadth of the wall

Then, l = 4m and b = 3m

Area of the wall is given by,

Area = length × breadth

= 4 m x 3 m

= 12 m^{2}

Also given that area of one marble tile = 25 cm x 20 cm

= 500 cm^{2}

Converting the measure of area of one marble tile in metres

= 0.05 m2

[Since 1 m^{2} = 10000 cm^{2}]

Now,

Area of one marble tile is 0.05 m^{2}

Number of tiles required to cover the wall

= Area of wall/ Area of one marble tile

= 12/0.05

= 240 tiles

Therefore, 240 tiles are required to cover a wall of size 4m by 3m or area of 12 m²

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By using the diagram, each of the sentence should be completed as follows;

In Mathematics, the exterior angle theorem can be defined as a theorem which states that the measure of an exterior angle in a triangle is equal in magnitude to the sum of the measures of the two remote or opposite interior angles of that triangle.

By applying the exterior angle theorem, we can reasonably infer and logically deduce that the sum of the measure of both angle 2 and angle 3 in the given triangle is equal to the measure of angle 1 (∠1);

∠2 + ∠3 = ∠1

By applying the Linear Pair Postulate to the two angles formed at a point, we have the following:

∠1 + ∠4 = 180°

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The total cost of the items that Jacob bought will be 58.94.

A word problem in mathematics simply refers to a question that is written as a sentence or in some cases more than one sentence which requires an individual to use his or her mathematics knowledge to solve the real life scenario given.

In this case, Jacob goes to the storeto buy items for the week. At walmart hebuy bread for 2.99 milk for 4.50 a bushel of cilantro for .50 detergant for 13.99 nori for 2.99 a wrench for 5.99 toilet paper for 21.99 and sandwhich meat for 5.99.

The total cost will be:

= 2.99 + 4.50 + 0.50 + 13.99 + 2.99 + 5.99 + 21.99 + 5.99

= 58.94

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Complete question

Jacob goes to the storeto buy items for the week. At walmart hebuy bread for 2.99 milk for 4.50 a bushel of cilantro for .50 detergant for 13.99 nori for 2.99 a wrench for 5.99 toilet paper for 21.99 and sandwhich meat for 5.99. Calculate the total cost

The mirror image is (4, 46) is (4, -46)

The term mirror image is defined as it is like a reflection of it either because it is exactly the same or because it is the same but reversed.

Here we have given the point (4, 46) and here need to mirror image of the points.

The rule Mirror image of (x , y ) in the x - axis is written as  ( x , -y)

Here we have the value of x as 4 and the value of y as 46.

Here we also know that it is defined as a reflected duplication of the number that appears almost identical but is reversed in the direction perpendicular to the mirror surface.

When we apply the values on the formula then we get the mirror image as (4, -46).

Complete Question:

What is the mirror image of the coordinate (4, 46)?

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The median of the following set of data (39.8, 39.6, 39.2, 39.6 and 39.5) is 39.6.

Median is a number separating the higher half from the lower half of a data sample, population, or probability distribution.

The median of a finite list of numbers can be found by arranging all the observations from lowest value to highest value and picking the middle one (e.g., the median of {3, 3, 5, 9, 11} is 5.

The following set of data was given this question;

39.8, 39.6, 39.2, 39.6 and 39.5

We arrange these data as follows:

39.2, 39.5, 39.6, 39.6, 39.8

The middle number or median is 39.6

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Answer:

The updated mean after adding 43 to the data set is 41.

Step-by-step explanation:

In statistics, the median is a measure of central tendency that represents the middle value of a data set when it is arranged in ascending or descending order.

We know that the general formula for finding median,

If the total number of data points (n) is odd, the median is the value at the  [tex]\frac{n+1}{2}[/tex] th position.

If the total number of data points (n) is even, the median is the average of the values at the [tex]\frac{n}{2}[/tex] th and [tex]\frac{n}{2} +1[/tex] th  positions.

Given data set: 31, 41, 50, 28, 52, 38, 56, 27

Case 1: Calculate the current median

Arrange the data set in ascending order:

27, 28, 31, 38, 41, 50, 52, 56

Determine the total number of data points (n):

In this case, there are 8 data points.

Calculate the median using the general formula

In Case 1, since n = 8, it is an even number. Thus, the median is the average of the values at the 8/2 = 4th and (8/2 + 1) = 5th positions, which are 38 and 41, respectively.

Calculate the median: [tex]\frac{38 + 41}{2}[/tex] = [tex]\frac{79}{2}[/tex] = 39.5

Hence it is verified

Case 2: Calculate the updated mean

Add the new number to the data set

Add 43 to the data set:
27, 28, 31, 38, 41, 50, 52, 56, 43

Arrange the updated data set in ascending order:
27, 28, 31, 38, 41, 43, 50, 52, 56

Determine the new total number of data points (n):
In this case, there are 9 data points.

Calculate the new median using the general formula:

In case 2, since n = 9, it is an odd number. Thus, the median is the value at the (9+1)/2 = 5th position, which is 41.

Therefore, after adding 43 to the data set, the new median becomes 41.

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Sam is now 187cm tall. When we say that Sam is now 7% taller, it means that his new height is 7% greater than his original height.

To find out how much taller he is, we can calculate 7% of his original height using the percentage formula:

percentage of original value = (part / whole) * 100

In this case, the part is the increase in height, and the whole is the original height. To find the part, we can rearrange the formula to:

part = (percentage / 100) * whole

So, to find the increase in height, we can substitute the values we know:

increase in height = (7 / 100) * 175 cm

This simplifies to:

increase in height = 12.25 cm

Now that we know how much taller Sam is, we can add this increase to his original height to find his new height:

new height = original height + increase in height

new height = 175 cm + 12.25 cm = 187.25 cm

So, Sam is now 187.25 cm tall. This number is rounded to the nearest centimeter, so his new height is 187cm tall.

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Exact numbers have an unlimited number of significant figures and is therefore denoted as option D.

These are the numbers which are used in counting and defining other quantities which are assumed to be exact and usually have no remainders and they have an infinite number of significant figures.

An example is number “3” is exact as well and could be expressed as 3.0000000000000. This means that the number of significant figures can be unlimited because any amount of figures can be placed after the number which is therefore the reason why it was chosen as the correct choice.

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Answer:

D is the answer

The new coordinates after reflection will be (4,2) (-2,1) (-1,-3).

A reflection is a type of transformation that involves flipping a shape, known as the preimage, across a line, known as the line of reflection, to produce a new shape (called the image). You can picture what would happen if you turned the form across the line to graph a reflection.

The general guidelines for the reflection over x-axis equation are as follows: The reflection equation of the new reflected graph will be y=f(x) y = f (x) given an equation, y=f(x) y = f (x). In other words, the function is just multiplied by 1, which results in a curve that crosses the x-axis.

The new coordinates after reflection will be -

(4,2) (-2,1) (-1,-3)

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The equation that represents circles that have a diameter of 12 units and a center that lies on the y-axis is x²+ (y-3)² = 36

An equation is a mathematical statement that shows that two mathematical expressions are equal.

Given that, a circle have a diameter of 12 units and a center that lies on the y-axis, we need to find its equation,

We know that, the standard form of the equation of a circle is expressed as;

(x-a)² + (y-b)² = b=r²

where;

(a, b) is the center of the circle

r is the radius of the circle

We have,

diameter = 12 units

radius = 12/2 = 6 units

If the center lies on the y-axis, the center will be at (0, 3)

Substituting into the formula, we will have (x-0)² + (y-3)² = 6²

x²+ (y-3)² = 36

Hence, the equation that represents circles that have a diameter of 12 units and a center that lies on the y-axis is x²+ (y-3)² = 36

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The internal angle of a regular polygon is equal to 108°. A 5-sided polygon is a pentagon.

An -sided polygon with regular sides that are all the same length and symmetrically arranged around a common center is known as a regular polygon (i.e., the polygon is both equiangular and equilateral).

Only a few regular polygons are "constructible" with the compass and straightedge of classical Greece.

A regular polygon's interior angle measures 108°.

The pentagon is a 5-sided polygon.

A two-dimensional closed figure with three or more straight sides is called a polygon.

A polygon is any shape with straight edges, such as a triangle or rectangle.

Figures with open sides or any curved sides are not considered to be polygons.

Therefore, the internal angle of a regular polygon is equal to 108°. A 5-sided polygon is a pentagon.

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Answer: Number 3, which is √73

Step-by-step explanation:

Use the distance formula:

Distance (d)

= √(8 - 0)2 + (3 - 0)2

= √(8)2 + (3)2

= √73

= Number 3 :>

The equation y = 400x represents the relationship as shown in the table.

The correct option is table d.

What is the proportional relationship?

A proportional relationship is a relationship between two expressions, where changes in one expression mean some constant change in another expression as well. Generally, it is represented as x/y = k, where x and y are two expressions and k is constant.

Given:

A table is shown in the attached image.

To find the relationship:

We will find the common ratio,

y/x = k, where k is the proportionality constant,

400/1 =400

800/2 = 400

1200/3 = 400.

That means, the equation is,

y = 400x

Therefore, y = 400x is the equation.

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The complete question is given in the attached image.

The mass of the brass ornament as described in the task content in terms of its volume and density is; 208.8.

Recall that the formula for the density of an object is given as;

Density = Mass / Volume.

Hence, given that the density of the ornament is; 8.7 and the volume of the ornament is; 24, it follows that the mass of the ornament can be evaluated as follows;

8.7 = Mass / 24

Mass = 24 × 8.7

Mass = 208.8.

Ultimately, the mass of the brass ornament is; 208.8.

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No, it is not possible to draw a triangle.

This will be done by the property: the sum of two sides of a triangle should be more than the third side.

(4cm + 5cm) =10cm

9cm = 10cm

LHS<RHS

A triangle is not possible.

A triangle is a polygon with three edges and 3 vertices. The terminology for categorizing triangles is more than two thousand years vintage, having been defined on the first actual page of Euclid's elements.

In Euclidean geometry, any three factors, while non-collinear, decide a completely unique triangle and simultaneously, a unique plane (i.e. a -dimensional Euclidean space). In different words, there's best one plane that consists of that triangle, and every triangle is contained in some plane. If the entire geometry is only the Euclidean plane, there is the best one plane and all triangles are contained in it; however, in higher-dimensional Euclidean spaces, this is not real. this text is ready triangles in Euclidean geometry, and in particular, the Euclidean plane, except wherein otherwise stated.

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Answer:

a T-shirt = $31

a sweatshirt = $44

Step-by-step explanation:

Let T represent T-shirts and S represent sweatshirts.

Jayden sells 9 T-shirts and 3 sweatshirts for $420:

9T + 3S = 420

Carson sells 1 T-shirt and 6 sweatshirts for $296:

T + 6S = 296

-9T - 54S = -2,664

9T - 9T + 3S - 54S = 420 - 2,664

-51S = -2,244

S = 44 is the price for a sweatshirt, for the price of a T-shirt:

T + 6S = 296

T + 6×44 = 296

T + 264 = 296

T = 31

The measurements of a cylinder if its volume is 500cm3 is

Suppose that the radius of considered right circular cylinder be 'r' units.

And let its height be 'h' units.

Then, its volume is given as:

[tex]V = \pi r^2 h \: \rm unit^3[/tex]

Right circular cylinder is the cylinder in which the line joining center of top circle of the cylinder to the center of the base circle of the cylinder is perpendicular to the surface of its base, and to the top.

Given;

Volume of cylinder= 500cm3

Now, the volume of cylinder= [tex]\pi r^{2} h[/tex]

500=3.14*r^2*h

500/3.14=r^2*h

r^2*h=159.23

h=159.23/r^2

r^2=159.23/h

Therefore, the answer by the given volume will be h=159.23/r^2 and r^2=159.23/h

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The money spent on a phone plan can be represented by the inequality:

50 + 25x > 100 and the total money spent on the phone service exceeds the amount of the gift card after the 2nd month.

In mathematics, an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions.

The inequality represents the total cost of the phone plan, where x represents the number of months for which the service is used.

The first part of the inequality, 50$, represents the initial cost of the phone.

The second part, 25x, represents the monthly cost of the service, 25$ per month.

So, the inequality represents the total cost of the phone plan as the sum of the initial cost of the phone and the monthly cost of the service for x number of months.

50 + 25x > 100

It states that the total cost (50 + 25x) of the phone plan is greater than 100$.

It's the total cost you have to pay for the phone and the service.

It's used to know when the total cost exceeds 100$, which is the gift card's value.

To find out when the total spent on the phone service exceeds the amount of the gift card, we can substitute in the inequality with the given values and solve for x.

50 + 25x > 100

x > (100-50)/25

x > 2

So, the total spent on the phone service exceeds the amount of the gift card after the 2nd month.

Therefore, The money spent on a phone plan can be represented by the inequality : 50 + 25x > 100 and the total money spent on the phone service exceeds the amount of the gift card after the 2nd month.

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Answer:

each bag of trail mix costs $2 and each loaf of pumpkin bread costs $9.

Step-by-step explanation:

To find the cost of each item, we need to solve the system of equations.

We can use substitution method:

3x + 2y = 24

x + y = 11

Solving for x in the second equation:

x = 11 - y

Substituting this into the first equation:

3(11 - y) + 2y = 24

Solving for y:

33 - 3y + 2y = 24

-y = -9

y = 9

Then we can use y = 9 in the equation x = 11 - y to find x:

x = 11 - 9 = 2

So each bag of trail mix costs $2 and each loaf of pumpkin bread costs $9.

So, the y-value of the solution to the system of equations 3x + 5y = 17 and 4x + 4y = -13 is not possible to find, because the system is inconsistent and has no solution.

To find the y-value of the solution to the system of equations 3x + 5y = 17 and 4x + 4y = -13, we can use one of the methods for solving systems of equations, such as substitution, elimination, or graphing. In this case, we will use elimination method.

The first step of elimination method is to eliminate one of the variables by adding or subtracting the equations. In this case, we will multiply the first equation by 4 and the second equation by -3 and add them:

4(3x + 5y) = 4(17)

12x + 20y = 68

-3(4x + 4y) = -3(-13)

-12x - 12y = 39

then we can add these two equations:

12x + 20y = 68

-12x - 12y = 39

0 = 29

This is an impossible equation, which means that the system has no solution.

Therefore, the y value of the solution to the system of equations 3x + 5y = 17 and 4x + 4y = -13 is not possible to find, because the system is inconsistent and has no solution.

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The square root of 17 is 4.123. Therefore, 1 √17 = 1 × 4.123 = 4.123.

What is square root ?

square root of quite a number is a price, which on multiplication through itself, gives the authentic number. The square root is an inverse approach of squaring a number. consequently, squares and rectangular roots are associated principles.

suppose x is the square root of y, then it is represented as x=√y, or we can specific the same equation as x2 = y. right here, ‘√’ is the unconventional image used to symbolize the foundation of numbers. The fine quantity, whilst extended by way of itself, represents the rectangular of the number.

The square root of the square of a positive range offers the unique quantity.

Now, 17^2 · 17^-5 = 17^2 - 5 = 17^-3 = 1 / 17^3

Solve 17²⁰¹⁷ - 17  is?

17²⁰¹⁷-17

= 17²⁰¹⁷×1

= 17²⁰¹⁷

Therefore, The square root of 17 is 4.123. Therefore, 1 √17 = 1 × 4.123 = 4.123.

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When the magnitude level of an earthquake is between 3. 0 3. 9 then the category is known as minor category.

The scale goes from "minor" for earthquakes with a magnitude between 3.0 and 3.9, when people typically start to feel them, to "great" for earthquakes with a magnitude more than 8.0, when major damage is anticipated.

A single earthquake frequently has many somewhat different magnitudes published for it. This occurs because there is a complex relationship between seismic readings and magnitude, and several methods frequently produce slightly different magnitudes for the same earthquake.

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The actual height of the Statue of Liberty in meter is 93 m

It is a constant relationship between different measurable quantities.

Data of the problem:

We calculate the proportion of the model scale:

1/1000 = 9.3/x

We clear the variable, noticing the rules of clearing:

Clearing the variable we have:

1/1000 = 9.3/x

x* (1/1000) = 9.3

x = (9.3*1000) / 1

x = 9300 cm

Converting the centimeter to meters we have:

9300 cm * (1 m /100 cm) = 93 m

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The limit of sum formula is Sn=a(1−rn)1−r,for r≠1.

Consider a curve that lies above the x-axis. This graph's function is a continuous function with all of its values being non-negative, defined on the closed interval [a, b]. The definite integral ab f(x) dx of any such continuous function "f" is the region bound between the curve, the points "x = a" and "x = b," and the x-axis.

On the interval [a, b], the definite integral of a real-valued function f(x) with respect to a real variable x is written as,

[tex]\int\limits^b_a {f(x)} \, dx = F(b)-F(a)[/tex]

∫ = Integration symbol

a = Lower limit

b = Upper limit

f(x) = Integrand

dx = Integrating agent

A function may get close to two distinct limits. There are two scenarios: one in which the variable approaches its limit by values larger than the limit, and the other by values smaller than the limit.

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