Helen had $12 but spent $3 of it. What per cent did she spend?

12%

25%

30%

33 1/3%

Answer:

the perimeter of the polygon can be calculated by adding all sides of the polygon

We can restricted domain of the quadratic(y=x^2 +4) is {-∞,0} or {0,∞}.

What is Quadratic Equation?

Having the form ax^2 + bx + c = 0, quadratic equations are second-degree algebraic expressions. From the term "quad," which meaning square, comes the word "quadratic." A quadratic equation is a "equation of degree 2," to put it another way. A quadratic equation is employed in numerous situations.  In addition, there are many uses for quadratic equations in physics, engineering, astronomy, etc.

There are a maximum of two solutions for x in the second-degree quadratic equations. These two solutions for x are denoted as (, ) and are also known as the roots of the quadratic equations.

What is Domain?

The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f make up this set (x). A function's range is the collection of values it can take as input. After we enter an x value, the function outputs this sequence of values.

It cannot have an inverse function because the largest exponent is even (2), unless the domain is constrained.

We know that the vertex is at x = 0 since our equation is already in vertex form;

a(x - h)^2 + k, or 1(x - 0) + 4

In order to limit the domain to only one side of x = 0

either  {-∞,0} or {0,∞}

Therefore, We can restricted domain of the quadratic(y=x^2 +4) is {-∞,0} or {0,∞}.

Learn more about Domain click here:

https://brainly.com/question/26098895

#SPJ1

Answer:

8

I wish you luck in your assignments.

Answer:

The length of the third side is 7.

Step-by-step explanation:

We can use the Pythagorean theorem to evaluate the length of the third side.

[tex]a^2+b^2=c^2[/tex]

Let the third side be [tex]a[/tex].

Lets solve for [tex]a.[/tex]

Subtract [tex]b^2[/tex] from both sides.

[tex]a^2=c^2-b^2[/tex]

Take the square root of both sides.

[tex]a=\sqrt{c^2-b^2}[/tex]

We are given

[tex]c=\sqrt{58} \\b=3[/tex]

Lets evaluate [tex]a[/tex].

[tex]a=\sqrt{(\sqrt{58} )^2-3^2}[/tex]

Simplify.

[tex]a=\sqrt{58-9}\\a=\sqrt{49} \\a=7[/tex]

The equation that she can use as statement 5 is c) (3x + 24): 51 = 3x: 85.

To prove that x = 12, Dora must first prove that the segments ST and RQ are parallel. This can be done by showing that the angles formed by their intersection are congruent.

Since the angles, QRT and STP are congruent (statement 2) and the angles SPT and QPR are congruent (statement 3), the Triangle-Angle Angle Similarity Postulate can be applied to show that triangle SPT is congruent to triangle QPR (statement 4).

Now, the corresponding sides of the two triangles must be in proportion in order to prove that x = 12. For this, Dora can use the equation (3x + 24) : 51 = 3x : 85 (statement 5). This equation states that the ratio of the lengths of the corresponding sides of the two triangles is equal to the ratio of 3x to 51 and 3x to 85, respectively.

Since the ratio of the sides of the two triangles must be equal, then 3x + 24 must be equal to 85 and 3x must be equal to 51. Solving for x, we get x = 12, proving that if segment ST is parallel to segment RQ, then x = 12.

For more questions like Congruent click the link below:

https://brainly.com/question/12413243

#SPJ4

The complete question

Look at the figure shown below. Dora is writing statements as shown to prove that if segment ST is parallel to segment RQ, then x = 12.

1.Segment ST is parallel to segment QR

Given

2.Angle QRT is congruent to angle STP

Corresponding angles formed by parallel lines and their transversal are congruent.

3.Angle SPT is congruent to angle QPR

Reflexive property of angles.

4.Triangle SPT is congruent to triangle QPR

Angle-Angle Similarity Postulate

5.?Corresponding sides of similar triangles are in proportion.

Which equation can she use as statement 5?

(3x + 24) : 3x = 85 : 51

(3x + 24) : 81 = 3x : 51

(3x + 24) : 51 = 3x : 85

34 : 24 = 3x : 51

Yes, function C is a piecewise function because it is defined differently for different input values.

To learn more about subset of algebraic functions refer to:

https://brainly.com/question/30116979

#SPJ1

There would be exactly 42 tiles in the 10th pattern.

As Tiles are exceeding by the multiple of 4, So, there will be exactly 42 tiles in the 10th pattern.

A recurring arrangement of numbers, forms, colors, and other elements constitutes a pattern in mathematics. The Pattern can be connected to any kind of occasion or thing. When a group of numbers are arranged in a particular way, the arrangement is referred to as a pattern.

A pattern in mathematics is a series of recurring figures, shapes, or numbers. Any kind of event or thing can be connected to a pattern. A pattern has a rule that identifies the items that are part of the pattern and those that are not.

To learn more about Patterns from given link

https://brainly.com/question/17386984

#SPJ1

The answer is point C is further from point A than point B

A Cartesian coordinate system in a plane is a coordinate system that specifies each point uniquely by a pair of numerical coordinates,

Given here: The points A(-5,8) ,  B(1,0) C(-10,16)

length of AB= [tex]\sqrt{(-5-1)^2+(8-1)^2}[/tex]

                    =9.22 units

Similarly length of AC= [tex]\sqrt{(-5+10)^2+(8-16)^2}[/tex]

                                    = 9.433

Hence, point C is further from point A than point B

Learn more about co-ordinate system here:

https://brainly.com/question/29762404

#SPJ1

Answer:

1.5 on edg

Step-by-step explanation:

When two triangles are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar triangles. In Figure 1, Δ ABC∼ Δ DEF. Figure 1 Similar triangles whose scale factor is 2 : 1. The ratios of corresponding sides are 6/3, 8/4, 10/5.

So on solving the provided question, we can say that - in the circle angle DGF = 59 .

Every point in the plane that is a certain distance away from a certain point forms a circle (center). It is, thus, a curve formed by points moving in the plane at a fixed distance from a point. At every angle, it is also rotationally symmetric about the center. A circle is a closed two-dimensional object where every pair of points in the plane are equally spaced out from the "center." A line that goes through the circle creates a specular symmetry line. At every angle, it is also rotationally symmetric about the center.

here,

in the circle

angle AGC = angle DGF

so angle DGF = 59

To know more about circle visit:

https://brainly.com/question/29142813

#SPJ1

Answer:

"x-9" can also be written as "x minus nine" or "nine subtracted from x"

Graphing works as a solution to approximate two equations as the solution(s) to f(x) = g(x) is/re given by the intersection points of the graphs of each of the functions.

A system of equations is composed by multiple equations, and the solutions are the values of x for which all the equations that compose the system have the same numeric value.

Hence, on a graph, the solution of a system of equations is given by the intersection points of all the equations that compose the system on the graph.

More can be learned about a system of equations at https://brainly.com/question/30374328

#SPJ1

Answer:

1) y=0.56x

2)y=5x

3)y= 0.25x

Step-by-step explanation:

1) 2.24/4 = $0.56 (Cost per carton)

2) 15/3=5 ( miles ran per hour)

3) 3/12 = 0.25 (cost per ounce)

The equation of the line that passes through the point (1,7) with slope

3|5 is 5y=3x+32

Finding the slope between two points on a line and solving for the y-intercept in the slope-intercept equation y=mx+b allows us to formulate an equation for that line.

To find an equation of a line given the slope and a point.

Identify the slope.

Identify the point.

Substitute the values into the point-slope form, y − y 1 = m ( x − x 1 ) . y − y 1 = m ( x − x 1 ) .

Write the equation in slope-intercept form.

According to the given equation

y=mx+c

where m=3/5

To find c we substitute the values of x as 1 and y as 7

y=3/5x+c

7=3/5+c

c=32/5

Hence substituting c in the equation we get

5y=3x+32

To learn more about equations, click the following link:-

https://brainly.com/question/18831322

#SPJ1

Answer:

1.16666666667

Step-by-step explanation: This would be an irrational number

Answer:

it tell me different

Step-by-step explanation:

A fraction whose value is less than 1 is called a proper fraction. The numerator is less than the denominator.

A fraction represents the part of a set of objects. It has two parts separated by a dividing line, generally written a/b, where a is numerator and b is denominator.

There are 3 types of fraction. They are

1. Proper fraction

A proper fraction is a fraction whose numerator is less than the denominator. It makes the value is less than 1.

Example: 1/4, 3/5.

2. Improper fraction

An improper fraction is a fraction whose numerator is more than the denominator. The value is more than one.

Example: 6/5, 7/4.

3. Mixed fraction

A mixed fraction is a combination of a whole number and a proper fraction. It is the quotient and the remainder of improper fraction.

Example:

From the explanation, we get a fraction that the value is less than one is a proper fraction.

Your question is incomplete, but most probably your full question was

A fraction whose value is less than 1 is called ...

Learn more about fraction here:

brainly.com/question/30197215

#SPJ4

Answer: 2x = 1/2

You just have to simplify the expression

Hope this helps !

To write the expression in its simplest form, we need to simplify each term and then combine like terms.

The first term of the expression is 2x²y. This term is already in its simplest form and doesn't require any further simplification.

The second term of the expression is xy. This term is also in its simplest form and doesn't require any further simplification.

The third term of the expression is -3x. This term is also in its simplest form and doesn't require any further simplification.

The fourth term of the expression is 12x.xy. To simplify this term, we need to distribute the 12 over the x and y. So, we get 12x.y.

Now that all terms are simplified, we can combine like terms. Since the terms xy and 12x.y are the same, we can add them together to get (12+1)xy = 13xy.

So, the expression in its simplest form is 2x²y + 13xy - 3x.

We can further simplify the above expression by combining x²y and xy together as (x²+1)xy = x³y

So, the final expression in its simplest form is x³y + 13xy - 3x.

On solving the provided question, we can say that by using the triangle, ∠LNM=35° and ∠NML=55°

A triangle is a polygon since it has three sides and three vertices. It is one of the basic geometric shapes. The name given to a triangle containing the vertices A, B, and C is Triangle ABC. A unique plane and triangle in Euclidean geometry are discovered when the three points are not collinear. Three sides and three corners define a triangle as a polygon. The triangle's corners are defined as the locations where the three sides converge. 180 degrees is the result of multiplying three triangle angles.

∠LNM=(4x+3)°

∠NML=(5x+15)°

∠NLM=90°

Since, its right angle triangle, sum of all angle is 180°

∠LNM+∠NML+∠NLM=180°

(4x+3)+(5x+15)+90=180°

9x+18=90°

9x=72

x=8

Hence,

∠LNM=(4x+3)°=4*8+3=35°

∠NML=(5x+15)°=5*8+15=55°

To know more about triangle visit:

https://brainly.com/question/2773823

#SPJ1

Answer:

y=4 and x=-1

Step-by-step explanation:

so in the first equation get x by itself so subtract 2x and subtract y and then divide by two so you should have x=1+y/2

then in the second equation plug in 1+y/2 for x

y=7(1-y/2)+11

(distribute) y=7-7y/2+11

y=18-3.5y

(add 3.5y) y+3.5y=18

4.5y=18

divide by 4.5 and y=4

now go back to the first equation and solve for x

4=-2x+2

2=-2x

x=-1

Answer:

Step-by-step explanation:

Lorenzo is running the 100-meter dash and after 67 meters his right shoe falls off. So the remaining distance that Lorenzo has to run with 1 shoe is:

100-meter dash - 67 meters = 33 meters

So, Lorenzo has to run 33 meters with 1 shoe.

Answer:

Step-by-step explanation:

iuuuuū

The slope is 1/2 throughout the entire line.

To learn more about line graph refers to:

brainly.com/question/1298144

#SPJ1

To find the coordinates of the image after reflection in a given line, first determine the equation of the line.

Coordinate is a term used to describe a point in a two-dimensional or three-dimensional space. In two-dimensional space, coordinates are usually written in the form (x, y), with x representing the horizontal coordinate and y representing the vertical coordinate. In three-dimensional space, coordinates are written in the form (x, y, z), with x representing the horizontal coordinate, y representing the vertical coordinate and z representing the depth coordinate. Coordinates can be used to accurately pinpoint the exact location of an object or point on a map.

Then, determine the coordinates of the point of reflection. After this, use the equation of the line to find the equation of the reflection. Then, use the equation of the reflection to calculate the coordinates of the image after reflection. Finally, use the coordinates of the image to plot the desired point in a graph.

To know more about coordinates click-
https://brainly.com/question/27481419
#SPJ4

Answer:

r

Step-by-step explanation:

e

Answer:

Step-by-step explanation:

7 left 3 up

(x-7)(y+3)

Answer:

The probability of heads is equal to the probability of tails.

Answer:

Not sure if this is what you are looking for because there isn’t much information given but the equation for this problem would be

25x+18.25

Step-by-step explanation:

Hope this helps