How to solve the problem in the picture?

Answer:

C. Substitution

Step-by-step explanation:

Substitution is the final answer to an equation. So, the answer is C

Answer: C. Substitution

The nature of roots of the given quadratic equation is "real and unequal".

Nature of Roots:

Root type simply means the category to which the root belongs. Roots can be imaginary, real, unequal, or equal. If the discriminant is negative, the root is imaginary.

Depending on the value of the discriminant, we discuss the following cases for the nature of the root:

Case 1: D = 0

If the discriminant is zero (b2 – 4ac = 0), a, b, and c are real, and a≠0, the root of the quadratic equation is ax2 + bx + c = 0 is Real and equal. In this case the root is x = -b/2a. A graph of the equation is tangent to the x-axis at a point.

Case 2: D > 0

If the discriminant is greater than zero (b2 – 4ac > 0), then a, b, and c are real and a≠0, then the root of the quadratic equation ax2 + bx + c = 0 is real and not equal. The equation graph touches the x-axis at two different points.

Case 3: D < 0

If the discriminant is less than zero (b2 – 4ac < 0), a, b, and c are real, and a≠0, then the root of the quadratic equation ax2 + bx + c = 0 is Imaginary and not equal. Roots exist in conjugate pairs. The equation graph does not touch the x-axis.

Case 4: Perfect Square with D > 0

If D > 0 and Perfect Square, the roots of the quadratic equation are real, unequal, and rational.

Case 5: D > 0 and Not Perfect Square

If D > 0 and not perfect square, the roots of the quadratic equation are real, unequal, and irrational.

According to the Question:

The given quadratic equation:

9x²-6x-2 = 0

Here, a = 9, b = - 6 and c = -2

To Find: the nature of roots of the given quadratic equation.

∴ Discriminant, D = b²-4ac

= (-6)² - 4×9×(-2)

= 36 -36(-2)

= 36 + 72

=108

Since,

D = 108 > 0, the roots are real and unequal.

Hence, the nature of roots of the given quadratic equation is "real and unequal".

Learn more about Quadratic Equation:

https://brainly.com/question/29011747

#SPJ4

can you give a more clearer image if possible, please?

Answer:

Congruent means the same shape but perhaps moved or rotated or reflected

Similar means a shape that has been enlarged by a scale factor

Step-by-step explanation:

Answer:

cowboys fan:0  im guessing lol

Step-by-step explanation:

cowboys aren't bad so i'm not complaining:)

The solution of the equation 2x^2 + 5x + 3 = 0 is x = -3 and x = -1/2. This can be found by using the Quadratic Formula, which states that for any quadratic equation of the form ax^2 + bx + c = 0, the solutions are x = (-b +/- sqrt(b^2 - 4ac))/2a.

The solution of the equation 2x^2 + 5x + 3 = 0 can be found by using the Quadratic Formula. The Quadratic Formula states that for any quadratic equation of the form ax^2 + bx + c = 0, the solutions are x = (-b +/- sqrt(b^2 - 4ac))/2a. By substituting the given coefficients a = 2, b = 5, and c = 3 into this equation, we can solve for x. First, we calculate the discriminant b^2 - 4ac, which in this case is 25 - 24 = 1. Because the discriminant is positive, the equation has two real solutions. Next, we use the Quadratic Formula to calculate the solutions. To calculate the first solution, we substitute the given coefficients into the formula and solve for x: x = (-5 +/- sqrt(1))/2 = (-5 +/- 1)/2 = -3 and -1/2.

Therefore, the solution of the equation 2x^2 + 5x + 3 = 0 is x = -3 and x = -1/2.

Discriminant: b^2 - 4ac = 25 - 24 = 1

Solution 1: x = (-5 +/- sqrt(1))/2 = (-5 +/- 1)/2 = -3

Solution 2: x = (-5 +/- sqrt(1))/2 = (-5 +/- 1)/2 = -1/2

Learn more about equation here

https://brainly.com/question/29657992

#SPJ4

The area henry' rectangular kitchen island top with length 35. 5 inches and width 46. 75 inches is 1659. 625 inch².

The word "area" means an open area. A shape's area is calculated using its length and width. Length is one-dimensional and measured in units such as feet (ft), yards (yd), and inches (in). Area is defined as the total space occupied by a planar (2-D) surface or shape of an object. It is measured in units such as square feet (ft²) and square inches (in²)

Let " l " be length of rectangular island top and "w" be width of it.

We have , l = 35.5 inches , w = 46.75 inches

We have to calculate the area if henry' rectangular kitchen iland top.

let "A" be area of rectangular island top .

As discuss above, Required Area , A = l × w

=> A = 35.5 inches × 46.75 inches

=> A = 1659.625 inch²

Hence, required area is 1659.625 square inches.

To learn more about Area , refer:

https://brainly.com/question/16501078

#SPJ4

Answer: The answer is option 1

Step-by-step explanation

The given equation is [tex](p^{2} r^{3} /pr^{4} )^{2}[/tex]

 [tex](p^{2} r^{3} /pr^{4})^{2}[/tex]  =  [tex]p^{4} r^{6} /p^{2}r^{8}[/tex]  (the given equation whole square is applied)

[tex]p^{4} r^{6} /p^{2} r^{8}[/tex]  =  [tex]p^{2} /r^{2}[/tex]   (the p and r are canceled out )

Therefore the correct answer is  [tex]p^{2} /r^{2}[/tex]

The statement that is true is there are no outliers in this distribution.

What is distribution ?

Selling and providing goods and services to customers is the process of distribution. The phrase is used to refer to marketing channels that are employed to contact clients in various contexts and geographical locations.

There are four different categories of distribution channels: direct selling, selling through middlemen, dual distribution, and reverse logistics networks.

The delivery of goods from manufacturers to end users is ensured by a network of distributors or intermediaries known as a distribution channel. It is also in charge of sending payments made by clients for purchases made by producers.

In this scenario, the noticeable outliers in the data sets are 200 and 210. Thus, a statement which is not true about the data provided in the box plot above, is that there are no outliers in this distribution

To learn more about distribution from the given link  

https://brainly.com/question/23286309

#SPJ1

The value of sinx is 1 - 3cosx

What is Trigonometry?

Trigonometry is a field of mathematics that explores the connections between triangle side lengths and angles. The topic arose in the Hellenistic civilization during the third century BC from geometric applications to astronomical research. Today, four varieties of trigonometry are used: core, plane, spherical, and analytic. The ratio of the sides and angles of a right triangle is the subject of core trigonometry.

Solution:

1/cosx - tanx = 3

we can write tanx as sinx/cosx

this is because we know that sinx = Perpendicular / Hypotenuse

and cosx = Base / Hypotenuse

so if we divide sinx by cosx we will find that it is equal to Perpendicular / Base which is nothing but tanx

1-sinx = 3cosx

sinx = 1 - 3cosx

To learn more about Trigonometry from the given link

https://brainly.com/question/24349828

#SPJ1

-a/b=-5/3  is the slope of the line 5x 3y 15

for

ax+by=c

the slope is -a/b

the slope of paralell lines are the same

find slope

5x+3y=15

-a/b=-5/3

paralell as same slope

the slopes are:

L1: slope 3

L2: slope -3

L3: slope -1/3

So now multiply the slopes of each pair of lines:

L1 and L2: 3 * (-3) = - 9 => No, they are not perpendicular

L2 and L3: (-3) * (-1/3) = 1 => No, they are not perpendicular

L1 and L3: (3) *  (-1/3) = -1 => Yes, they are penpendicular.

learn more about of slope here

https://brainly.com/question/3605446

#SPJ4

The limit of h(x) as x approaches infinity is ∞, and as x approaches 0, is undefined due to division by zero.

x h(x)

1 2 + 2

2 1.41 + 1

4 2 + 0.25

8 2.83 + 0.125

16 4 + 0.0625

To find the limit of h(x) as x approaches infinity, we see that h(x) = √(x) + 2/x - 5. As x increases without bounds, the square root of x and 2/x both approach infinity, but the value of -5 is constant. Therefore, the limit of h(x) as x approaches infinity is infinite.

To find the limit of h(x) as x approaches 0, we see that h(x) = √(x) + 2/x - 5. As x approaches 0, the value of the square root of x approaches 0, and the value of 2/x approaches infinity. However, the value of -5 is constant. Therefore, the limit of h(x) as x approaches 0 is -5 + ∞, which is undefined.

The limit of h(x) as x approaches 0 is undefined.

You could also say that the function is not defined at x = 0, meaning that the limit as x approaches 0 does not exist.

It's worth noting that the original function is not defined when x=0 as we are dividing by x, so it's impossible to calculate the limit of this function at that point.

To learn more about the limit's value please refer:

https://brainly.com/question/21934225

#SPJ4

Answer:

17.5%

Step-by-step explanation:

We know that there are 35 out of 200 allergic to peanut

So we take

35 divided by 200, then times 100% = 17.5%

So, 17.5  of children are allergic to peanut

The circumference of the circle with a radius of 4 inches is 8π inches.

The circumference is the perimeter of a circle or ellipse in geometry. That is, the circumference would be the circle's arc length if it were opened up and straightened out to a line segment. In general, the perimeter is the length of the curve around any closed figure.

Given that the radius of the circle is 4 inches. The circumference of the circle will be calculated by the formula,

Circumference = 2πr

Circumference = 2 x π x 4

Circumference = 8π inches

To know more about the circumference of a circle follow

https://brainly.com/question/402655

#SPJ1

Arithmetic mean of the data set 4, 5, 0, 10, 8 and 3  is '5'

As per the question the given data set is :

4 , 5 , 0 , 10 , 8 and 3

Number of observations in given data set are '6'

We have to determine the value of arithmetic mean of the data

Arithmetic Mean is simply the mean or average for a set of data or a collection of numbers.

Arithmetic mean is defined as the ratio of sum of all observations in given data set to the total number of values.

Arithmetic mean ( AM ) formula is

AM = (sum of all observations in given data set) ÷ (total number of observations)

Sum of all observations in given data set :

= 4 + 5 + 0 + 10 + 8 + 3

= 30

Arithmetic mean :

[tex]=\frac{30}{6}[/tex]

= 5

Therefore arithmetic mean of the given data set 4, 5, 0, 10, 8 and 3  is 5.

For more questions on arithmetic mean

https://brainly.com/question/14862821

#SPJ4

The line produced by the equation 3x + 4y=-12 has a slope of -3/4.

To find the slope of a line represented by the equation 3x + 4y = -12, you need to have the equation in the form y = mx + b, where m is the slope and b is the y-intercept (the point at which the line crosses the y-axis).

To put the equation 3x + 4y = -12 in this form, you can start by isolating the y term on one side of the equation:

3x + 4y = -12

4y = -3x - 12

y = (-3/4)x - (12/4)

The slope of the line produced by the equation 3x + 4y=-12 is therefore -3/4.

The complete question is:-

What is the slope of the line given by the equation 3x +4y =- 12?

To learn more about slope, refer;-

https://brainly.com/question/19131126

#SPJ4

Answer: the height of this triangle is 55.4 mm

Step-by-step explanation:

[tex]\displaystyle\\Area\ of\ a\ triangle:\ A =\ \frac{ah}{2} \\\\Hence,\\[/tex]

Multiply both parts of the equation by 2:

[tex]2A=ah[/tex]

Divide both parts of the equation by a:

[tex]\displaystyle\\\frac{2A}{a} =h\\\\Thus,\ h=\frac{2A}{a} \\\\h=\frac{2(227.14)}{8.2} \\\\h=\frac{454.28}{8,2} \\\\h=55.4\ mm[/tex]

The value of angle x is 70° and angle y is 60° in the given figure with exterior angle = 120°

From the given figure, we know that the Exterior angle = 120°

To find the values of x and y we will follow the following steps.

We know that the sum of interior opposite angles is equal to the exterior angle of the triangle.

The exterior angle of the triangle=120°

The interior angles are x and 50°

50° + x = 120°

x = 120°- 50°

x = 70°

Also, we know that the sum of the y and the exterior angle is 180° because they are forming a linear pair.

Hence we have,

y + 120° = 180°

y = 180° - 120°

y = 60°

Therefore, the value of angle x is 70° and angle y is 60°.

Read more about Exterior angle property:

brainly.com/question/29407004

#SPJ4

The probability of getting an ace from a well-shuffled deck of 52 cards is  1/13 and the probability of not getting an ace is 12/13

We can calculate the probability by the following method:

Total number of cards in a pack of cards= 52

Number of ace cards in a pack of cards= 4

Probability of an event= Number of possibilities of that event / Total number of possibilities

(i) If drawing an ace card is considered an event, suppose E, then:

P(E)= Number of ace cards/ Total number of cards

= 4/52

(ii) Probability of any event other than E= 1- Probability of the event E=

If the drawing of a non-ace card is considered an event, suppose E', then

P(E')= 1- the probability of drawing an ace card

= 1- P(E)

= 1-1/13

= (13-1)/ 13

= 12/13

Read more about Probability from:

https://brainly.com/question/26900823

In order to determine the  height of a box we can use the formula h = V/b or if the given box is a square box or a cube then we can calculate its height by finding the cube root of its volume.

In the formula , V = volume and b = base

Volume is calculated in three dimension , it is the measure of the space occupied by an object . Any given solids can take the form of a cube, cuboid, cone, cylinder, or sphere.

There are various shapes in geometry and all of them have a specific formula to calculate the volume.

The SI unit of volume for a cube is m³.

To learn more about volume

brainly.com/question/13338592

#SPJ4

Answer:

43.1

Step-by-step explanation:

2.5 % = .025    look for this value on the z-score table to find this corresponds to z = - 1.96   Standard Deviations

72.5      - 1.96 * 15    = 43.1  

Answer: $2.70

Step-by-step explanation:

10% = 0.1

Take 27 times 0.1 = $2.70

The required coordinates of point P, following the given coordinate points, are (5.5, -1).

Let's assume that point P has coordinates (x, y). We want to find the coordinates of point P along the directed line segment AB, such that the ratio of AP to PB is 1 to 4.

The coordinates of point A are (8, 0), and the coordinates of point B are (3, -2).

According to the ratio given, we have:

AP/PB = 1/4

Now, we can use the midpoint formula to find the coordinates of point P. The midpoint formula states that the coordinates of the midpoint M between two points (x₁, y₁) and (x₂, y₂) are given by:

Midpoint M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)

Let's use the midpoint formula to find the coordinates of point P:

x = (8 + 3) / 2
  = 5.5

y = (0 + (-2)) / 2
  = -1

So, the coordinates of point P are (5.5, -1).

Learn more about coordinates here:

https://brainly.com/question/29626144

#SPJ4

The volume of the pyramid is one-third of the product of its height and the area of its base. That is volume of the pyramid is linearly proportional to its height and the area of its base.

A pyramid is a solid with a base and rectangle face on the edge of base meeting at a vertex. Generally we consider a right pyramid.

Consider a pyramid of base area A and height h, the volume of the pyramid is one-third of the product of its height and the area of its base, that is the volume formula of pyramid is

V = A × h/ 3

That is

V ∝ A and

V ∝ h

To know more on pyramid

https://brainly.com/question/17615619

#SPJ4

The required mean of 2 and 12 is 7.

One kind of average is the mean.

It is calculated by dividing the total number of values in a list of values, such as measurements or numbers, by the total number of values in the list.

Add up each value in the set to determine the mean.

So, we have the values:

2 and 12

Mean formula: Sum of terms / Number of terms

Now, solve for the mean of the 2 values using the formula as follows:

Mean: Sum of terms / Number of terms

Mean: 14 / 2

Mean: 7

Therefore, the required mean of 2 and 12 is 7.

Know more about the mean here:

brainly.com/question/1136789

#SPJ4

Answer:

1. has ordered both a gown and a yearbook: 54%

2. has ordered a yearbook or a gown: 58% + 54% = 112%

3. has ordered neither a yearbook nor a gown: 100% - (58% + 54%) = 88%

4. has ordered a yearbook but not a gown: 54% - 15% = 39%

Step-by-step explanation:

The factor of x³y³ is x.x.x.y.y.y or x²xy²y.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

x³y³

This can be factorized as,
x.x.x.y.y.y

or

x²xy²y

Thus,

The factor is x.x.x.y.y.y or x²xy²y.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ4

Answer:

Right angle triangles

Step-by-step explanation:

the only type of triangles that can be solved with pythagorem theorem is right angle triangles. otherwise you would need to use a different formula

Tommy and Zach will be 16 miles apart after 2.90 hours.

Let the time taken for Tommy and Zach to run until they are 16 miles apart be t hours.

Tommy runs North at a speed of 5 miles per hour.

Therefore, the distance covered by Tommy in t hours is 5 multiplied by t hours:

=5t miles

Zach runs East at a speed of 8 miles per hour.

Zach started running 2 hours later so that he would run for (t - 2) hours.

Distance covered by Zach in (t - 2) hours running at a speed of 8 miles per hour :

=8(t - 2) miles

Since they are now 16 miles apart, Pythagoras's theorem, a²+ b² = c², is applied.

[8(t - 2)]²+ (5t)² = 16²

64(t - 2)² + 25t² = 256

64(t² + 4 - 4t) + 25t² = 256

64t² + 256 - 256t + 25t² = 256

89t² -256t + 256 - 256 = 0

89t² - 256t = 0

t( 89t - 256) = 0

(89t - 256) = 0

9t = 256

= 256÷9

t = 2.90 hours

Therefore, for 2.90 hours, Zach and Tommy will be 16 miles apart.

Read more on distance, time and speed:

https://brainly.com/question/16992697?referrer=searchResults

#SPJ4

The median when the mean is 48 and the mode is 15 is 37.

The median is the value that divides a data sample, a population, or a probability distribution's upper and lower halves in statistics and probability theory.

It could be referred to as "the middle" value for a data set.

For instance, what is the median of our data set if we know that we have a mean of 10 and a mode of 4?

Since the Mean - Mode is 3, we may state that 10 - 4 equals 3. (10 – Median).

According to some algebra, the median of our data is 8 because 2 = (10 - Median).

So, the values are:
Mean = 48

Mode = 15

Formula: Mean – Mode = 3(Mean – Median)

Now, calculate the median using the formula as follows:

48 – 15 = 3(48– Median)

33 = 144 - 3Median

3Median = 144 - 33

3Median = 111

Median = 111/3

Median = 37

Therefore, the median when the mean is 48 and the mode is 15 is 37.

Know more about the median here:

https://brainly.com/question/26151333

#SPJ4