Select all equations that have x = 9 as a solution.


Check all that are true.

x + 7 = 15

26 − x = 17

5x = 49

63 ÷ x = 7

23 + x = 32

180 lb to 140 kg conversion. The base unit of weight in the metric system is the kilograms, sometimes known as the kilograms.

Convert 140 Kilograms to Pounds.

kg             lb

140.00 308.65

140.01 308.67

140.02 308.69

140.03  308.71

Basically, to convert cost per kg to cost per lb, take the price for the kilogramme and divide it by 2.2046 to get the price for the pound. Fundamentally, 1 kilogramme equals 2.2046 pounds (there is a longer decimal position, but I shorten it to 2.2046).

Mathematical and technical fields frequently need to convert between kilogrammes and pounds; fortunately, this is a simple process. The majority of the time, all you have to do to convert is multiply the number of kilograms by 2.2 to get the number of pounds. Generally speaking, there are 2.2046 pounds in every kilograms.

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Answer:

Yes, the set of ordered pairs (1, 7), (3, 8), (3, 6), (6, 5), (2, 11), (1, 4) represents a relation. This relation is a function since each input (x-value) has a single output (y-value).

Step-by-step explanation:

Answer: You have a credit card that has a balance of $3,589.90 and a credit limit of $5,000. How much is the balance over the acceptable debt ratio percentage? $981.88.

Step-by-step explanation:

Answer:

Step-by-step explanation:

the acceptable debt rate would be 43%

The length of the fabric is 15cm.

What is Pythagoras' theorem?

A right triangle's three sides are related in Euclidean geometry by the Pythagorean theorem, also known as Pythagoras' theorem. According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse.

Here, we have

Given: Elijah takes a rectangular piece of fabric and makes a diagonal cut from one corner to the opposite corner. The cut he makes is 17 inches long and the width of the fabric is 8 inches.

We have to find the fabric's length.

We apply here Pythagoras theorem and we get

a² + b² = c²

a² +  (8)² = (17)²

a² +64 = 289

a²  = 289 - 64

a²  = 225

a = 15

Hence, the length of the fabric is 15cm.

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The probability of someone being the odd man out is 0.667

What is Probability?

Probability is an area of mathematics that deals with numerical descriptions of how probable an event is to occur or how likely a statement is to be true. The probability of an event is a number between 0 and 1, where 0 denotes the event's impossibility and 1 represents certainty.

Given,

3 persons toss a coin to decide who will buy refreshments for the group.

So, total no. of outcomes = (outcomes per each person) total persons

Total no. of outcomes = [tex]2^{3}[/tex]

Total no. of outcomes = 9

The outcomes that one person gets tails and others do not are = (THHH) + (HTHH) + (HHTH)+ (HHHT).

Here T = person getting tails, H = person getting heads.

Number of times one individual receives tails while another does not = 4.

Now, we try to calculate the number of outcomes for one person getting heads and others getting tails, and the results are as follows:

The chances of one individual getting tails while others do not = (HTTT) + (THTT) + (TTHT)+ (TTTH).

The number of possibilities that one individual gets heads while others do not = 3

So, total no. of possibilities that we get a loser = 3+3

Total no. of possibilities that we get a loss = 6.

We know that probability is defined as probability= total no. of possibilities / total no. of outcomes

Now, we have a probability that there is a loser in any game.

So, required probability = 6/9

Required probability = 0.667

∴ The required probability is 0.667

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The probability of someone being the odd man out is 0.667

What is Probability?

Probability is an area of mathematics that deals with numerical descriptions of how probable an event is to occur or how likely a statement is to be true. The probability of an event is a number between 0 and 1, where 0 denotes the event's impossibility and 1 represents certainty.

Given,

3 people toss a coin to decide who will buy refreshments for the group.

So, total no. of outcomes = (outcomes per each person) total persons

Total no. of outcomes = 2*2*2

Total no. of outcomes = 8

The outcomes that one person gets tails and others do not are = (THHH) + (HTHH) + (HHTH)+ (HHHT).

Here T = person getting tails, H = person getting heads.

The number of times one individual receives tails while another does not = 4.

Now, we try to calculate the number of outcomes for one person getting heads and others getting tails, and the results are as follows:

The chances of one individual getting tails while others do not = (HTTT) + (THTT) + (TTHT)+ (TTTH).

The number of possibilities that one individual gets heads while others do not = 3

So, the total no. of possibilities that we get a loser = 3+3

Total no. of possibilities that we get a loss = 6.

We know that probability is defined as probability= total no. of possibilities / total no. of outcomes

Now, we have a probability that there is a loser in any game.

So, required probability = 6/9

Required probability = 0.667

∴ The required probability is 0.667

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The percentage of the corals at the dive site that Sarah observes died more than 12 months ago is 21%.

A percentage is a specification of the quantity of an item in a collection per 100 of all items in the  collection.

The observations of the corals are;

The percentage of the corals that are healthy = 30%

Percentage of the corals that are unhealthy = 40%

Percentage of the corals that are dead = 30%

Percentage of the dead corals that died in the past 12 months = 30%

The percentage of corals Sarah observed died more than 12 months ago; required.

The 30% of the dead corals that died in the last 12 months, indicatesa that the percentage of the dead corals that died more than 12 months ago = 100% - 30% = 70%

The percentage of the dead corals that died more than 12 months ago = 70%

Therefore, the percentage of the population of corals at the dive site that died more than 12 months ago = 70% × 30% = 21%

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An inequality to describe the constraints is x + 2y ≤ 30

What is inequality?

A declaration of an order relationship between two numbers or algebraic expressions, such as greater than, greater than, or equal to, less than, or less than or equal to. Either questions or theorems can be used to express inequality problems, and both can be solved using methods similar to those used to solve equations.

Here, we have

Assume that a free throw is represented by f and that a Juli throw is represented by j.

We can then write an inequality equation as

10f + 10j = 30

Where 30 is the total number of points earned

F is the free throws made, in which each gives or earns one point

J is the jump shots made, in which each gives or earns two points.

Hence, an inequality to describe the constraints is x + 2y ≤ 30

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Step-by-step explanation:

The expression (2n^4)^-2 can be simplified as follows:

(2n^4)^-2 = 1 / (2n^4)^2

Using the rule that (a^b)^c = a^(bc), we can simplify further:

= 1 / (2^2 * n^4 * 2)

= 1 / (4 * n^4 * 2)

= 1 / (8 * n^4)

So (2n^4)^-2 = 1 / (8 * n^4) in simplified form using positive exponents.

The greatest common factor from the terms of the polynomial 8x4 − 12x3 + 16x is 4x(2x3 − 3x2 + 4). Option B

Algebraic expressions are described as mathematical expressions that are comprised of terms, variables, coefficients, factors and constants.

These algebraic expressions are also composed of mathematical or arithmetic operations, such as;

From the information given, we have that;

8x⁴ − 12x³ + 16x

Factor the common terms

4x(2x³ - 3x² + 8)

Hence, the expression is 4x(2x³ - 3x² + 8)

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The subscriber will pay $0.40 more if they pay using a credit card with a 27.999 APR instead of using cash.

Here are the steps to calculate the amount paid more when paying using a credit card instead of cash:

Take the annual percentage rate (APR) of 27.999 and divide it by 12 to get the monthly interest rate.

Multiply the monthly interest rate by the balance ($16.99) to get the monthly interest charge.

Add the monthly interest charge to the balance ($16.99).

This gives you the total amount paid after one month of interest charges.

Subtract the original balance ($16.99) from the total amount paid after one month of interest charges.

This gives you the amount paid more due to the interest charges.

The final answer would be the amount paid more, which is $0.40 in this case.

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Answer:

1/2 Bh

Step-by-step explanation:

find the area of the base (B) by multiplying.5 xlengthxwidth. The take this answer, multiply by .5 and the height of the pyramid.

The volume of a  triangular pyramid is 1/2 × area of the base× height.

What is a triangular pyramid?

A pyramid with a triangular base is referred to as a triangular pyramid. Vertices are essentially corners in geometry. Both regular and irregular triangular-based pyramids have four vertices. Pyramids with triangular bases have six edges, three of which run along the base and three of which rise above the base.

The volume of an object has defined as the space that is occupied by the object.

The volume of a triangular pyramid is 1/2 × B × h.

B =  area of the base of the triangular pyramid.

h = Height of  triangular pyramid

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The composite result function of (f( g(x) ) in the given functions f(x) = x+4 and g(x) = 12x + 1 is 12x + 5.

A function is simply a relationship that maps one input to one output.

Given that;

First, we set up the composite result function f(g(x))

f(x) = x + 4

f( g(x) ) = g(x) + 4

f( 12x + 1 ) = ( 12x + 1 ) + 4

Simplify

f( 12x + 1 ) = 12x + 1 + 4

Add 1 and 4

f( 12x + 1 ) = 12x + 5

Therefore, the composite function f( 12x + 1 ) is  12x + 5.

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The equation ŷ = -3x + 15 best fits the given data sets.

The word linear function in mathematics refers to two separate but related concepts: A linear function in calculus and related fields is a function whose graph is a straight line, that is, a polynomial function of degree zero or one.

The linear function equation that best fits the data set is likely to be the one that minimizes the differences (or residuals) between the observed y-values (the data points) and the predicted y-values (calculated from the equation).

To find this equation, you can use the method of least squares, which involves finding the line that minimizes the sum of the squared residuals.

In this case, the equation ŷ = -3x + 15 minimizes the sum of the squared residuals and is therefore the best fit for the data set.

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The formula for an exponential function is y = abx, where an is the value of y at x = 0 and b is the growth factor over each unit of time.

Consider the connection to be a function if each input value results in just one output value. Do not classify the relationship as a function if any input value results in two or more outputs.

Simple linear regression uses the equation Y = a + bX to connect X and Y. Both quantify the link between two numerical variables, including its intensity and direction.

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Y = abx is the equation for an exponential function, where b is the growth factor per unit of time and an is the value of y at x = 0.

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Step-by-step explanation:

The system of linear equations can be solved using elimination method or substitution method.

Here's the solution using elimination method:

Add the two equations to eliminate the y variable:

(7y + 10x - 8) + (2y - 5x - 18) = 0 + 0

9y + 5x - 26 = 0

Solve for y:

9y = 26 - 5x

y = (26 - 5x) / 9

Substitute this expression back into either of the original equations to solve for x:

7y + 10x - 8 = 0

7((26 - 5x) / 9) + 10x - 8 = 0

26 - 5x + 70x - 56 = 0

65x - 32 = 0

Solve for x:

65x = 32

x = 32/65

Finally, substitute the value of x back into the expression for y to find the value of y:

y = (26 - 5x) / 9

y = (26 - 5(32/65)) / 9

y = (26 - 160/65) / 9

y = (26 - 8/3) / 9

y = (26 - 8/3) / 9

y = (26 - 8/3) / 9

y = 18/9 - 8/3

y = (18 - 24) / 9

y = -6/9

The solution to the system of linear equations is:

x = 32/65

y = -6/9

Answer:

The probability that the individual has the disease is 1/500

Step-by-step explanation:

i found the fraction of 1 in 500 which is 1/500, hope this helps :)

The dimensions of a scale drawing of a rectangular flag that is 40 centimeters by 72 centimeters using the scale 1:8 is 4 cm by 7.2 cm. Option C.

This is because a 1:8 scale means that for every actual unit of length, the corresponding length on the scale drawing is 8 times smaller.

Therefore, in order to find the dimensions of the scaled drawing of the flag, we must divide the actual dimensions (40 cm by 72 cm) by 8. The result is 4 cm by 7.2 cm.

It is important to make sure that you use the correct scale when attempting to determine the dimensions of a scaled drawing. If you use a different scale than the one intended, your result will be incorrect.

For example, if you use a 1:4 scale instead of a 1:8 scale, you will end up with a scaled drawing that has dimensions of 20 cm by 36 cm, which is double the correct answer.

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The probability that the student drinks soda, given that they drink coffee, is 0.25.

Let's designate the proportion of students who regularly consume soda as "S," those who frequently consume coffee as "C," and those who regularly consume both as "B."

Since 40% of students frequently consume soda, there are 0.4S kids who do the same.

Additionally, there are 0.3S students who consume coffee because 30% of students do it frequently.

Additionally, since 10% of students consume both beverages, there are 0.1S students who also consume soda and coffee.

Students in the class S = 0.4S + 0.1S = 0.5S either drink soda or both.

The pupils in C = 0.3S + 0.1S = 0.4S either consume coffee or both.

So, given that the student drinks coffee, the probability of drinking soda is:

P(soda | coffee) = P(soda and coffee) / P(coffee)

                          = 0.1S / 0.4S

                          = 0.25.

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The values of z1 and z2 that will satisfy this equation are z1 = −8 and z2 = 6 and the vectors (2, −1, 3), (1, 2, 2), and (−4, −8, 6) do not span R3.

To find these values, we need to understand that for any three vectors to span R3, they must be linearly independent.

This means that none of the vectors can be expressed as a linear combination of the other two vectors.

We can start by finding the determinant of the matrix formed by the three vectors. If the determinant is not equal to 0, then the vectors are linearly independent and span R3.

However, if the determinant is equal to 0, then the vectors are linearly dependent and do not span R3.

Let's consider the matrix formed by the three vectors:

[tex]= > \begin{bmatrix}2 & 1 & -4 \\-1 & 2 & z1 \\3 & 2 & z2\end{bmatrix}[/tex]

The determinant of this matrix is equal to:

=> 2 * (2 * z2 - 2 * z1) - (-1) * (1 * z2 - 2 * -4) + 3 * (1 * z1 - 2 * -4)

=> 2z2 - 2z1 + 7z1 + 24 - 2z2 + 8z1 - 24

=> 9z1 + 2z2 - 24

So, the vectors will not span R3 if 9z1 + 2z2 - 24 = 0.

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The solutions of  Ax = 0 in parametric vector form, where A is a row equivalent to the given matrix are : x_1 = 2x_3 + 2x_2,x_2 = x_2 + x_3,x_3 = x_3,x_4 = 2x_3 + 6x_2,x_5 = -3x_3 - 6x_2,x_6 = -4x_3 - 2x_2

The given matrix is row equivalent, which means that it can be reduced to row echelon form using elementary row operations. To solve for the parametric vector, we start by performing the same operations to the identity matrix. First, we divide the first row by 2 to get the leading coefficient of 1 on the leftmost column. Then, we add the first row to the second row, and the third row to the fourth row to eliminate the elements below the leading coefficients.

Finally, we multiply the first row by -4 and add it to the third row to get the leading coefficient of 1 on the third column. After performing the same operations on the identity matrix, we get the parametric vector x_2 + x_3. This means that x_1 = 2x_3 + 2x_2, x_2 = x_2 + x_3, x_3 = x_3, x_4 = 2x_3 + 6x_2, x_5 = -3x_3 - 6x_2, and x_6 = -4x_3 - 2x_2. Essentially, the parametric vector is the sum of the two columns of the identity matrix that correspond to the two leading coefficients in the row echelon form of the original matrix.

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The fraction of the given equation would be 2/3.

locating the Original number.

The outcome is one less than the original number when a two-digit number with its digits reversed is subtracted from the same number. The number itself can be obtained by adding three times the tens digit and four times the units digit of the original integer.

Suppose that x is the initial or positive number.

(x - 4/7)* 7 = x

7(x) - 7(4/7) = x

7x - 4 = x

7x-x = 4

6x = 4

x = 4/6 = 2/3

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expression by 8 in the third case, giving us 12*(-7)*8 = -672. Finally, we divide the expression by g(x) to find the fourth limit, giving us 12/(-7) = -1.714.

a. limx→3[f(x)g(x)] = limx→3[12*(-7)] = -84

b. limx→3[3f(x)g(x)] = limx→3[3*12*(-7)] = -252

c. limx→3[f(x) 8g(x)] = limx→3[12*(-7)*8] = -672

d. limx→3[f(x)/g(x)] = limx→3[12/(-7)] = -1.714

The given limits are limx→3f(x)=12 and limx→3g(x)=−7. We can calculate the following limits by substituting x=3 in the given expressions: limx→3[f(x)g(x)] = -84, limx→3[3f(x)g(x)] = -252, limx→3[f(x) 8g(x)] = -672 and limx→3[f(x)/g(x)] = -1.714. To find these limits, we first multiply the two expressions, f(x) and g(x). This gives us 12*(-7) = -84 in the first case. In the second case, we multiply this expression by 3, giving us 3*12*(-7) = -252. We then multiply this expression by 8 in the third case, giving us 12*(-7)*8 = -672. Finally, we divide the expression by g(x) to find the fourth limit, giving us 12/(-7) = -1.714.

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There are six orange marbles for every one green marble in the bag.

Step 1: Understand the question.

The question asks us to determine which statement must be true about a bag of colored marbles with a ratio of orange to green marbles of 6:1.

Step 2: Determine the ratio of orange to green marbles.

The ratio of orange to green marbles is 6:1, which means that for every one green marble, there are six orange marbles.

Step 3: Determine the statement that must be true.

Therefore, the statement that must be true about this bag of marbles is that there are six orange marbles for every one green marble in the bag.

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The multiplication rule is used to calculate joint probability.

Joint probability is the probability of two events happening simultaneously. The multiplication rule states that the probability of two independent events happening together is equal to the product of their individual probabilities.

The formula can be expressed as: P(A and B) = P(A) x P(B). For example, if the probability of event A is 0.3 and the probability of event B is 0.4, then the joint probability of both events happening together is 0.3 x 0.4 = 0.12. The multiplication rule is only applicable for independent events, meaning that the occurrence of one event does not affect the probability of the other event.

When events are dependent, the calculation of joint probability is more complicated and may involve conditional probability.

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y=x+1 and y=x-5 are the equations of the lines in the given graph.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

Considering the two lines are parallel, they both have the same slope.

let m be the slope of the two lines:

y=mx+y₀

y=mx+y₁

y₀, y ₁ are the value on y axis where the two lines cross the axis.

Because the lines are parallel, there exists no point that lies on both lines, therefore the system has 0 solution.

Hence, y=x+1 and y=x-5 are the equations of the lines in the given graph.

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The transformation of polar coordinate into rectangular coordinate is r sec (theta) = 5 ⇒ x^2 - 5x + y^2.

Two real number lines that intersect at a right angle make up the rectangular coordinate system. The x-axis refers to the horizontal number line, and the y-axis to the vertical number line. Each point on this plane is connected to an ordered pair of real numbers by means of these two number lines, which constitute a flat surface known as a plane (x, y). The x-coordinate is the first number, while the y-coordinate is the second number.

Given that the polar equation is r sec (theta) = 5.

We can write the equation as follows:

r = 5 cos(theta)

Multiply both the sides of the equation with r:

r^2 = 5 cos(theta) r

We know that the value of r^2 = x^2 + y^2 and the value of cos(theta) r = x.

Substituting the values we have:

x^2 + y^2 = 5x

x^2 - 5x + y^2

Hence, the transformation of polar coordinate into rectangular coordinate is r sec (theta) = 5 ⇒ x^2 - 5x + y^2.

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To solve a series of linear equations by graphing them:

1. Visualize the initial equation.

2. Using the same rectangular coordinate system, graph the second equation.

In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way.

The relationships between two or more items are frequently represented by the points on a graph.

To develop a graph is to make a diagram that depicts the relationship between two or more objects.

Make a sequence of bars on graph paper as an example of a graph. YourDictionary, to express or give the form of using a graph.

To graph a set of linear equations and solve them:

1. Visualize the initial equation.

2. Using the same rectangular coordinate system, graph the second equation.

3. Establish if the lines are parallel, intersect, or are one and the same.

4. Determine the system's remedy. Find the intersection if the lines do indeed meet.

Therefore, to solve a series of linear equations by graphing them:

1. Visualize the initial equation.

2. Using the same rectangular coordinate system, graph the second equation.

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For given functions, f(g(4)) = 2, f(f(8)) = ∛2 and f(g(x)) = ∛ ( x² - 8 ).

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range and a co-domain. The usual way to refer to a function is as f(x), where x is the input. A function is typically represented as y = f. (x).

In math, various function types exist. Among the crucial kinds are:

When there is a mapping for a range for each domain between two sets, this is known as an injective function or one to one function.

When more than one element is mapped from domain to range, the function is said to be surjective or to be an onto function.

a polynomial function is a function made by of polynomials

Now,

For functions f(x) = ∛ x and g(x) = x²-8

f(g(x)) = ∛ (x²-8)

f(f(x)) = ∛ ∛ x

g(f(x)) = ( ∛ x ) ² - 8

Therefore,

f(g(4))=∛4²-8= ∛16 - 8

= ∛8 = 2

f(f(8)) = ∛ ∛ 8 = ∛2

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Right function are

f(x)=∛x and g(x)=x^2-8

the correct sample space for the gumball in her bag is option (D) Sample space = lemon-lime, lemon-lime, watermelon, watermelon, watermelon, grape, grape, grape, grape, grape

The sample space S of a random experiment is defined as the set of all possible outcomes of an experiment. In a random experiment, the outcomes, also known as sample points, are mutually exclusive

Given, Julia had a bag filled with gumballs. There were 1 lemon-lime, 2 watermelon, and 3 grape gumballs.

The number of lemon limes in the bag = 2 lemon-lime

Number of watermelons in the bag = 3 watermelon

Number of grape gumballs in the bag = 5 grape gumball

Sample space is the set of all the possible outcomes of the experiment

Here there are 2 lemon-lime, 3 watermelons, and 5 grape gumball

Hence, if Julia had a bag filled with gumballs and there were 2 lemon-lime, 3 watermelon, and 5 grape gumballs, then the correct sample space for the gumball in her bag is an option (D) Sample space = lemon-lime, lemon-lime, watermelon, watermelon, watermelon, grape, grape, grape, grape, grape

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watermelon,lemon lime,lemon lime,grape,grape,grape