ou are tasked to perform a linear regression using the least-squares method on the following (x,v) data points: (6,7) (8,9) (13,17) From the list of answers, pick the point that will be part of the regression line Hint: Find the equation of the line (slope, intercept) as you did in the regression assignment: Then for a (X1, Y1) given below; replace the value of X in the equation with the value of X1, and find out if you get the value of Y1. If you do (meaning the equivalence is true), that point is part of the regression line: (0,01) (9.11) (6,7)
(8,9)

Answer:

45c-20c²

Step-by-step explanation:

You just multiply the number outside the bracets with the numbers inside.

5c×9= 45c

5c×-4c= -20c²

So the answer is 45c-20c²

Which is option 'B'

Question: Darby has a $50 gift card to spend at a coffee shop. Each cup of coffee is $2.40. Write and solve an inequality to determine how many cups of coffee she can buy so she has at least $8 left to purchase an insulated mug.

To make an equation we need to do $50-$8 to see how much money we have left to spend on coffee after buying the mug which is $42

42 divided by 2.4 = 17.5 but since you cant buy half a coffee you’d get 17 with $1.2o left over

A way to write this equation is 2.4C + 8 = 50

C acts as a variable to represent the number of cups of coffee you can get while 8 just stands for the one insulated mug you want

hope this helps :D

Answer: 2.4C + 8 = 50

This year 71, 274 ounce cream used.

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

A French restaurant used 203,640 ounces of cream last year.

This, year 65% less cream used.

So, this year the amount of cream used

= 203640 - 203640 x 65%

= 203640 - 203640 x 0.65

= 203640 - 132366

= 71274 ounce

Hence, 71274 ounce cream used this year.

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The solution of this equation is given by x = -10 ( option A)

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation. as in 3x + 5 Equals 15, for instance. Equations come in a variety of forms, including linear, quadratic, cubic, and others. In this tutorial, let's study more about math equations.

The equation is

2x - 10 = 3x

⇒ x = -10

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The solution to the equation -3x - 6 = -4x + 5 is x = 11.

What is equation?

An equation is a mathematical statement that uses an equals sign (=) to show that two expressions have the same value.

To solve for x in the equation -3x - 6 = -4x + 5, we need to isolate the variable x on one side of the equation. We can do this by adding 4x to both sides of the equation to eliminate the negative 4x term on the right-hand side:

-3x - 6 + 4x = -4x + 5 + 4x

Simplifying the left-hand side by combining like terms, we get:

x - 6 = 5

Finally, to isolate x, we add 6 to both sides of the equation:

x - 6 + 6 = 5 + 6

Simplifying the left-hand side and the right-hand side, we get:

x = 11

Therefore, the solution to the equation -3x - 6 = -4x + 5 is x = 11.

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Answer:

53.333

Step-by-step explanation:

400/15 x 2 = 53.333

The original cost for each concert ticket is given as follows:

$34.

The original cost for each concert ticket is obtained applying the proportions in the context of this problem.

The fee for a single ticket is divided as follows:

Hence the proportional relationship that models the cost of purchasing x tickets is given as follows:

y = (5 + n)x.

Alex purchased 3 concert tickets, meaning that x = 3, for a total of $117, meaning that y = 117, hence the original cost n is obtained as follows:

117 = (5 + n) x 3

Dividing by 3 on both sides, we have that:

5 + n = 39

n = 39 - 5

n = $34.

Which is the original cost for each concert ticket.

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The solution of the inequality in set-builder notation is {p I p ≥ 1}.

The correct option is A.

In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to each other. To solve the inequality, you may multiply or divide each side by the same positive number, add the same amount to each side, take the same amount away from each side, and more. You must flip the inequality sign if you multiply or divide either side by a negative number.

Given:

An inequality,

2(3p-11) ≥ -16

Solving the parenthesis,

6p-22 ≥ -16

6p  ≥ -16 + 22

6p  ≥ 6

p ≥ 1

Therefore, the solution is {p I p ≥ 1}.

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Answer:

4 pencils.

Step-by-step explanation:

The ratio of pencils to pens in the original package is 10:4, which means that for every 4 pens, there are 10 pencils. To find the number of pencils in the larger package, we can use this same ratio.

If the large package has 10 pens, we can set up the proportion:

x/10 = 10/4

Where x is the number of pencils in the large package. To solve for x, we can cross-multiply:

10 * 4 = x * 10

40 = x*10

x = 40/10

x = 4

So the large package contains 4 pencils.

The number of people at the graduation party would be 57.5, so the quantity of food required for them is Food item A  = 65 piece, Food item B  = 14(1/6) pounds and Food item C  = 4(3/8) pounds.

What is fraction?

In mathematics, a fraction is represented by a number that identifies a portion of a whole. A fraction is a component or section taken from a whole, which can be any number, a certain amount, or an object.

Number of guests in the graduation party, a = 40

Number of drop in guests at the graduation party,  b = 35

Now, drop-in guests are counted as half a guest, so the number becomes b = 35/2.

Total number of guests = a + b

Total number of guests = 40 + 35/2

Total number of guests = (80+35)/2

Total number of guests = 115/2

Total number of guests = 57(1/2)...

The table shows amount of food -

Food item A 26 piece, Food item B  5(2/3) pounds and Food item C  1(3/4) pounds.

Also, it recommends amount of food to order for 23 party guests.

So, number of groups having 23 people -

= 2(23) + 11.5 group

= 2(23) + 1(1/2) group...

Therefore, there should be 2(1/2) times quantity of food mentioned in the table.

For Food item A  - 26 × 2(1/2)

= 26 × 5/2

= 65 piece

For Food item B  - 5(2/3) × 2(1/2)

= 17/3 × 5/2

= 85/6

= 14(1/6) pounds...

For Food item C  - 1(3/4) × 2(1/2)

= 7/4 × 5/2

= 35/8

= 4(3/8) pounds...

Therefore, the quantity of food for party should be Food item A  = 65 piece, Food item B  = 14(1/6) pounds and Food item C  = 4(3/8) pounds.

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The algebraic expression for "the result of subtracting j from 13" can be written as 13 - j.

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Answer :-77. ✅

Step-by-step explanation:

To find the quotient of -231 and 3, we divide -231 by 3.

-231 ÷ 3 = -77

The quotient of -231 and 3 is ✅

The value of the variable 'x' is 6. Then the length of the line segment PT will be 24 units.

A line segment in mathematics has two different points on it that define its boundaries. A line segment is sometimes referred to as a section of a path that joins two places.

The information is given below.

PT = 3x + 6 and TQ = 5x - 6

T is the midpoint of PQ. Then the equation is given as,

PT = TQ

3x + 6 = 5x - 6

2x = 12

x = 6

Then the length of the line segment PT will be given as,

PT = 3(6) + 6

PT = 18 + 6

PT = 24 units

The value of the variable 'x' is 6. Then the length of the line segment PT will be 24 units.

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The better car is car A and Sam would pay $70.

We can see that we can only be able to judge the better car by the way that the gas is able to consume fuel. We can now see that the cars are two and we have the gas consumption of each as;

For car A = 75 miles / 5 gallons = 15 miles/gallon

For car B = 240 miles/ 20 gallons = 12 miles/gallon

As such car A is the better car.

Miles to be covered = 300 miles

If 1 gallon takes 15 miles

x galloons takes 300 miles

x = 20 gallons

If 14 gallons cost $49.42

1 gallon costs  49.42/14

=$3.5

Sam would pay; $3.5 * 20

= $70

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On solving the provided question, we can say that from the given graph, it is shown that it is a starlight line so the equation that represents is x = y => x-y = 0

Mathematicians use graphs to logically convey facts or values using the visual representations or charts. A graph point will typically reflect a relationship between two or more things. Nodes, or vertices, and edges make form a graph, a non-linear data structure. Glue together the nodes, often referred to as vertices. This graph has vertices V=1, 2, 3, 5, and edges E=1, 2, 1, 3, 2, 4, and (2.5), (3.5). (4.5). Statistical charts (bar charts, pie charts, line charts, etc.) graphical representations of exponential growth. a logarithmic graph in the shape of a triangle

here, from the given graph

it is shown that it is a starlight line

so the equation that represents is x = y

x-y = 0

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Equation   that represents Chris's total income = ($5.75+$17.5) X, where X is the number of hours he works in a day.

Equation is a mathematical statement that expresses the equality between two or more expressions.

Equation are different types such as equation with one variables and equation with two variables. The equation is used to determine the unknown values.

Assume, Chris works X hours in a day.

He earns $5.75 per hour.

during his work time he serves two groups.

The average tip per group = $8.75

tips earned from two groups = $8.75 × 2 = $17.5

Outputs of Chris total income if he works total X hours in a day

= ($5.75+$17.5) X

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The scale factor of the model to the real-life player is 6:76. This can be read as 6/76 or 0.0789 or 0.079(approximately)

The scale factor is a ratio that compares the size of the model to the size of the real-life object. In this case, the scale factor of 6:76 tells us that for every 76 inches of the real-life player, the model is only 6 inches. In other words, the model is 6/76 or approximately 0.0789 times smaller than the real-life player.

In general, a scale factor is a number used to multiply all the dimensions of an object to get a corresponding model or representation of that object, where the ratio of the corresponding dimensions between the real-life object and the model is represented by the scale factor.

It should be noted that the scale factor can also be represented in fraction or decimal form, but the colon notation gives a more meaningful representation of the comparison of the size between the model and the real-life object.

Answer: The scale factor for the basketball player to the model is 16 inches to 1 inch

Step-by-step explanation:

From the given tables, Tables 2 and 3 will show the proportional relationship between x and y.

Two ratios or two fractions are comparable according to the equation of proportion. In other words, when two ratios are equal, they are said to be proportionate.

Let x and y be proportional relation

=> x ∝ y

=> x = ky    

=> x/y = k    [ where 'k' proportionality constant ]

Here we have

Table 1

x   2   3   4    5  

y   7   9   11   13    

=>  [tex]\frac{x}{y} = \frac{3}{7} = \frac{3}{9}[/tex]    [ which is not true ]

Hence,

Table 1 not shows any proportional relationship between x and y

Table 2

x  3   7.5  15  25

y  1    2.5  4    6    

=>  [tex]\frac{x}{y} = \frac{3}{1} = \frac{7.5}{2.5} = 3[/tex]  [ which is true ]

Hence, Table 2, shows a proportional relationship between x and y

Table 3

x   1      2     7     8

y  0.5    1    3.5   4    

=> [tex]\frac{x}{y} = \frac{1}{0.5} = \frac{2}{1} = 2[/tex]  [ Which is true ]

Hence, Table 3 shows a proportional relationship between x and y

Table 4

x    3    6    8   10  

y    12   15  18  20  

=> [tex]\frac{x}{y} = \frac{3}{12} = \frac{6}{15}[/tex]   [ Which is not true ]  

Hence, Table 4 not shows a proportional relationship between x and y

Therefore,

From the given tables, Tables 2 and 3 will show the proportional relationship between x and y.

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Answer:

See attached graph.

Step-by-step explanation:

Given equation:

[tex]y+4=\dfrac{2}{5}(x-3)[/tex]

Expand the right side of the equation:

[tex]\implies y+4=\dfrac{2}{5}x-\dfrac{6}{5}[/tex]

Subtract 4 from both sides of the equation:

[tex]\implies y=\dfrac{2}{5}x-\dfrac{26}{5}[/tex]

Substitute x = 3 into the equation:

[tex]\implies y=\dfrac{2}{5}(3)-\dfrac{26}{5}[/tex]

[tex]\implies y=\dfrac{6}{5}-\dfrac{26}{5}[/tex]

[tex]\implies y=-\dfrac{20}{5}[/tex]

[tex]\implies y=-4[/tex]

Substitute x = -2 into the equation:

[tex]\implies y=\dfrac{2}{5}(-2)-\dfrac{26}{5}[/tex]

[tex]\implies y=-\dfrac{4}{5}-\dfrac{26}{5}[/tex]

[tex]\implies y=-\dfrac{30}{5}[/tex]

[tex]\implies y=-6[/tex]

To graph the given equation, plot the two found points on the given coordinate plane:

Draw a straight line through the points.

(See attachment).

Answer: X=-6

Step-by-step explanation: Since both logarithms have a base of 9, we can simply get rid of them. We could also do 9^(log9(8-2x))=9^(log9(-3x+2)). This would eliminate the logarithms.

Now we are just left with a simple algebraic equation: 8-2x=-3x+2.

We add 3x on both sides to get 8+x=2. We subtract 8 on both sides to get x=-6. There is no need to create a domain for the values of x since this is not an inequality problem.

Answer:

From the table, we can see that the y value is always -7, regardless of the x value. This means that the y-intercept of the function is -7.

Step-by-step explanation:

From the table, we can see that the y value is always -7, regardless of the x value. This means that the y-intercept of the function is -7.

Therefore, the linear function that relates y to x, using this table, is:

y = -7

It's a constant function, no matter what the x value is, the y value is always -7.

Since this system of linear inequalities can be used to find the possible heights, in inches, of Darius, d, and his brother William, w, the three statements which must be true about their heights include all of the following:

A. Darius is at least 36 inches tall.

C. William’s height is less than 68 inches.

F. Darius is no more than 4 inches taller than twice William’s height.

In order to write a system of linear inequalities to describe this situation, we would assign variables to the possible heights, in inches, for Darius and Williams, and then translate the word problem into algebraic equation as follows:

Next, we would interpret the given system of linear inequalities as follows;

d ≥ 36 ⇒ "Darius is at least 36 inches tall." because of the greater than or equal to (≥) inequality symbol.

w < 68 ⇒ "William’s height is less than 68 inches." because of the less than (<) to inequality symbol.

Additionally, d ≤ 4 + 2w ⇒ "Darius is no more than 4 inches taller than twice William’s height." because of the less than or equal to (≤) inequality symbol.

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The total income tax imposed on $47,000 is $12,800

The term "income tax" describes a class of taxes that governments impose on income generated by people and businesses within their territorial jurisdiction.

Taxpayers are required by law to submit an income tax return each year in order to determine their tax obligations.

Income taxes are the main source of funding for governments. They are employed to fund public services, provide residents with goods, and settle debts owing to the government.

A number of states and municipal governments, in addition to the federal government, also require payment of income tax. The Internal Revenue Service is responsible for collecting taxes and enforcing the tax laws in the United States (IRS).

Regarding credits, deductions, and other forms of taxable and reportable income.

Firstly let us break the income tax as per the given condition

Income = 47,000 = 30,000 + 17,000

hence 20% tax is imposed on $30,000 and 40% on $17,000

Total income tax = 20% of 30000 + 40% of 17000

Total income tax = 6000 + 6800 = 12800

hence,  The total income tax imposed on $47,000 is $12,800.

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Answer:

An equivalent expression for (52 • 34)3 would be (52 • 34) • (52 • 34) • (52 • 34)

Another way to express this is (52)3 • (34)3

So it can also be written as (5^32^3) * (3^44^3)

It can be also expressed as 125 * (81*64)

This expression is the result of multiplying three times the product of 5^2 and 3^4

For expression 4x=8x-1, x will be 1/4.

what are expressions?

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between. The mathematical operators can be of addition, subtraction, multiplication, or division. For example, x + y is an expression, where x and y are terms having an addition operator in between. In math, there are two types of expressions, numerical expressions - that contain only numbers; and algebraic expressions- that contain both numbers and variables.

e.g. A number is 6 more than half the other number, and the other number is x. This statement is written as x/2 + 6 in a mathematical expression. Mathematical expressions are used to solve complicated puzzles.

Now,

As given expression is 4x=8x-1

8x-4x=1

4x=1

x=1/4

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The number of elements in [tex]A^c[/tex] is zero.

A set is a collection of items where there are operations such as:

Union of sets, the intersection of sets, and the complement of sets.

We have,

U = universal set

This includes all values.

[tex]A^c[/tex] = complement of set A.

This means,

All the elements of U except the elements of A.

[tex]A^c[/tex] = U - A

Now,

If A = U,

[tex]A^c[/tex] = U - U = 0

Thus,

There are no elements in [tex]A^c[/tex].

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Probability is the possibility that something will occur. The probability is computed by dividing the total number of outcomes by the number of possible ways the event could occur.

How do I calculate probability?

Adding the aforementioned figures in the third column yields a total of 2,598,960, which is the total number of potential hands.

The likelihood that something will happen is known as probability. The number of possible outcomes is divided by the total number of possible outcomes to determine probability.

The 36 numbered cards go from 2 through 10, and there are 12 face cards (Kings, queens, and jacks). There will be 51 total cards left when the first face card is pulled, leaving 11 face cards.

Each of the four suits—Spades, Hearts, Diamonds, and Clubs—has 52 cards in a "normal" deck of playing cards. The 13 cards in each suit are Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, and King.

Here's one possible solution:

Let's start by assigning the numbers to the 5 cards:

Heart: 1

Spade: 2

Club: 7

Diamond: 8

Spade: 9

The sum of the numbers on the even-numbered cards (2, 8) is 10, which is equal to the sum of the numbers on the odd numbered cards (1, 7, 9). The sum of the black cards (7, 9) is 16, which is equal to the sum of the spades (2, 9). The sum of the red cards (1, 8) is 9, which is equal to 10.

So, the 5 cards are:

1 of Heart

2 of Spade

7 of Club

8 of Diamond

9 of Spade

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Answer:

A) x= -4

Step-by-step explanation:

-7x+3x=7+9

-4x= 16

x= 16÷ -4 = -4

Answer:

Should be Ones: 1, Tenths: 2, Hundredths: 5

Step-by-step explanation: