1. Which method would be the best to solve the following system of equations?
Graphing
Substitution
None of these methods will work.
Elimination
(3x + 7y=-19
-3x+4y= 12

To solve the handshake problem for five students sitting around a table, we need to count the number of unique handshakes that can occur between them. We can start by picking one student as the first handshaker, who then shakes hands with the four other students. This gives us a total of four handshakes.

Next, we can choose a different student as the first handshaker and repeat the process. This gives us another four handshakes, but we have to be careful not to count any handshakes twice.

For example, if Student A shakes hands with Student B first, and then we choose Student B as the first handshaker, we will count the handshake between A and B twice.

To avoid this, we can divide our total count of handshakes by two. This is because each handshake involves two people, so we will count each handshake twice if we simply multiply the number of people by the number of potential handshakes (i.e., 5 x 4 = 20 potential handshakes).

Therefore, the number of unique handshakes between five students sitting around a table is:

(5 x 4) / 2 = 10

So there are 10 handshakes that occur when five students shake hands with each other exactly once

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Answer:

1 < x < 15

Step-by-step explanation:

To find the range of values for the third side, you must subtract and add the other known sides. The lower limit for the range of the third side will be 8 - 7, which equals 1. The upper limit for the range of the third side will be 8 + 7, which equals 15

Answer:

1<x<15

Step-by-step explanation:

Triangle inequalities state that the sum of two sides of any triangle must be less than the other. This is true for all three sides of the triangle.

In this case, we know two sides. Let us set a variable for the third, as x.

So the sum of 8 and 7 has to be bigger than x:

8+7>x

15>x

8 and x have to be greater than 7:

8 +x >7

x>-1

And 7 and x have to be greater than 8:

7 + x>8

x>1

Looking at the inequalities between x, we must choose the most inclusive ones. x>-1, but 1 is within that, so we can go with x>1. x<15 is a statement that cannot change because it is the only end value given. Therefore, the answer is 1<x<15

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Pablo's monthly payments are $760.76

If Pablo pays the monthly fee each month, he will pay a 3.48% interest rate.

Monthly payments refer to the amount of money that is paid on a regular basis, typically every month, to repay a debt or loan over a specified period of time. The monthly payment is usually calculated based on the total amount borrowed, the interest rate, and the repayment period

How to solve

Given that:

Loan amount = $1400

Interest rate r = 5.7%

Time n = 5 years

To solve for monthly payment

using the formula

1400 * [tex]\frac{0.0157(1 +0.0517)^6^0}{(1 + 0.0517)^6^0 -1}[/tex]

= 760.76.

Pablo's monthly payments is $760.76

The total interest to be paid:

A = P(1+rt)

1400= 760.76 + 3803.8

= 3.48

Thus, if Pablo pays the monthly fee each month, he will pay 3.48% interest rate.

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Answer:

5: 52 m

6: 600 inches

7: 352 yards

8: 43 cm

Step-by-step explanation:

5: 5x5=25. 4x3/2=6. 5x3=15. 4x3/2=6

25+6+15+6=52

6: It is a cube that has 10 length sides. Each side's area is 10x10=100

There are 6 sides, so 6x100=600

7: Top and bottom: 8x8=64 (There are 2, one is top, one is bottom)

Sides (4 of them): 7x8=56

2(64)+4(56)=

128+224=

352

8: 4x3=12. 5x3/2=7.5. 5x3/2=7.5. 4x4=16.

12+7.5+7.5+16=

43 cm

Pls mark me brainliest if it helps :), have a very nice day/night!

Answer:

1. 254

2.100.8

Step-by-step explanation:

The irrational number between 5,25 and 5,26 is 2.5135145:

The irrational number between 5,25 and 5,26

2.5135145...

The number is non-terminating and non-recurring. Hence, it is an irrational number.

A real number that cannot be expressed as a simple fraction is called an irrational number.

It is impossible to express in terms of a ratio.

If N is irrational, it is not equal to p/q, where p and q are integers and q is not equal to 0.

Example: √2, √3, √5, √11, √21, π(Pi) are all irrational.

An irrational number is a real number that cannot be expressed as a fraction of two integers. In other words, it is a number that cannot be written as a simple fraction or a ratio of integers. Irrational numbers are decimal numbers that go on forever without repeating. Some famous examples of irrational numbers include pi (3.14159265...) and the square root of 2 (1.41421356...).

Irrational numbers have some interesting properties. For example, they are non-repeating and non-terminating, which means that their decimal expansions never repeat and never come to an end. This makes them difficult to work with, but also makes them important in mathematics and science. Irrational numbers are used in a variety of mathematical and scientific applications, including geometry, physics, and cryptography.

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f(x) can be factored into f(x) = 2(x + 5)(x + 3/2)(x - 3)(x - 5/2).

To find the real zeroes of f(x) = 2x^(4) + 17x^(3) + 35x^(2) - 9x - 45 using synthetic division, the Rational Root Theorem, and the Remainder Theorem, we need to follow these steps:

1. Using the Rational Root Theorem, we can find the possible rational roots of f(x) by taking the factors of the constant term (-45) and dividing them by the factors of the leading coefficient (2). The possible rational roots are:

±1, ±3, ±5, ±9, ±15, ±45, ±1/2, ±3/2, ±5/2, ±9/2, ±15/2, and ±45/2.

2. Next, we will use synthetic division to test these possible roots and find the real zeroes of f(x). We will start with the smallest possible root, -45/2, and divide f(x) by (x + 45/2) using synthetic division. The result is a polynomial of one degree less than f(x).

3. We will then use the Remainder Theorem to check if the remainder of the synthetic division is 0. If the remainder is 0, then -45/2 is a real zero of f(x) and we can use the Factor Theorem to factor f(x) into (x + 45/2)(2x^(3) - 8x^(2) - 80x + 90).

4. We will repeat steps 2 and 3 with the remaining possible rational roots until we find all the real zeroes of f(x).

5. Once we have found all the real zeroes of f(x), we can use the Factor Theorem to factor f(x) into the product of linear factors and a constant. The real zeroes of f(x) are -5, -3/2, 3, and 5/2.

Therefore, f(x) can be factored into f(x) = 2(x + 5)(x + 3/2)(x - 3)(x - 5/2).

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We fοund the inequality tο be  14 -0.6x ≤ 1.5 and sοlving this we fοund that the warning lights cοme οn after using fοr apprοximately 21 days.

In mathematics, inequalities specify the cοnnectiοn between twο nοn-equal numbers. Equal dοes nοt imply inequality. Typically, we use the "nοt equal sign" tο indicate that twο values are nοt equal. Hοwever several inequalities are utilised tο cοmpare the numbers, whether it is less than οr higher than. An inequality symbοl has nοn-equal expressiοns οn bοth sides. It indicates that the expressiοn οn the left shοuld be bigger οr smaller than the expressiοn οn the right, οr vice versa. Literal inequalities are relatiοnships between twο algebraic expressiοns that are expressed using inequality symbοls.

Given,

 The gallοns οf fuel that the car hοlds = 14 gallοns

Amοunt οf fuel used each day = 0.6 gallοns

When the remaining fuel is 1.5 gallοns οr less, warning lights cοme οn.

We can write an inequality fοr this situatiοn.

If x is the number οf days the car is used, then the warning lights cοme οn when,

 14 - 0.6x ≤ 1.5

This is the inequality expressiοn.

Sοlving,

12.5 ≤ 0.6x

x ≥ 12.5/0.6

x ≥ 20.8

Therefοre we fοund the inequality tο be 14 -0.6x ≤ 1.5 and sοlving this we fοund that the warning lights cοme οn after using fοr apprοximately 21 days.

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The unit rate of running 2.3 km in 7 minutes is 5.48 metres per second.

Unit rate can be defined as a measure used to represent how many units of one type of quantity corresponds to one unit of anther type of quantity.

Here the distance is given in kilometres (km) which can be converted into metres by multiplying by 1000 as,

2.3 km = 2.3*1000 metres

= 2300 metres

Here the time taken to cover 2.3 km is 7 minutes which can be converted ito seconds by multiplying by 60 as,

7 minutes= 7*60 seconds

= 420 seconds

Hence the unit rate of running 2.3 km in 7 minutes expressed in metre per second is calculated as = 2300 metres / 420 seconds

= 5.4761 metres per second

= 5.48 metres per second (approximately)

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The eigenvalues of matrix A are 11 and -1, and the corresponding eigenvectors are [1, -3, 0] and [1, 0, 0].

Eigenvalues and eigenvectors are important concepts in linear algebra. The eigenvalues of a matrix are the values that satisfy the equation Ax = λx, where A is the matrix, x is the eigenvector, and λ is the eigenvalue. The eigenvectors are the corresponding vectors that satisfy this equation.

To find the eigenvalues and eigenvectors of the matrix A=​2−15​013​00−3​​, we need to follow these steps:

1. Find the characteristic equation of the matrix A by subtracting λ from the diagonal elements and taking the determinant:
|A-λI| = |2-λ -1 5| = (2-λ)(-3-λ) - (-1)(5) = 0
|0 1 3|
|0 0 -3-λ|

2. Solve the characteristic equation to find the eigenvalues:
(2-λ)(-3-λ) - (-1)(5) = 0
-6 + 3λ + 2λ - λ² + 5 = 0
λ² - 5λ - 11 = 0
(λ - 11)(λ + 1) = 0
The eigenvalues are λ = 11 and λ = -1.

3. Find the eigenvectors by substituting the eigenvalues back into the equation Ax = λx and solving for x:
For λ = 11:
(2-11)x₁ - x₂ + 5x₃ = 0
x₂ + 3x₃ = 0
-3x₃ = 0
x = [1, -3, 0]
For λ = -1:
(2+1)x₁ - x₂ + 5x₃ = 0
x₂ + 3x₃ = 0
3x₃ = 0
x = [1, 0, 0]
The eigenvectors are x = [1, -3, 0] and x = [1, 0, 0].

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The length of longer piece of metal rod on division into two pieces is 7.18 meters.

Let the measurement of first piece be x meters. So, the measurement of second piece will be -

Three times = 3x

0.16 meters longer = 3x + 0.16

Total measurement of second piece = 3x + 0.16 meters.

Now, total measurement = measurement of first piece + measurement of second piece

Total measurement = x + 3x + 0.16

9.52 = 4x + 0.16

4x = 9.52 - 0.16

4x = 9.36

x = 9.36/4

x = 2.34 meters

Length of longer piece = 3(2.34) + 0.16

Length of longer piece = 7.18 meters

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(a) The height of the ball when it leaves the child's hand is 3 feet.

(b) The maximum height of the ball is 19 feet.

(c) The ball will strike the ground approximately 33.44 feet from the child.

(a) This is because when x = 0 (the point at which the ball is thrown), the equation simplifies to y = 3.

(b) The maximum height of the ball can be found by finding the vertex of the parabola. The x-coordinate of the vertex is -b/2a, where a = -1/16 and b = 2. So, x = -2/(-1/8) = 16. Plugging this value back into the equation gives us the maximum height: y = -1/16(16)² + 2(16) + 3 = 19 feet.

(c) The ball strikes the ground when y = 0. Setting the equation equal to 0 and solving for x gives us:

0 = -1/16 x² + 2x + 3

Multiplying both sides by 16 to eliminate the fraction gives us:

0 = -x² + 32x + 48 = x² - 32x - 48

Using the quadratic formula, we find that x = (32 ± 8√19)/2 or x ≈ 33.44 and x ≈ -1.44

Taking the positive value, the distance from the child to where the ball strikes the ground is approximately 33.44 feet.

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Let x be the total value of the estate.

According to the problem, the youngest child received 1.25 million and the share of each child is half of the remainder of the estate after the previous child has received their share.

So, the fourth child received 1.25 million, which is half of what the third child received. Therefore, the third child received 2.5 million.

Similarly, the second child received 2 times what the third child received, which is 5 million.

Finally, the first child received 2 times what the second child received, which is 10 million.

Adding up all the shares, we get:

1st child: 10 million

2nd child: 5 million

3rd child: 2.5 million

4th child: 1.25 million

Total: 18.75 million

Therefore, the total value of the estate is 18.75 million, which is closest to option a, 18.25 million.

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Therefore , the solution of the given problem of unitary comes out to be child can purchase 39 roller coaster excursions with 273 ride tickets as a result.

To finish the job using the unitary technique, the expression from this nano section should be multiplied by two. In essence, when a wanted object is present, both the characterised by either a group and the pigment sections are omitted from the unit method. A variable fee of Inr ($1.01), for instance, would be paid for 40 pens. It's conceivable that one nation will have complete control over the strategy used to achieve this. Almost all living things have a unique trait.

Here,

The boy can purchase the following amount of roller coaster rides:

39 trips using 273 ride tickets at 7 tickets each (rounded down to the nearest whole number)

The child can purchase 39 roller coaster excursions with 273 ride tickets as a result.

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The recursive formula for an, the nth term of the sequence is a(n) = a(n - 1) + 2 where a(1) = 2

From the question, we have the following parameters that can be used in our computation:

2, 6, 10, 14, ....

The above definitions imply that we simply add 4 to the previous term to get the current term

Using the above as a guide,

So, we have the following representation

a(n) = a(n - 1) + 2

Hence, the sequence is a(n) = a(n - 1) + 2 where a(1) = 2

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Answer: See attached for the graph. There is an undefined slope and no y-intercept.

Step-by-step explanation:

      See attached for a graph. Since this is only greater than, (>) we will use a dashed line. Then we will shade everything greater than -4.

      The slope of this graph is undefined because this line is straight up and down. If we try to write it as an equation, you end up dividing by zero (which ends up undefined)

      Lastly, there is no y-intercept. Since this line does not cross the y-axis, there is no point of intersection.

The response to the given question would be that Therefore, after equation growing to 174 in 2003, the wolf population in Yellowstone National Park dropped from 150 in 2002 to 118.32 in 2005.

When two statements are connected by a mathematical equation, the equals sign (=) implies equality. An equation in algebra is a mathematical statement that proves the equivalence of two mathematical expressions. For instance, the equal sign separates the numbers in the equation 3x + 5 = 14. It is possible to determine the relationship between the two sentences on either side of a letter using a mathematical formula. The logo for the particular piece of software is frequently the same. as 2x - 4 = 2, for instance.  

beginning with a wolf population of 150 in 2002:

The number of wolves grew by 16% in 2003. We may multiply the initial population by 1.16 (100% + 16% = 116%) to determine the increase:

150 times 1.16 is 174 wolves.

There was a 32% decline in the wolf population between 2003 and 2005. We may multiply the population in 2003 by 0.68 (100% - 32% = 68%) to determine the decline:

174 times 0.68 equals 118.32 wolves (rounded to two decimal places)

Therefore, after growing to 174 in 2003, the wolf population in Yellowstone National Park dropped from 150 in 2002 to 118.32 in 2005.

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In the congruent geometry ,  length of EH is 14 meters .

What is congruent geometry?

In a congruent geometry, the shapes that are so identical. can be superimposed on themselves.

Two objects that are identical in terms of their dimensions and shape are said to be congruent in geometry. Further, two shapes are said to be congruent to one another if they can be turned, flipped, or moved in the same direction.

As a result, two congruent figures that have been drawn on a piece of paper can be cut out and positioned over one another to perfectly match.

Here, The figure shows the design and its photocopy. The ratio of BC: FG is 1:2.

Since the two figures are congruent

BC/FG= AD/EH

1/2 = 7/EH    (from figure AD = 7 )

EH = 2*7

EH = 14 m

Thus, the required length of EH is 14 meters.

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The slope is 3. After 1 second, the car's distance increases by 7 feet.

Mathematically, the slope-intercept form of the equation of a straight line is given by this mathematical expression;

y = mx + c

Where:

Based on the information provided, we have the following equation that represents the relationship between distance and time;

y = 3x + 4

At x = 1 second, the distance is given by;

y = 3(1) + 4

y = 3 + 4

y = 7 feet.

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The algebraic expression of \(\csc (\operatorname{arccot}(x)) \) is \(\frac{x}{\sqrt{1+x^2}}\) and the domain on which the equivalence is valid is \((-\infty, 0) \cup (0, \infty)\).

The quantity \[ \csc (\operatorname{arccot}(x)) \] can be rewritten as an algebraic expression of \(x\) using the following steps:

1. Recall that \(\operatorname{arccot}(x) \) is the inverse function of \(\cot(x) \), which means that \(\cot(\operatorname{arccot}(x)) = x \).

2. Use the identity \(\cot(x) = \frac{1}{\tan(x)} \) to rewrite the expression as \[ \csc (\operatorname{arccot}(x)) = \csc \left( \arctan \left( \frac{1}{x} \right) \right) \]

3. Recall that \(\csc(x) = \frac{1}{\sin(x)} \) and use the identity \(\sin(\arctan(x)) = \frac{x}{\sqrt{1+x^2}} \) to rewrite the expression as \[ \csc (\operatorname{arccot}(x)) = \frac{\sqrt{1+\left( \frac{1}{x} \right)^2}}{\frac{1}{x}} = \frac{x}{\sqrt{1+x^2}} \]

Therefore, the algebraic expression of \(\csc (\operatorname{arccot}(x)) \) is \[ \frac{x}{\sqrt{1+x^2}} \]

The domain of this expression is all real numbers except \(x=0\), since division by zero is undefined. Therefore, the domain on which the equivalence is valid is \(x \neq 0\), or in interval notation, \((-\infty, 0) \cup (0, \infty)\).

In summary, the algebraic expression of \(\csc (\operatorname{arccot}(x)) \) is \(\frac{x}{\sqrt{1+x^2}}\) and the domain on which the equivalence is valid is \((-\infty, 0) \cup (0, \infty)\).

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Answer is 240 centigrams = 2400 milligrams, 240 centigrams = 24 decigrams, 240 centigrams = 0.024 kilograms.

Measurement is the process of quantifying an attribute or property of an object or event using a numerical or quantitative scale. The result of a measurement is a number or value that represents the magnitude or amount of the attribute being measured.

Centigrams, milligrams, decigrams, and kilograms are all units of measurement of mass in the metric system.

1 centigram (cg) = 10 milligrams (mg) in the metric system.

240 centigrams =  10×240 milligrams,

So, 240 centigrams is equal to 2400 milligrams.

1 centigram (cg) = 0.1 decigrams (dg)

240 centigrams =  0.1×240 decigrams

So, 240 centigrams is equal to 24 decigrams.

1 centigram (cg) = 0.0001 kilograms (kg)

240 centigrams =  0.0001×240 kilograms

So, 240 centigrams is equal to 0.024 kilograms.

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Answer:

Jaicee (Jenny?) can spend 25 minutes reading.

Step-by-step explanation:

1 hour is 60 minutes.



Multiply to find

1/3 of 60 minutes.

1/3 × 60

= 60/3

= 20

She spends 20 minutes texting.

Multiply to find 1/4 of 60 minutes.

1/4 × 60

= 60/4

= 15

She spends 15 minutes brushing teeth and putting on pajamas.

Subtract 20 and 15 from 60, to see what's left.



Used up time:

20 + 15

= 35

She used up 35 minutes texting and prepping for bed.

60 - 35

= 25

She has 25 minutes left for reading.

Answer:

1, 4

Step-by-step explanation:

to find the next term in an arithmetic sequence add the common difference d to the previous term.

d = a₂ - a₁ = - 5 - (- 8) = - 5 + 8 = 3

then

a₄ = a₃ + d = - 2 + 3 = 1

a₅ = a₄ + d = 1 + 3 = 4

the next two terms are 1, 4

Answer:

You are 78 years old.

Answer:

Naw bro you're 0

Step-by-step explanation:

The value of x is 10.

Midsegment of a triangle is defined as the line segment joining the midpoints of two sides of a triangle.

Every triangle will have three mid segments.

Given a triangle ABC.

Given the length of the midsegment DE = 5.

By the "Triangle Mid Segment Theorem", any midsegment of a triangle connecting two sides is parallel to the third side and the length is half of the length of the third side.

DE is the mid segment.

AB is the parallel side to DE.

DE = AB / 2

5 = x / 2

x = 10

Hence the length of the third side is 10.

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The line L(t) = (2 - 4t, 3 – 2t, -5 – 4t) is neither parallel nor perpendicular to any of the given planes.

The line L(t) = (2 - 4t, 3 – 2t, -5 – 4t) can be written in parametric form as: x = 2 - 4t, y = 3 - 2t, and z = -5 - 4t. The

direction vector of the line is (-4, -2, -4).

To determine if the line is parallel or perpendicular to a given plane, we can take the dot product of the direction vector of the line and the normal vector of the plane. If the dot product is zero, the line is parallel to the plane. If the dot product is nonzero, the line is neither parallel nor perpendicular to the plane.

For the plane 6x + 3y + 6z = -39, the normal vector is (6, 3, 6). The dot product of the direction vector of the line and the normal vector of the plane is (-4)(6) + (-2)(3) + (-4)(6) = -42. Since the dot product is nonzero, the line is neither parallel nor perpendicular to the plane.

For the plane 8x + 24y - 20z = -8, the normal vector is (8, 24, -20). The dot product of the direction vector of the line and the normal vector of the plane is (-4)(8) + (-2)(24) + (-4)(-20) = 8. Since the dot product is nonzero, the line is neither parallel nor perpendicular to the plane.

For the plane 8x + 4y + 8z = 48, the normal vector is (8, 4, 8). The dot product of the direction vector of the line and the normal vector of the plane is (-4)(8) + (-2)(4) + (-4)(8) = -56. Since the dot product is nonzero, the line is neither parallel nor perpendicular to the plane.

For the plane 52 5y + 3z = -17, the normal vector is (0, 52, 3). The dot product of the direction vector of the line and the normal vector of the plane is (-4)(0) + (-2)(52) + (-4)(3) = -112. Since the dot product is nonzero, the line is neither parallel nor perpendicular to the plane.

Therefore, the line L(t) = (2 - 4t, 3 – 2t, -5 – 4t) is neither parallel nor perpendicular to any of the given planes.

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Answer: The other game companies offer

Step-by-step explanation: Pretty much self-explanatory.

The statement "If the system of a linear equation has the unique solution, then the system is inconsistent." is False since a single solution is an indication that the equations intersect at a specific point, making it consistent.

A system of linear equations is a set of two or more linear equations that contain two or more variables. A solution to the system of linear equations is a set of values for the variables that satisfies all the equations in the system.

The system of linear equations having a single solution is a consistent system since a single solution is an indication that the equations intersect at a specific point. This contradicts the notion that the system is inconsistent. An inconsistent system is one that has no solutions.

Thus, if a system of linear equations has a unique solution, it must be consistent.

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