Write an explicit formula for each sequence. 4,1.5,-1,-3.5, . . . . .

Answers

Answer 1

I think the answer is -2.5n + 6.5.

How to work it out:

Look at how much it goes down by (since it's going down, put a negative sign)Find out the "0th term". In this case, you would add 2.5 to 4 to find out the 0th term.If the "0th term" is positive, put + … and if its negative, put - …So I think the answer is -2.5n + 6.5

Related Questions


Sketch the solid that results when the region enclosed by the given equations is revolved about the x -axis.
y = x²
y = 2x

Answers

y = x² , y = 2 x are  the region enclosed by the given equations is revolved about the y -axis.

What exactly is a closed area?

All space between a floor and ceiling that is enclosed on all sides by solid walls or windows, except doors that stretch from the floor to the ceiling, is referred to as an enclosed area.

What do you mean by the region that a closed curve encloses?

The sum of all infinitely thin rectangles with height f(x), enclosed by the curve y=f(x), and the x-axis between x=a and x=b, is what we mean when we write baf(x)dx.

Whether contained or not?

Use enclosed at all times. No longer regarded as a regular variety, enclosed would even be mistaken for another word by many readers.Use enclose, encloses, and enclosing rather than inclose for other words that are similar to enclosed.

The graph is attached in equation y = x² , y = 2 x

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Summarize the possible relationships for the y -intercepts, slopes, and number of solutions in a system of two linear equations in two variables.

Answers

A consistent system of equations has at least one solution.

A consistent system is considered to be an independent system if it has a single solution, such as the example we just explored. The two lines have different slopes and intersect at one point in the plane.

A consistent system is considered to be a dependent system if the equations have the same slope and the same y-intercepts. In other words, the lines coincide so the equations represent the same line. Every point on the line represents a coordinate pair that satisfies the system. Thus, there are an infinite number of solutions.

Another type of system of linear equations is an inconsistent system, which is one in which the equations represent two parallel lines. The lines have the same slope and different y-intercepts. There are no points common to both lines; hence, there is no solution to the system.

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help please do the work

Answers

Answer:

16.97

Step-by-step explanation:

[tex]BF=\sqrt{(-2-0)^2 + (1-3)^2}=2\sqrt{2} \\ \\ BC=\sqrt{(0-4)^2 + (3-(-1))^2}=4\sqrt{2}[/tex]

So, the perimeter is

[tex]2(4\sqrt{2}+2\sqrt{2})=12\sqrt{2} \approx 16.97[/tex]


Solve each system by elimination or substitution.
2 = 4y - 3x , 5x = 2y - 3

Answers

Using elimination method, the solution of the given system of equations is (-4/7, 1/14)

A system of equation can be solved using:

graphical methodsubstitution methodelimination method

The given system of equations:

2 = 4y - 3x   ............   (1)

5x = 2y - 3  .............. (2)

Re-arrange the equations so that all variables are on the left sides:

2 = 4y - 3x  

⇔ -3x + 4y = 2   .......  (3)

5x = 2y - 3

⇔  5x - 2y = -3  ....... (4)

Choose one variable to eliminate. Let us choose y. Multiply equation (4) by 2, we get:

10x - 4y = -6   ....... (5)

Add equation (3) and (5)

-3x + 4y = 2

10x - 4y = -6 +

7x          = -4

 x          = -4/7

Substitute back  x = -4/7 into equation (3):

-3x + 4y = 2

-3.(-4/7) + 4y = 2

12/7 + 4y = 14/7

4y = 2/7

y = 2/28 = 1/14

Hence, the solution is (-4/7, 1/14)

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Determine whether following set of numbers can be the measures of the sides of a triangle. If so, classify the triangle as acute, obtuse, or right. Justify your answer.
10,16,18

Answers

The following set of numbers, 10, 16, and 18, can be the measures of the sides of an acute triangle.

To know if a set of number is a valid measure of the sides of a triangle, it must follow the Triangle Inequality Theorem which states that the sum of any two sides must be greater than the third side, such that a + b > c, a + c > b, and b + c > a.

let a = 10, b = 16, and c = 18

a + b > c     10 + 16 > 18     26 > 18     True

a + c > b     10 + 18 > 21     28 > 16     True

b + c > a     16 + 18 > 21     34 > 10     True

To know what type of triangle based on the length of its side:

1. Take the sum of the squares of the two smaller sides.

10^2 + 16^2 = 356

2. Compare it to the square of the largest side.

18^2 = 324

324 < 356

If the sum of the squares of the 2 is larger than the square of the 3rd, it is an acute triangle.

if they are equal, it is a right triangle

if they are smaller, then it is an obtuse triangle.

Hence, 10, 16, and 18 can be the measure of the sides of an acute triangle.

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2
If x²- y² = 20 and x+y = 10, then find x

Answers

Answer:

x = 6

Step-by-step explanation:

x² - y² is a difference of squares and factors as (x + y)(x - y)

given

x² - y² = 20 , then

(x + y)(x - y) = 20 ← substitute x + y = 10

10(x - y) = 20 ( divide both sides by 10 )

x - y = 2 → (1)

x + y = 10 → (2)

add (1) and (2) term by term to eliminate y

2x + 0 = 12

2x = 12 ( divide both sides by 2 )

x = 6

Y=35x1 where x is distance and y is height

Answers

The average rate of change of the equation is 35

How to determine the average rate of change?

The equation is given as

y  = 35x^1

Evaluate the quotient x^1

So, we have

y  = 35x

The above equation is a proportional linear equation

A proportional linear equation is represented as

y = mx

Where

m represents the average rate of change

By comparison, we have

m = 35

Hence, the average rate of change of the equation is 35

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Complete question

Given the equation y = 35x^1 where x is distance and y is height, calculate the average rate of change


Simplify 2(b-a)+5(b-a) and justify each step in your simplification.

Answers

The Simplified value of the expression 2(b-a)+5(b-a) is 7b-7a .

Distributive property for real numbers "a", "b" and  "c" is defined as

a(b-c)=a*b-a*c.

In the given question

=2(b-a)+5(b-a)

Applying Distributive Property

=2*b-2*a+5*b-5*a

=2b-2a+5b-5a

Combining the like terms together

=2b+5b-2a-5a

=7b-7a                          (adding the like terms )

Therefore , the Simplified value of the expression 2(b-a)+5(b-a) is 7b-7a .

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Determine whether following set of numbers can be the measures of the sides of a triangle. If so, classify the triangle as acute, obtuse, or right. Justify your answer.
20,21,31

Answers

The following set of numbers, 20, 21 and 31, can be the measures of the sides of an obtuse triangle.

A triangle is a polygon with three sides and three vertices.

To know if a set of number is a valid measure of the sides of a triangle, it must follow the Triangle Inequality Theorem which states that the sum of any two sides must be greater than the third side, such that a + b > c, a + c > b, and b + c > a.

let a = 20, b = 21, and c = 31

a + b > c     20 + 21 > 31     41 > 31     True

a + c > b     20 + 31 > 21     51 > 21     True

b + c > a     21 + 31 > 21     52 > 20     True

To know what type of triangle based on the length of its side:

1. Take the sum of the squares of the two smaller sides.

20^2 + 21^2 = 841

2. Compare it to the square of the largest side.

31^2 = 961

961 > 841

If the sum of the squares of the 2 is larger than the square of the 3rd, it is an acute triangle.

if they are equal, it is a right triangle

if they are smaller, then it is an obtuse triangle.

Hence, 20, 21 and 31 can be the measure of the sides of an obtuse triangle.

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what is 109 x 3= the answer is
327

Answers

Answer:

109 x 3 = 327

Step-by-step explanation:

The answer would be 109 x 3 = 327

Can somebody please Help me please!!!and thank you!!!!!!!

Answers

Answer:

17.25 < 17.252

Step-by-step explanation:

17.25 means 17.250. So, 17.250 is less than 17.253, which is correct. The other answer choices are incorrect because the sign is pointed the wrong way. 29.60 is not greater than 29.65, so that's incorrect. 21.51 is greater than 21.49. That is not an answer choice though, so that answer choice is incorrect. 7.602 is not greater than 7.612, so that is incorrect.

Hope this helps! :)

A rectangular mural measures 234 inches by 245 inches. rhianon creates a new mural that is 33 inches longer. what is the perimeter of rhianon's new mural?

Answers

The new mural created by Rhianon, which is 33 inches longer, has a perimeter of 1024 inches.

Perimeter refers to the total distance around a two-dimensional figure. The perimeter of a rectangle is the sum of all its 4 sides and is given by the formula

P = 2l + 2w

where l = length

w = width

If a rectangular mural measures 234 inches by 245 inches, length is usually longer than the width, and Rhianon creates a new mural that is 33 inches longer, then the length of Rhianon's mural is:

l = 245 inches + 33 inches

l = 278 inches

If the new mural is the same as the width of the rectangular mural and its length is 278 inches, then the perimeter can be solved using the formula for the perimeter of a rectangle.

P = 2l + 2w

P = 2(278 inches) + 2(234 inches)

P = 556 inches + 468 inches

P = 1024 inches

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On a coordinate graph, your house is located at the origin (0,0) You leave your house and walk 6 blocks north. Then you turn and walk 22 blocks west. Since it is getting late, you decide to walk straight back home. How many blocks is it to walk straight back to your house? Round your answer to the nearest tenth​

Answers

Answer:

22.8 blocks

Step-by-step explanation:

We can think of your path as traveling on a coordinate plane. You start by walking 6 units in the positive y direction, then 22 units in the negative x direction, then walking from this point (-22, 6) back to (0, 0)

This path draws a right triangle. The shorter leg is 6 units long, and the longer end is 22 units long. You want to find the hypotenuse of this triangle.

The hypotenuse is found using the Pythagorean theorem:

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

A and B represent the sides of the triangle, and c represents the hypotenuse!

Before plugging in the functions, isolate c, since that's the answer we're looking for:

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

Now, plug in the side lengths of the triangle:

[tex]c=\sqrt{6^2+22^2}[/tex]

Now simplify!

[tex]c=\sqrt{36+484} \\x=\sqrt{520} x=22.8[/tex]

It is 22.8 blocks back to your house! Hope this helps!

 

A building in a city has a rectangular base. The length of the base measures 75 ft less than twice the width. The perimeter of this base is 840 ft. What are the dimensions of the​ base?

Answers

The dimensions of the base are 180 feet in length and 165 feet in width.

Let the width of the base be "x".The length of the base is 75 less than twice the width.The length of the base is 2x-75.The perimeter of the base is given to be 840 feet.The perimeter of a rectangular base is twice the sum of its length and its width.The perimeter of a rectangular base is 2[tex]\times[/tex][(2x-75) + x].840 = 2[tex]\times[/tex](3x-75)420 = 3x-753x = 495x = 165Thus, the width is 165 feet.The length is equal to 2(165-75) = 2[tex]\times[/tex]90 = 180 feet.

The whole length of any closed shape's boundary is known as its perimeter. Let's use an illustration to try to comprehend this. You may have a sizable square-shaped farm, for instance. You now decide to fence your farm in order to protect it from stray animals. Finding the entire length of the farm's boundary is as simple as multiplying the length of one side of the farm by 4. There are a lot of situations like this when we can be applying the perimeter-finding notion without even realizing it.

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d(A−N)=Q
solve for A

Answers

Answer:

A= Q/d +N

Step-by-step explanation:

First you want to move the d term over by dividing both sides

Next you can move the N over by adding it to both sides.

Step-by-step explanation:

adventures

Q

d and d will cancel and

it let d= A-N

Q

If 35% of a number is 63 and 60% of the same number is 108, find 25% of that number.

Answers

Answer:22.05

hope it help

and have a good day

Answer:

45

Explanation

35% is 63

so 5% is 9

so 100% is 180 cuz 5 multiplied by 20 is 100

so 25 % is 25 divided by 100 is 0.25×180 which is 45

hope that helps

Please Help with problem 24, algebra 1, In the attachment.

Answers

The measure of the given angle is 10 degrees.

what are supplementary and complimentary angles?

Supplementary angles are those angles that sum up to 180 degrees.

Complimentary angles are those angles that sum up to 90 degrees

The supplement of the angle is 10° more than twice it's complement.

Therefore,

180 - x = 2(90 - x) + 10

open the brackets

180 - x = 2(90 - x) + 10

180 - x = 180 - 2x + 10

180 - 180 - 10 = -2x + x

-10 = -x

divide both sides by - 1

x = -10 / -1

x = 10

Therefore, the measure of the given angle is 10 degrees.

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Answer:

Step-by-step explanation:

you did that correctly but it will equal 90

The amount of a commission is directly proportional to the amount of a sale. A realtor received a commission of 48,000 on the sale of an 800,000 house. How much would the commission be on a 650,000 house?

Answers

How much would the commission be on a 650,000 house? $39,000

Given:

Rate of the house 1= $8,00,000

Commission for the house 1=$48,000

Rate of the house 2= $6,50,000

Commission for the house 2=x

What is the commission for the house 2?

8,00,000 ⇒48,000

6,50,000 ⇒ x (directly proportional)

On cross multiplication,

[tex]8,00,000 *x= 48,000*6,50,000\\\\x=\frac{48,000*6,50,000}{8,00,000} =39,000[/tex]

Commission for the house 2 = $39,000

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10 = z/2 + 7 what is 10

Answers

Answer:

19

I first do plus 2and 7 and 10=z

A car is traveling at 34miles/hour down a road. A rabbit appears 0.040km away on the road. If the car takes 2.5seconds to stop, will the car hit the rabbit or stop before?

What is the distance between the rabbit and where the car stops?

Answers

Answer:

The rabbit will get hit because the car takes too long to break

Step-by-step explanation:

When using PEMDAS to evaluate a numerical expression, we move from

Answers

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

Multiplication and Division - whatever comes first from left to right (i.e. 6*7*2, do 6*7 first)

Addition and Subtraction - same thing as multiplication and division, whatever comes first

How does the First Amendment to the Constitution affect American society?


The right to bear arms means many Americans own guns for protection.

The right to bear arms means many Americans own guns for protection.

The right to due process gives Americans a strong sense of ownership of their personal property.

The right to due process gives Americans a strong sense of ownership of their personal property.

The right to a jury trial has created a strong sense of fairness in the criminal justice system among Americans.

The right to a jury trial has created a strong sense of fairness in the criminal justice system among Americans.

The right to a free press allows Americans to have access to many independent sources of news and information.

Answers

The First Amendment to the Constitution affect American society as D. The right to a free press allows Americans to have access to many independent sources of news and information.

What is Constitution?

It should be noted that Constitution simply refers to the rules and laws that guide a group of people especially a country.

In this case, the First Amendment to the Constitution affect American society as The right to a free press allows Americans to have access to many independent sources of news and information.

In conclusion, the correct option is D.

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The correct answer is "The right to a free press allows Americans" to have access to many independent sources of news and info

Explanation:

The First Amendment to the constitution was ratified in 1791, in this it was established government could not interfere in the right to exercise religion or assemble as well as the rights of freedom of speech and freedom of the press. This last aspect implies the government cannot interfere in the circulation of information, according to this, citizens have the right to create sources of news and information to report news or express opinions. Thus, the First Amendment affects American society because "the right to a free press allows Americans to have access to many independent sources of news and info".

Help me Pleaseee this has to be turned in by tomorrow I am a 7th grader for tips to get an accurate answer

Answers

Answer:

Parallelogram S: b = 7, h = 6

Parallelogram T: b = 3, h = 6

Area of Parallelogram S = 42

Area of Parallelogram T = 18

Step-by-step explanation:

The bases and heights of each parallelogram are given by the arrows, just count the number of boxes you see.

Area = base × height, so you just multiply these numbers. Area of parallelograms is found the same way as area for squares/rectangles.

7 × 6 = 42 and 3 × 6 = 18

Given:
C is the midpoint of segment AE
C is the midpoint of segment BD
Segment AE is congruent to segment BD

Prove:
Segment AC is congruent to segment CD

Left column:
1. C is the midpoint of segment AE
C is the midpoint of segment BD
Segment AE is congruent to segment BD
2. AC=CD
BC=CD
3. AE=BD
4. AE=AC+CE
BD=BC+CD
5. AC+CE=BC+CD
6. AC+AC=CD+CD
7. 2AC=2CD
8. AC=CD
9. Segment AC is congruent to segment CD

Have to find right column.

Answers

The solving for the Segment CE is congruent to segment BC is bellow.

Congruent segments defines as:

Congruent segments are those with the same length. Collinear points are those that are on the same line. A theorem is a mathematically proven proposition. A segment's midway is a point that divides one segment onto two congruent segments.

In Geometry, what are Congruent Lines?

Congruent lines are two line segments that have the same length. For example, if we possess two 6 cm line segments AB as well as PQ, we may say AB PQ and so they are congruent.

According to the given data:

Solving for the right column:

C is the midpoint of segment AE

C is the midpoint of segment BD

Segment AE is congruent to segment BD(given)

2. BC = EC

   BC=CD

3. AE=BD

4. BD = BC + CD

   AE=AC+CE

5. AC+CE=BC+CD

6. CE+CE=BC+BC

7. 2CE=2BC

8. CE=BC

9. Segment CE is congruent to segment BC.

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Identify a pattern and find the next three numbers in the pattern.
3,6,10,15, . . .

Answers

The pattern exists described as a sequence of repeating objects, shapes, or numbers. Patterns can also occasionally be referred to as a series.

The pattern follows the rule = Σn+(n+1)

The next three numbers in the pattern be 3, 6, 10, 15, 21, 28, 36.

What is meant by 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. Patterns can also occasionally be referred to as a series.

Let the numbers in the pattern be 3,6,10,15, . . .

t1 = 1 + 2 = 3

t2 = 3 + 3 = 6

t3 = 6 + 4 = 10

t4 = 10 + 5 = 15

t5 = 15 + 6 = 21

t6 = 21 + 7 = 28

t7 = 28 + 8 = 36

The pattern follows the rule = Σn+(n+1)

Therefore, the next three numbers is 21, 28, 36.

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please help me witht this math problum.

Answers

Answer: 1/3

Step-by-step explanation:

Somebody help me ASAP

Answers

Answer:

⬤ = 8

⬛ = 6

Step-by-step explanation:

⬤ = x

⬛ = y

x + y = 14

x - y = 2

add the numbers on top of each other together:

add x to x = 2x , y + -y = 0 , 14 + 2 = 16

2x = 16

divide both sides by 2

x = 8, plug this back into the equation

8 + y = 14

8 - y = 14

y = 6

How do you find significant figures? Explain in detail with examples.

Answers

What are significant figures explain with an example?
All zeros that occur between any two non zero digits are significant. For example, 108.0097 contains seven significant digits. All zeros that are on the right of a decimal point and also to the left of a non-zero digit is never significant. For example, 0.00798 contained three significant digits.

For some time, Johannes Kepler thought that the Platonic solids were related to the orbits of the planets. He made models of each of the Platonic solids. He made a frame of each of the platonic solids by fashioning together wooden edges. How many wooden edges did Kepler have to make for the cube?​

Answers

Kepler had 9 wooden edges to make for the cube.

As it is given in the data that the platonic solids are related to the orbits of the planets, and he made models of each of the Platonic solids. Kepler made a frame of each of the platonic solids by fashioning together wooden edges. At that time six planets were discovered and out of the six, two platonic solids were considered as cube. A cube is a three dimentional structure which has 8 corners and 12 edges.

So the number of edges = 4 x 2 + 1

= 9

Kepler has 9 wooden edges to make for the cube, to make a frame of each of the platonic solids by fashioning together wooden edges.

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List the angles and sides of ΔWXY in order from smallest to largest.

Answers

The order of the sides from smallest to largest is: WX, XY, YW

How to order of the angles from smallest to largest?

Given: [tex]\angle[/tex] X = 90° (right angle) and [tex]\angle[/tex] W = 51°

The sum of the interior angles of any triangle is 180°, then

[tex]\angle[/tex] W + [tex]\angle[/tex] X + [tex]\angle[/tex] Y = 180°

Replacing the given values then we get

51° + 90°+ [tex]\angle[/tex] Y = 180°

141° + [tex]\angle[/tex] Y = 180°

Solving for  [tex]\angle[/tex] Y

Subtracting 141° both sides of the equation:

141° + [tex]\angle[/tex] Y - 141°=180° - 141°

[tex]\angle[/tex] Y = 39°

The order of the angles from smallest to largest is:

[tex]\angle[/tex] Y = 39°, [tex]\angle[/tex]  W = 51°, [tex]\angle[/tex] X = 90°

The opposite sides to these angles must be ordered in the same way:

Opposite side to  [tex]\angle[/tex] Y: WX

Opposite side to  [tex]\angle[/tex] W: XY

Opposite side to  [tex]\angle[/tex] X: YW

The order of the sides from smallest to largest is: WX, XY, YW

Therefore, the correct answer is option C. WX, XY, YW

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