Mathematics Middle School

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What is a name for the marked angle?

Answers

Answer 1

i’m pretty sure obtuse?

Answer 2

It’s EAD and it’s an obtuse angle

Related Questions

pls show work and also you will get 100 points 4 this

Answers

Answer: Alligators

Step-by-step explanation: This entire paper is just about combining like terms.

I won't go too in depth about it since it's self-explanatory, but I'll explain it just a bit. Like terms are two terms that have the same variable. For example, 19 and 24 are like terms since they are both numbers. 15x and 18x are like terms since they are both the same variables. 2y and 5y are like terms since they are both the same variables. However, 3x and 4y are NOT like terms, they do not have the same variable.

Also, variables that have different exponential powers are also not like terms. For example, 5x^2 and 7x are not like terms as one is squares and one is to the 1st power. Similarly, 3x^3 is not the same variable as 2x^4.

When you have 5x and -2x, you subtract 5x and 2x. Thus, the combination would be 3x. When you have -4x - 2x, you would get -6x, and if you have -4x + 2x, you would get -2x.

What you were supposed to do is simplify the equations by combining like terms, and then crossing off the letters that correspond to what you have left in the expression. The remaining letters should spell out a joke.

Attached below I have provided the correct answer.

Hope this helped.

Answer:

1. 3x+5x+14x = 22x

2. 4x+7+11x = 15x+7

3. 10x+8-3x = 7x+8

4. 6x-5+x-11 = 7x-5-11 = 7x-16

5. -8x +19 + 2 - 2x = -10x+19+2 = -10x+21

6. -x+23+4x-34-x = 2x+23-34 = 2x-11

7. 105+27x-68-19x-27+x = 9x+105-68-27 = 9x+10

8. 7x+16-3x+3-2x-2x = 0x+19 = 19

9. -18 + 6 -4x+ 10 - 11x + 2 = -15x

10. 16+4x-12x-28-6x+17+x-1 = -13x +4

PLEASE!!!!! I REALLY NEED THIS ASAP!!!

Answers

okay here we go
statement:
CA≅CE
reason: given (see tick marks)
statement: EV ≅ AV
reason: given (see tick marks again)
statement: CV ≅VC
reason: Reflexive property of congruence
statement:CAV ≅CEV
reason: SSS (side side side)

Solve the equation r = 1/(x-1) for x in terms of r. In other words, manipulate the equation until you have x equal to an expression with r's in it but no x's.

Answers

Answer:

[tex]x=\frac{1}{r} +1[/tex]

Step-by-step explanation:

[tex]r=\frac{1}{x-1}[/tex]
[tex]r(x-1)=1[/tex]
[tex]x-1=\frac{1}{r}[/tex]
[tex]x=\frac{1}{r} +1[/tex]

Answer:

[tex]x=\dfrac{1+r}{r}[/tex]

Step-by-step explanation:

Given equation:

[tex]r=\dfrac{1}{(x-1)}[/tex]

Multiply both sides by (x - 1):

[tex]\implies r(x-1)=\dfrac{1}{(x-1)} \cdot (x-1)[/tex]

[tex]\implies r(x-1)=1[/tex]

Expand the brackets:

[tex]\implies rx-r=1[/tex]

Add r to both sides:

[tex]\implies rx-r+r=1+r[/tex]

[tex]\implies rx=1+r[/tex]

Divide both sides by r:

[tex]\implies \dfrac{rx}{r}=\dfrac{1+r}{r}[/tex]

[tex]\implies x=\dfrac{1+r}{r}[/tex]

10POINTS !!
the sum of the length of a side of two squares is 18cm and the sum of their areas is 212 cm^2. find the length of a side of the smaller square

Answers

Step-by-step explanation:

length

a + b = 18cm

a = 18 - b

Area

a² + b² = 212cm²

(18-b)² + b² = 212

324 - 36b + b² + b² = 212

2b² - 36b + 112 = 0

b² - 18b + 56 = 0

b² - 4b - 14b + 56 = 0

b(b-4) -14(b - 4) = 0

(b-4) (b-14) = 0

b-4 = 0 OR. b-14 = 0

b = 4 cm b = 14 cm

so 4cm < 14cm

so , length of a side of the smaller square is 4cm .......

And , large square's = 14cm .....

Answer:

square one sides = 14, 14

square 2 sides = 4, 4

14 + 4 = 18

14 x 14 + 4 x 4 = 212

Step-by-step explanation:

14 x 14 + 4 x 4

this is the area of the 2 being added

the sides lengths are 14 and 4

pls help best u can

What is the range of possible sizes for side x?

Answers

Using A^2 + B^2= C^2 you plug in 8 as A and 8.5 as C because it’s the longest side and you get 8^2 + B^2 = 8.5^2
64 + b^2= 72.25
Subtract the 64 from the 72.25
B^2=8.25
Then take the square root
2.87
Not sure if this is right

A^2 + B^2 = C^2
=11.67(Approx)

In a group of 200 students, the ratio of students who like Nepali and Social studies is 2:3. If 45 students like both the subjects and 20 students like none of the subjects:

A. Illustrate the given information in a venn diagram.

B. How many students like Nepali?

C. How many students like Social study only?

Please give right answer don't give any thing wrong to get 50 points .

Answers

Answer:B. 80 students like Nepali

C. 75 students like Social Studies only

Step-by-step explanation: The total of the ratio = the total number of students

2 + 3 = 5

5 parts = 200 students

1 part = 200 ÷ 5 = 40 students

Therefore,the students who liked Nepali(2 parts) = 2 × 40 = 80

The students who liked Social Studies(3 parts) = 3 × 40 = 120

But since 45 students liked both subjects,then those who liked Social Studies only:

120 - 45 = 75

The answers are a) attached b) 80 and c) 75

What is a Venn diagram?

A Venn diagram is an illustration that uses circles to show the relationships among things or finite groups of things.

Given that, In a group of 200 students, the ratio of students who like Nepali and Social studies is 2:3. If 45 students like both the subjects and 20 students like none of the subjects,

The total of the ratio = the total number of students

2 + 3 = 5

5 parts = 200 students

1 part = 200 / 5 = 40 students

b) Therefore, the students who liked Nepali(2 parts) = 2 × 40 = 80

c) The students who liked Social Studies(3 parts) = 3 × 40 = 120

Since, 45 students liked both subjects, then those who liked Social Studies only:

120 - 45 = 75

Hence, The answers are a) attached b) 80 and c) 75

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help
Is Figure BBB a scale copy of Figure AAA?

Answers

No
Reason - if the scale factor of a and b was 2, the dimensions of a would be 4, 7.2 and 10 not the ones present on A

The ratios of corresponding side lengths are not equal.

Therefore, Figure B is not a scale copy of Figure A.

Here, we have to determine if Figure B is a scale copy of Figure A, we need to compare the corresponding sides of the two triangles and check if the ratios of their side lengths are equal.

Figure A has side lengths: 3.6, 2, and 5.

Figure B has side lengths: 8.9, 4, and 11.3.

Let's check if the ratios of corresponding side lengths are equal:

Ratio of corresponding side lengths of A and B:

3.6 / 8.9 ≈ 0.4045

2 / 4 = 0.5

5 / 11.3 ≈ 0.4425

The ratios of corresponding side lengths are not equal.

Therefore, Figure B is not a scale copy of Figure A.

In order for two triangles to be scale copies of each other, all corresponding side lengths must have the same ratio.

Since the ratios of side lengths in Figure A and Figure B are not equal, they are not scale copies of each other.

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Please help with this qn :)
The sum of the length of a side of two squares is 18cm and the sum of their areas is 212 cm^2. find the length of a side of the smaller square

Answers

Answer:

4 is the length

Step-by-step explanation:

14 and 4

14 x 14 + 4 x 4 = 212

14 + 4 = 18

4 is the length your welcome :)

pls halp

What is the relationship between ∠a and ∠b?

Answers

Answer is B. Complimentary Angles

Reason - complementary angles are when
either of two angles equal to 90°.

The relation between the two angles ∠a and ∠b is that they are complementary angles. The correct option is B.

What are complementary angles?

The angles when added give the sum of 90 degrees and are called complementary angles. The angle is defined as the span between two intersecting lines or surfaces at or close to the point where they meet.

In the given figure it is observed that the two angles ∠a and ∠b when added give 90 degrees.

Therefore, the relation between the two angles ∠a and ∠b is that they are complementary angles. The correct option is B.

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help quick ples

What is the range of possible sizes for side x?

Answers

Answer: 0.5 < x < 16.5.

Step-by-step explanation: Two sides of triangle: 8.0 units and 8.5 units

Measure of third side = x

According to the triangle's inequality,

Sum of any two sides > third side. (i)

Difference between the sides < third side. (ii)

If x is the third side, then

x < 8+8.5 [Using (i)]

i.e. x< 16.5

Also, x > 8.5-8 [Using (ii)]

i.e. x> 0.5

Hence, Range of possible sizes for side x would be 0.5 < x < 16.5.

The range of possible sizes for side x is,

⇒ 0.5 < x < 16.5

What is mean by Triangle?

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

Two sides of the triangle are 8.5 and 8.

Now, The range of possible sizes for side x is,

⇒ x < 8.5 + 8

⇒ x < 16.5

⇒ x > 8.5 - 8

⇒ x > 0.5

Thus, The range of possible sizes for side x is,

⇒ 0.5 < x < 16.5

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Write an equation that uses parentheses and has the solution x=4. In the "Show Your Work" box, show how you would check the solution x=4 in your own equation.

I NEED AN EQUATION HERE IS AN EXAMPLE OF THE FORMAT:
2 (8x - 1) < 3 (4x - 5)

Answers

Answer:

2(8x - 5) = 2(6x + 3)

Step-by-step explanation:

2(8x - 5) = 2(6x + 3)

16x - 10 = 12x + 6

16x - 12x = 6 + 10

4x = 16

x = 16 / 4

x = 4

Expand ,group like terms and solve for X

factor the following expression. 3x^3-12x^2-2x-8

Answers

(x–4) (3x^2 + 2)

i hope that helps with you’re expression

Simplification of Polynomials

Polynomials are mathematical expressions made up of many terms.

To simplify a polynomial as much as possible, you must group all the like terms and rearrange them from higher to lower power.

3x³ - 12x² - 2x-8

The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of any constant term is 0. The derivative of axⁿ it's naxⁿ⁻¹.

3 × 3x³⁻¹ + 2(-12)x²⁻¹ - 2x¹⁻¹

Multiply 3 x 3.

9x³⁻¹ + 2(-12)x²⁻¹ - 2x¹⁻¹

Subtract 1 from 3.

9x² + 2(-12)x²⁻¹ - 2x¹⁻¹

Multiply 2 by −12.

9x² - 24x²⁻¹ - 2x¹⁻¹

Subtract 1 from 2 and subtract 1 from 1.

9x² - 24x¹ - 2x⁰

For any term t, t¹ = t.

9x² - 24x - 2x⁰

For any term t except 0, t⁰=1.

9x² - 24x - 2

Answer: The solution of the polynomial 3x³ - 12x² - 2x-8 is 9x² - 24x - 2.

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pls help meh

Which angle refers to the same angle as \angle BPF∠BPFangle, B, P, F?

Answers

We have: ∠APC + ∠BPC = 180⁰ (adjacent corner)

=> ∠APC + 133⁰ = 180⁰

=> ∠APC = 180⁰ - 133⁰ = 47⁰

Beside: x = ∠BPD = ∠APC = 47⁰ (opposite corner)

ANSWER: x = 47⁰

Ok done. Thank to me :3

The value of the angle x will be equal to 47⁰.

What is an angle?

The angle is defined as the span between two intersecting lines or surfaces at or close to the point where they meet.

It is given that ∠APC + ∠BPC = 180⁰ (adjacent corner)

The angle x will be calculated as below:-

=> ∠APC + 133⁰ = 180⁰

=> ∠APC = 180⁰ - 133⁰ = 47⁰

Beside: x = ∠BPD = ∠APC = 47⁰ (opposite corner)

Therefore, the value of the angle x will be equal to 47⁰.

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Which table represents a linear function?

Answers

o 16 30 one

as it forms a pattern

The first. The y value changes by the same amount for every x value

HELP ASAP!!! 99 ASSIGNMENTS TO GO!!!! 25 POINTS!!!!

Answers

1: Ratio
2: Unit Rate
3: Scale Drawing
4: Similar Figures
5: US Customary System
6: Rate
7: Scale

I hope this helps! :)

Answer:

1. Ratio

2. Unit Rate

3. Scale Drawing

4. Similar Figures

5. US Customary System

6. Rate

7. Scale

Step-by-step explanation:

Most of them are just definitions

So far this year, Adam has played 30 games of chess and has only won 6 of them. What is the minimum number of additional games he must play, given that he is sure to lose at least one-third of them, so that for the year he will have won more games than he lost?
A) 24
B) 57
C) 87
D) It is not possible for Adam to do this.

The correct answer is B) 57, but not sure how?

Answers

Answer:

Step-by-step explanation:Yikes. Just so we’re all clear—this is not a real SAT question.

So far, Adam’s record is 6 wins/30 games. If he plays x more games, his record will be:

image

You find the minimum x such that the fraction is greater than ½, which would mean he won more than ½ of his games.

Let’s do some math!

image

So if he plays 54 more games, and wins 2/3 of them, he’ll have the same number of wins as losses. Check on that to make sure: He’ll have played 30 + 54 = 84 games, and won 6 + (2/3)54 = 42 of them. Yep, that works.

Now here is where it gets tricky (and why this question is not SAT-caliber). Remember that he’s losing 1/3 of his games. If his 52nd, 53rd, and 54th additional games were win, win, loss, then he would have had, very briefly, a winning record after his 53rd additional game.

His 55th additional game is another chance at a winning record. If he loses that game, then he’ll win the next two, and have a winning record for sure by the 57th additional game. From there, if he continues winning 2/3 of his games, he’ll have a winning record forever.

Try adding 57 to the equation, then you can see how 57 adds into the equation and proves the answer.

Ten points QRSTUVWXY and Z are equally and consecutively spaced on a circle.
What is the size, in degrees, of the angle ∠QTW?

Answers

The size of ∠QTW in degrees is 72°. See the explanation below. This is based on the concept of opposite sides in a quadrilateral.

What is the logic leading to the above result?

QSUWY which is a pentagon is regular that mean:

∠QYW = 108°

The quadrilateral QTWY is a cyclic one. This means that we can apply the rule that states that opposites sides must add up to 180°

Thus, ∠QTW =

180 - 108

= 72°

What is a quadrilateral?

A closed quadrilateral has four sides, four vertices, and four angles. It is a form of polygon.

In order to create it, four non-collinear points are joined. Quadrilaterals always have a total internal angle of 360 degrees.

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Full Question:

See the attached image for missing details.

They are correct can you make me brainlest:)?

a 2-quart carton of pineapple juice costs $5.28. what is the price per cup

Answers

Answer:

$0.66 per cup

Step-by-step explanation:

There are 8 cups in 2 quarts, so 5.28/8 is $0.66 per cup.

Answer:

0.66

Step-by-step explanation:

8 cups are in 2 quarts so you going to count 8 cups untill you get 5.28 and then you see how many cents that it is so its 0.66

6. The perimeter of the figure below is equal to 150 cm. What is the length of the longest
side of the polygon? Use mathematics to explain how you determined your answer.
Use words, symbols, or both in your explanation. **SHOW WORK!!!**
x
x+6
x+4
x+5
x+8
x+1
LONGEST SIDE:__________

Answers

Answer: 29 centimeters long

Step-by-step explanation: What you want to do in this kind of situation is to combine all like terms. After, you would get 6x + 24 = 150. What you would do here is to get 6x by itself by subtracting 24 on both sides. Now 6x = 126, to isolate the variable you divide 6 on both sides to get x = 21. However, the questions is asking for the longest side and you know that x + 8 will be the greatest out of all. So, x = 21 + 8 equals 29 centimeters. I hope this helps, please give me a brainlest! :)

We know that the polygon is a six side shape because there is 6 measurements

Perimeter: all sides added

First add the given numbers
6+4+5+8+1=24

Then subtract that number from answer
150cm-24cm=126cm

Divide that by the amount of numbers
126/6=21

That means ’x’ is 21
Now you have;
21(x)
27(x+6)
25(x+4)
26(x+5)
29(x+8)
22(x+1)

Make sure they all add to 150
21+27+25+26+29+22=150cm

To find the longest side you look and the largest number which is 29

LONGEST SIDE= x+8

Round 21,498.2536 to the thousand place

Answers

Answer:

[tex]20000.2600[/tex]

here's the verified answer

Step-by-step explanation:

please mark me brainliest

20,000.000
Look at the hundreds Column which is the 4 and the rule is If the number is below 5 you round down and if the number is 5 and above you round up
For example 4 is below 5 so you round down

NEED HELP
rouund each number to the nearest TEN

# 1
82.14

#2
38.5

#3
41.3

Answers

Answer:

80, 40, 40

Step-by-step explanation:

The rule is if the number before the tens place is 5 or more round up and if it is 4 or less round down.

I like to look at it without the rule and what makes sense.

82.14: my choices are 80 or 90. What number is 82.14 closer to on the number line? 80.

38.5 The choices are 30 and 40. This number on a number line would be closer to 40

41.3 The choices are 40 and 50. On a number line this number would be closer to 40.

1.80
2.40
3.40
Round to the nearest ten, then you need to see the unit digit, if the unit digit is more than or equal to 5, then add one to the ten digit, and write 0 in the back ;if not , only write the 0 in the back of ten digit

Ariana was looking at rent costs for 555 apartments. Each rent was a different amount between \$1{,}000$1,000dollar sign, 1, comma, 000 and \$1{,}400$1,400dollar sign, 1, comma, 400 per month, except for one apartment whose rent was \$4{,}800$4,800dollar sign, 4, comma, 800 per month. [Show data] Ariana looked at the mean and median of the rents. Then, she decided to remove the \$4{,}800$4,800dollar sign, 4, comma, 800 rent from the set and recalculate the mean and median. How will removing this rent affect the mean and median?

Answers

Answer:

tough one

Step-by-step explanation:

sorry goodluck

Yea I’m so lost and I’m in middle school. :0

20 POINTS+BRAINLIEST: 8TH GRADE MATH PART 3: Word problem with fractions - please list out the steps and explain how you came to the answer

Answers

Answer: H. 12

Step-by-step explanation:

Add all cost of each price of the each fabric once to get $925 (150+275+500). Then, divide 5,550/925 to get 6. Then multiply 1/3 by 6 to get 2. Then multiply 2/3 by 6 to get 4. Then add 2+4+6 to get 12.

The answer is 6 because 6x150= 900 (price of 1/3 yard) and 6x275=1650 (price of 2/3 yard) and 6x500=3000 (price of 1 yard)

My math

Which of the following can be directly measured using a ruler?

A. Distance between the earth and the moon
B. Distance between two cities
C. Width of a window frame
D. Height of a mountain

Answers

Answer:

Step-by-step explanation:

windows arent that big compared to 2 cities, distance between the and moon, or a height of a mountain. so i think C is the only reasonable answer

Answer : C. Width of a window frame
Rulers are only 12 inches measuring all the choices beside a window frame would take forever, and since a window frame is smaller itll be easier

Answers

Answer:

It will affect the mean and median in a decreasing matter

Step-by-step explanation:

toodles ;)

Answer:

decreasing matter

Step-by-step explanation:

Michael is baking cookies. His cookie recipe calls for 3/4 cups sugar and makes 24 cookies. If he wants to scale the recipe to make exactly 18 cookies, how many cups of sugar will he need? Express your answer as a mixed number.

Answers

[tex]\begin{array}{ccll} \stackrel{cups}{sugar}&cookies\\ \cline{1-2} \frac{3}{4}&24\\[1em] x&18 \end{array}\implies \cfrac{ ~~ \frac{3}{4} ~~ }{x}~~ = ~~\cfrac{24}{18}\implies \cfrac{ ~~ \frac{3}{4} ~~ }{\frac{x}{1}}~~ = ~~\cfrac{4}{3}\implies \cfrac{3}{4}\cdot \cfrac{1}{x}=\cfrac{4}{3} \\\\\\ \cfrac{3}{4x}=\cfrac{4}{3}\implies 9=16x\implies \cfrac{9}{16}=x[/tex]

now, the fraction is not an improper one, thus we can't quite put it in a mixed format, unless you count 0 as its whole, then I guess we can say is [tex]0\frac{9}{16}=x[/tex]

Answer:

9/16

Step-by-step explanation:

24/6=4

18/6=3

(3/4)x(3/4)=9/16

A bank gives each new customer a 4-digit code number which allows the new customer to create their own password. The digits are 1, 3, 5, 7 with no digits repeating. What is the possibility the password does not contain 5, that the number will start with 371?

Answers

Answer:

firstly it is a four number combo with no repeating numbers so it has to include 5 but if you mean it like you said it 0

Step-by-step explanation:

sry i read it wrong the first time

Answer:

ZERO probability

Step-by-step explanation:

POSSIBLE combos 4 x 3 x 2 x1 = 24 possible combos

if it starts with 371 then the only choice for the 4th digit is 5

but no combo can have a 5 (per question)

so there are ZERO chances of this happening

PLS HELP BEST OF YOUR ABILITY
Figure B is a scaled copy of Figure A.

What is the scale factor from Figure A to Figure B?

Answers

Answer: x = 60°

Step-by-step explanation:

We know a circle is equal to 360°, so we can subtract from 360° to find x using vertical angles and other given details.

Vertical (opposite) angles are equal to each other. This is why, for example, we know AGE and FGC are both 30°.

See attached for a breakdown of the angles.

360° - 30° - 30° - 90° - 90° = 2x

120° = 2x

60° = x

Answer:

x = 60°

Step-by-step explanation:

Hello!

The sum of angles on a line is 180°.

Given that Angle G is 90°, the other measure on Line DB would also be 90°. The missing angle next to x can be called y.

x° + y° = 90°

Angle Y

The Angle y can be calculated by using the Vertical Angles Theorem. The theorem states that if two non-adjacent angles are formed by the intersection of two lines, the measures of the angles are congruent.

This means that the measure of Angle y is 30°, as the 30° angle and y are non-adjacent and are formed by the intersection of lines AC and EF.

Angle X

We can now solve for x by plugging in 30° for y in the equation.

x° + y° = 90°x° + 30° = 90°x° = 60°

The value of x is 60°.

Please Help!
Below are the data collected from two random samples of 500 American adults on the number of hours they work per day (rounded to the nearest hour):

Number of hours of work per day 6 7 8 9 10
Sample A: Number of adults 60 90 145 150 55
Sample B: Number of adults 70 80 140 145 65

Ryan concludes that adults spend a mean of 8 hours working each day. Malia thinks the mean is 9 hours. Who is correct—Ryan or Malia?

Make Sure You Do Tis Because I Will Report You If You Don't

Explain your answer in two or three sentences. Make sure to use facts to support your answer.

Answers

Answer:

8 or Ryan

Step-by-step explanation:

mean = sum of terms / number of terms so,

6+7+8+9+10/5=8

Yes in the just of it 87- 39 equals 18

Ariana was looking at rent costs for 555 apartments. Each rent was a different amount between \$1{,}000$1,000dollar sign, 1, comma, 000 and \$1{,}400$1,400dollar sign, 1, comma, 400 per month, except for one apartment whose rent was \$4{,}800$4,800dollar sign, 4, comma, 800 per month. [Show data]
Ariana looked at the mean and median of the rents. Then, she decided to remove the \$4{,}800$4,800dollar sign, 4, comma, 800 rent from the set and recalculate the mean and median.
How will removing this rent affect the mean and median?

Answers

The way that this action is going to affect the mean and the mean and the median value would be decreased than what it was supposed to be.

What is the mean?

In a frequency distribution, the mean is the number that is used to represent the average of a group of data. To get the mean, you have to add up the numbers in the data set and divide by the total number in the data set.

The formula is fx/n

When the average of $4800 is removed from the data set, the mean is going to decrease by the number and the value of fx would also decrease. Hence we can conclude that it would cause the value to reduce.

The median is the middle value, it would also cause the median in the data set to be smaller than it was.

help asap What is a name for the marked angle?

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help asap
What is a name for the marked angle?