Explain the difference between a concave polygon and a convex polygon. (please please pleaseeeeee help)

Answers

Answer 1

Answer:

Every polygon is either convex or concave. The difference between convex and concave polygons lies in the measures of their angles. For a polygon to be convex, all of its interior angles must be less than 180 degrees. Otherwise, the polygon is concave.


Related Questions

Subtract x2 - 2x - 6 from - 6x + 5

Answers

x^2-2x-6-6x+5= x^2-8x-1

The Hu Family goes out for lunch, and the price of the meal is $53. The sales tax on the meal is 7%, and the family also leaves a 15% tip on the pre-tax amount. What is the total cost of the meal?
PLEASEEE HELPPP I WILLL MARK BRAINLIEST

Answers

the answer would be $64.66

write an expression of the following. 6 times a number decreased by 5

Answers

Answer:

6x-5

Step-by-step explanation:

Alright let's begin.

6 times a number means 6 times x. So 6x.

Then when it says decreased by 5 it means you subtract 5!

Your expression would look like this:

6x-5

Hope it helps! Mark brainliest if possible

If you want to graph the relationship to compare the unit prices, what should the x- axis and the y-axis represent

Answers

Answer:

it represents the following

read in my explanation

Step-by-step explanation:

A bar chart is a graph with rectangular bars. The graph usually compares different categories. Although the graphs can be plotted vertically (bars standing up) or horizontally (bars laying flat from left to right), the most usual type of bar graph is vertical.

The horizontal (x) axis represents the categories; The vertical (y) axis represents a value for those categories. In the graph below, the values are percentages.

Answer:

The unit price in this situation is the approximate cost per pound of clementines. So, the x-axis should represent the number of pounds. The y-axis should represent the cost.

Step-by-step explanation:

Plato correct answer word for word


[tex]74 \times 54 + 7 \div 20[/tex]
slove this?

Answers

I think it’s 3,996.35 if you use PEMDAS and you multiply 74 by 54 to get 3,996 then you divide 7 over 20 to get .35 and you then add them together to get 3996.35
74 x 54 = 3,996

7\ 20 = 0.35

3,996 + 0.35 = 3,996.35

An absolute value inequality is a compound inequality. True or False

Answers

Answer : true

Step-by-step explanation:

Professor Burger orders flowers to be delivered to his mother. The flowers cost $59.95, not including tax. A bouquet of flowers is shown. Its price tag reads fifty-nine dollars and ninety-five cents. If there is a 6% sales tax, what is the total cost of the flowers to the nearest cent? Enter the correct answer in the box.

Answers

Answer:

$63.55

Step-by-step explanation:

Taxes are charges paid by individuals and enforced by the government in other to fund government spending and various public expenditures.

The flowers cost $59.95 and tax is 6%.

Tax = 6% of flower cost = 0.06 × $59.95 = $3.6

The  total cost of the flowers is the sum of tax and the cost of flowers, hence:

Total cost of the flowers = $59.95 + $3.6

Total cost of the flowers = $63.55

PLEASE ANSWER QUICKLY


Samantha plays on the softball team for her school. She strikes out twice every nine times
she is at bat. If she struck out 14 times this season, how many times was she at bat?
3.1
07
54
O
63

Answers

Answer:

63 :)

Step-by-step explanation:

help!!!I don’t get this!!

Answers

Answer:

C is the correct answer

Step-by-step explanation:

You would find the answer to that equation by finding the root of 30

So it's C

Hope I helped :)

Please consider Brainliest :)

pleaSe i need help brainlist if u get it right

Answers

Answer:

62.6

Step-by-step explanation:

The parking spaces in a city lot were created by painting rows of parallel line segments, then painting a line that cuts through each of the parallel segments. A sketch of two parking spaces is shown below. 2 diagonal parallel lines are cut by a horizontal transversal. Where the first parallel line intersects the transversal, the top right angle is angle 1. Where the second parallel line intersects the transversal, the top left angle is angle 2. If m∠2 = 115°, what is m∠1?

Answers

Answer:

65°

Step-by-step explanation:

The consecutive interior angles theorem states that if two parallel lines are cut by a transversal line then the resulting pair of consecutive angles formed are supplementary (that is they add up to 180°).

Given that the painting rows are parallel to each other and a painted line (transversal) cut the parallel lines forming consecutive interior angles m∠1 and m∠2. Therefore:

m∠1 + m∠2 = 180°

m∠1 + 115 = 180

m∠1 = 180 - 115

m∠1 = 65°

Answer:

65

Step-by-step explanation:

just did it in edge  2020

Solve for w in the proportion.

Answers

Answer:

w=40

Step-by-step explanation:

The value of x is at most 450.
a
x 450
c
x ≤ 450

d
x ≥ 450

Answers

Answer:

Junior PSAT

Training Packet

2016-17

Math Department  

Answer Key

Section 3: Math Test — No Calculator

QUESTION 1.

Choice C is correct. Subtracting 6 from each side of 5x + 6 = 10 yields 5x = 4.

Dividing both sides of 5x = 4 by 5 yields x =

_4

5

. Te value of x can now be

substituted into the expression 10x + 3, giving 10 ( _4

5 ) + 3 = 11.

Alternatively, the expression 10x + 3 can be rewritten as 2(5x + 6) − 9, and

10 can be substituted for 5x + 6, giving 2(10) − 9 = 11.

Choices A, B, and D are incorrect. Each of these choices leads to 5x + 6 ≠ 10,

contradicting the given equation, 5x + 6 = 10. For example, choice A is

incorrect because if the value of 10x + 3 were 4, then it would follow that

x = 0.1, and the value of 5x + 6 would be 6.5, not 10.

QUESTION 2.

Choice B is correct. Multiplying each side of x + y = 0 by 2 gives 2x + 2y = 0.

Ten, adding the corresponding sides of 2x + 2y = 0 and 3x − 2y = 10 gives

5x = 10. Dividing each side of 5x = 10 by 5 gives x = 2. Finally, substituting

2 for x in x + y = 0 gives 2 + y = 0, or y = −2. Terefore, the solution to the

given system of equations is (2, −2).

Alternatively, the equation x + y = 0 can be rewritten as x = −y, and substituting x for −y in 3x − 2y = 10 gives 5x = 10, or x = 2. Te value of y can then

be found in the same way as before.

Choices A, C, and D are incorrect because when the given values of x and

y are substituted into x + y = 0 and 3x − 2y = 10, either one or both of the

equations are not true. Tese answers may result from sign errors or other

computational errors.

QUESTION 3.

Choice A is correct. Te price of the job, in dollars, is calculated using

the expression 60 + 12nh, where 60 is a fxed price and 12nh depends on the

number of landscapers, n, working the job and the number of hours, h, the job

takes those n landscapers. Since nh is the total number of hours of work done

when n landscapers work h hours, the cost of the job increases by $12 for each

hour a landscaper works. Terefore, of the choices given, the best interpretation

of the number 12 is that the company charges $12 per hour for each landscaper.

Choice B is incorrect because the number of landscapers that will work each

job is represented by n in the equation, not by the number 12. Choice C is

incorrect because the price of the job increases by 12n dollars each hour,

which will not be equal to 12 dollars unless n = 1. Choice D is incorrect

because the total number of hours each landscaper works is equal to h. Te

number of hours each landscaper works in a day is not provided.

QUESTION 4.

Choice A is correct. If a polynomial expression is in the form (x)2

+ 2(x)(y) +

(y)2

, then it is equivalent to (x + y)2

. Because 9a4

+ 12a2

b2

+ 4b4

= (3a2

)2

+

2(3a2

)(2b2

) + (2b2

)2

, it can be rewritten as (3a2

+ 2b2

)2

.

Choice B is incorrect. Te expression (3a + 2b)4

is equivalent to the product

(3a + 2b)(3a + 2b)(3a + 2b)(3a + 2b). Tis product will contain the term

4(3a)3

(2b) = 216a3

b. However, the given polynomial, 9a4

+ 12a2

b2

+ 4b4

,

does not contain the term 216a3

b. Terefore, 9a4

+ 12a2

b2

+ 4b4 ≠ (3a + 2b)4

.

Choice C is incorrect. Te expression (9a2

+ 4b2

)2

is equivalent to the

product (9a2

+ 4b2

)(9a2

+ 4b2

). Tis product will contain the term (9a2

)

(9a2

Answer:

that looks hard

Step-by-step explanation:

b

A swimmer is looking for a species of fish along the coast line. She dives 12 feet below the surface of the ocean. Then she dives down 9 more feet. She swims back up 10 feet and down another 6 feet before she finds the species of fish she is looking for. What was the depth at which the swimmer finds the fish?

Answers

Answer:

17 feet

Step-by-step explanation:

Given

Downward Movements: 12 feet; 9 feet; 6 feet

Upward Movement: 10 feet

Required

Determine the position at which the swimmer got the fish

First, we need to add up the downward movements;

[tex]Downward = 12ft + 9ft + 6ft[/tex]

[tex]Downward = 27ft[/tex]

Then subtract the upward movement

[tex]Position = Downward - Upward[/tex]

[tex]Position = 27ft - 10ft[/tex]

[tex]Position = 17ft[/tex]

Find an
equation for the perpendicular bisector of the line segment whose endpoints
e (-3, -8) and (5,-4).
are

Answers

Answer:

[tex]y=-2x-4[/tex]

Step-by-step explanation:

Perpendicular Bisector

The bisector of a segment defined by points (x1,y1) and (x2,y2) must pass by the midpoint of the segment.

The midpoint (xm,ym) is calculated as follows:

[tex]\displaystyle x_m=\frac{x_1+x_2}{2}[/tex]

[tex]\displaystyle y_m=\frac{y_1+y_2}{2}[/tex]

The endpoints of the segment are (-3,-8) and (5,-4), thus the midpoint M is:

[tex]\displaystyle x_m=\frac{-3+5}{2}=1[/tex]

[tex]\displaystyle y_m=\frac{-8-4}{2}=-6[/tex]

Midpoint: M(1,-6)

Let's find the slope of the given segment. The slope can be calculated with the formula:

[tex]\displaystyle m_1=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\displaystyle m_1=\frac{-4+8}{5+3}=\frac{1}{2}[/tex]

If the bisector is also perpendicular, its slope m2 and the slope of the segment m1 must comply:

[tex]m_1.m_2=-1[/tex]

Solving for m2:

[tex]\displaystyle m_2=-\frac{1}{m_1}=-\frac{1}{\frac{1}{2}}=-2[/tex]

Once we have the slope -2 and the point through which our line must pass (1,-6), we compute the equation in its point-slope form:

[tex]y-y_o=m(x-x_o)[/tex]

[tex]y-(-6)=-2(x-1)[/tex]

Operating

[tex]y+6=-2(x-1)[/tex]

[tex]y+6=-2x+2[/tex]

Rearranging

[tex]\boxed{y=-2x-4}[/tex]

Find the midpoint of the line segment with the given endpoints.
1. (-6,3) and (-6,-1)
2. (-3,-1) and (0,9)

Answers

Answer:

1. (-6,1)

2. (-1.5,4)

Step-by-step explanation:

1. (-6,3) and (-6,-1)

Midpoint = [tex](\frac{-6+ -6}{2} , \frac{3 + -1}{2}) = (-6, 1)[/tex]

2. (-3,-1) and (0,9)

Midpoint = [tex](\frac{-3 + 0}{2} , \frac{-1 + 9}{2} ) = (-1.5,4)[/tex]

What is the approximate distance between the pints (9, 2) and (4, 8)?

Answers

Answer: aproximently d

Step-by-step explanation:

How do you divide a mixed number into a whole number

Answers

Answer:

Rules for division with a mixed number and a whole number

The mixed number is converted into an improper fraction and the whole number is written as a fraction with denominator 1.

 2.Division of the fractions is converted into a multiplication operation by multiplying the improper fraction with the reciprocal of the whole number.

 3.The resulting fraction, if required, is written as a mixed number in simplest   form.

I WILL GIVE YOU EXAMPLES AND LET ME JUST HOPE YOU GET IT ;)Example1: Divide. Write your answer as a mixed number in simplest form. 213÷7 Solution Step 1: First, we write the mixed number 213 as an improper fraction 213=(2×3+1)3=73; 7=71 Step 2: The division is converted into multiplication as follows 213÷7=73÷71=73×17 Step 3: Multiplying numerators and denominators 73×17=(7×1)(3×7)=721 Step 4: 721 can be simplified and written as follows 721=13 Step 5: So, 213÷7=13example2: Divide. Write your answer as a mixed number in simplest form. 5÷134 Solution Step 1: First, we write the mixed number 134 as an improper fraction 134=(1×4+3)4=74; 5=51 Step 2: 5÷134=51÷74=51×47 Step 3: Multiplying numerators and denominators 51×47=(5×4)(1×7)=207 Step 4: 207 can be written as a mixed number as follows 207=267 Step 5: So, 5÷134=267OK HOPE THIS HELPS YOU :')PLEASE MARK ME BRILLIANT :3 THANK YOU -

Answer:First step: Write the whole number and the mixed number as improper fractions.

Second step: Write the reciprocal of the divisor, 2/5, and multiply.

Third step: Simplify, if possible. ...

Fourth step: Perform the simple multiplication of the numerators and the denominators.

Step-by-step explanation:

Which simplified ratio correctly compares 12 yard to 20 feet?

A. 5:9

B. 3:5

C. 9:5

D. 5:3

Answers

Answer:

The answer is B

Step-by-step explanation:

If you look at the problem you can put 12 and 20 into a ratio like this

12:20

then if you simplify it by like terms say 4

12 divided by 4 is 3

20 divided by 4 is 5

3:5

= B

I think it’s B. but it might be D. I don’t know but I think it’s probably one of those. *Btw* I’m sorry if I’m wrong please don’t be mean.

What is -6 to the second power times -6 to the fifth power

Answers

Answer:

2799366

Step-by-step explanation:

Which sentence contains a word that is misspelled because a silent letter has been left out?

A
She completely forgot the chords to the song.

B
Courtesy costs nothing, but it pays off in huge dividends.

C
Since rent prices in the city were higher than most morgages, she tried to buy a house.

D
Between traffic jams and a lack of nearby parking, we arrived very late to the comic convention downtown.

Answers

Answer:

C

Step-by-step explanation:

Morgages is spelled mortgages

C

Morgages is spelled wrong. It’s actually spelled mortgages.

A 4-digit number contains at least one even digit. How many such numbers are there? Please help me. I will mark brainliest

Answers

Given:

A 4-digit number contains at least one even digit.

To find:

How many such numbers are there?

Solution:

Digits are 0,1,2,3,4,5,6,7,8,9.

Number of odd digits = 5

Number of even digits = 5

4-digit numbers are from 1000 to 9999.

Total number of 4-digit numbers = 9000

Possible ways to get odd digits on all the 4 places is

[tex]5\times 5\times 5\times 5=625[/tex]

It means 625 numbers are their in which all 4 digits are odd.

To find total 4-digit number that contains at least one even digit, subtract the numbers which contains only odd numbers from the total 4-digit numbers.

[tex]9000-625=8375[/tex]

Therefore, total 4-digit number that contains at least one even digit is 8375.

Solve for x.
-3(2x - 3) + x +4= -27

Answers

Distribute -3(2x-3) which gives you -6x+9+x+4=-27
Combine like terms– -5x+13=-27
Subtract 13 from both sides which gives you -5x=-40
Divide both sides by -5 which gives you
x=8

Elena goes for a long walk. This graph shows her time and distance traveled throughout the walk.







What was her fastest speed, in miles per hour?



Do not include units (miles per hour) in your answer.

Answers

Answer:

Actually it is 4 mph.

Step-by-step explanation:

I know because I had it on a test I just took.

Her fastest speed was 4 miles per hour.

Given that,

Elena goes for a long walk.

This graph shows her time and distance traveled throughout the walk.

We have to find,

What was her fastest speed, in miles per hour?

According to the question,

The graph shows the time and distance traveled throughout the walk.

The distance traveled in every hour is given as follows.

In the given graph at the first point, the distance traveled in 1 hour is 3 miles.

At the second point, the distance traveled in 1.5 hours is 0 miles.

At the third point, the distance traveled in 2 hours is 5 miles.

At the fourth point, the distance traveled in 3 hours is 7 miles.

At the fifth point, the distance traveled in 4 hours is 9 miles.

Therefore, Her fastest speed was 4 miles per hour.

For more details refer to the link given below.

https://brainly.com/question/24684377

We want to factor the following expression:
16x4 – (y - 1)
We can factor the expression as (U+V)(U - V) where U and V are either constant integers or single-variable expressions.
What are U and V?

Answers

Answer:

Answer: U = 4x^2 and V=y-1

factored : (4x^2+y-1)(4x^2-y+1

Step-by-step explanation:

The value of U and V are 4x² and (y-1) respectively and the factor of the expression is (4x² + (y-1)) and (4x² + (y+1)) option (C) is correct.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We want to factor in the following expression:

16x⁴-(y-1)²

We can factor the expression as (U+V)(U-V) where U and V are either constant integers or single-variable expressions.

1) What are U and V?

2)Factor the expression.​

We have an expression:

= 16x⁴-(y-1)²

or

= (4x²)²-(y-1)²

Using the identity:

a² - b² = (a + b)(a- b)

(4x²)²-(y-1)² = (4x² + (y-1))(4x² + (y+1))

The value of U = 4x²

V = (y-1)

The factor of the expression is:

(4x² + (y-1)) and (4x² + (y+1))

Thus, the value of U and V are 4x² and (y-1) respectively and the factor of the expression is (4x² + (y-1)) and (4x² + (y+1))

Learn more about the expression here:

brainly.com/question/14083225

#SPJ2

i don’t understand this

Answers

Answer:

it means that

y–x+6.8= 7.2–(–2)+6.8

–(–) will change into +

=7.2+2+6.8

=7.2+2.0+6.8

=16

hope u understood.....

Please mark me as Brainliest

Read the passage from "Annabel Lee.”

And this was the reason that, long ago,

In this kingdom by the sea,

A wind blew out of a cloud, chilling

My beautiful Annabel Lee;

So that her highborn kinsmen came

And bore her away from me,

To shut her up in a sepulchre

In this kingdom by the sea.

The word choice in the passage creates a mood of

anxiety.
loneliness.
love.
romance

Answers

i would say loneliness, because she is taken by a kings men .. and it’s not him

Answer:

The correct answer in this question is B. Loneliness.

Step-by-step explanation:

The Man speaking in this passage of "Annabel Lee" is lonely now that his beloved is shut away far from him in the kingdom of the sea.

Find the slope of the line below. *

Answers

Answer:

-2

Step-by-step explanation:

Write an algebraic expression for the word expression.

the sum of 3 and a number x

The expression is .

Answers

Answer:

3 + x

Step-by-step explanation:

Sum means to add, so you would just add 3 and x (since they haven't given an actual number and only a variable).

The sum of the number 3 and the variable x will be (x + 3).

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

In the linear expression, the degree of the variable is one.

The sum of 3 and a number x.

Then the expression will be

⇒ 3 + x

The number 3 is a constant number and the term x is a variable.

The expression (x + 3) is a linear expression because the degree of the expression is one.

The number of the variable is one, then the expression is linear expression of one variable.

Thus, the sum of the number 3 and the variable x will be (x + 3).

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

Write an algebraic expression for the word phrase.

10 times the product of g and h.

a. 10 (g+h)
b. 10 (g-h)
c. 10 (g/h)
d. 10gh

Answers

The answer is D) 10gh

Answer: I think the correct answer would be d

Step-by-step explanation:

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