Decide whether each statement is true or false. If a statement is true, say which of Euclid’s five postulates apply to it, then write the converse and contrapositive statements, and then decide which of these statements are true (it may help to rewrite the statements in “if-then” form). If it is false, give a counterexample or explain why.

a. A triangle can be drawn from any three points that are not on the same line.
b. A square can be drawn from any four points not on the same line.
c. When two lines intersect, the four angles they make add to 360 degrees.
d. There is only one parallel line to any given line.

Answers

Answer 1

Answer:

A) True

B) False

C) True

D) False

Step-by-step explanation:

A. This statement is True.

From euclid's postulates, if there are three straight lines that intersect each other another, and the sum of the interior angles formed between one of the straight lines and the other two straight lines is less than 180°, then it can be said that the other two straight lines will cross each other if they are both further extended on the same side of the figure in which the sum of the angles was less than 180° as we earlier said.

The converse statement is;

If three lines are drawn and two of the lines converge, then it means the third line can be drawn in such a way that the sum of the interior angles between this third line and the other two lines would be less than 180°.

The contrapositive statement is;

If the sum of the interior angles between the first line and the other two lines equals 180°,then it means that the other two lines will not intersect each other.

B. This statement is false.

The reason is because 4 sides of a square are always equal in length. As a result,all the 4 interior angles must be equal to 90°.

c. This statement is True.

From the first answer above, we saw that if there are three straight lines that intersect each other another, the sum of the interior angles formed between one of the straight lines and the other two straight lines is less than 180°.

Therefore, on the opposite side of the intersection, the sum of the adjacent angles would be equal to 180°

Thus;

180° + 180° = 360°

The converse statements is;

If two lines meet at a point then it means that the sum of the angles at that point equals 360°

The contrapositive statements is;

If the two lines do not meet at any point, then the sum of the angles on each straight line is 180°

d. This statement is False.

The reason is because there is not only one parallel line to any given line because a parallel line can be drawn from aso many points not even on the line in question.


Related Questions

Write the number 6438 correct to the nearest thousand.

Answers

Answer:

The correct answer would be 6000.

Step-by-step explanation:

To round decimal numbers to the nearest thousand, consider the last four digits that should be modified to the nearest thousandth number.

6000 because the number after 6 is less than 5

what is the difference between AD and BC​

Answers

Answer:

AD means after death and BC means before christ

what is the operation of 24 3/4 = 18

Answers

Answer:

subtraction of 6 3/4 from 24 3/4

Step-by-step explanation:

24 3/4 - 6 3/4 = 18

2 1/2% as a simplified fraction

Answers

Answer:

Step-by-step explanation:

5/2% is in the fraction form

520 is the decimal form

hope this helps

the sum of m and the difference of r and 2

Answers

Answer:

Step-by-step explanation:

Read simply, it is m + (r - 2). It is a very clear statement, so you can depend on the answer.

ill mark brainlist plss help

Answers

Answer:

MARK HIM BRAINLIEST

Step-by-step explanation:

need help. i learned this already i jus need a refresher. thanks

Answers

Answer:

Step-by-step explanation:

4/5

Lamar buys 0.8 gallon of gas to use in the lawnmower the price of the gas is 2.95$ per gallon how much does Lamar play for the gas

Answers

Answer:$2.36

Step-by-step explanation:

2.95 x .8 = 2.36

sin (x-20)° =cos (5x-10)°​

Answers

sin(x - 20)° = cos(5x - 10)°

Expand 5x - 10 in terms of x - 20:

5x - 10 = 5x - 100 + 90

… = 5 (x - 20) + 90

and recall that for all θ, cos(θ + 90)° = - sin(θ)°, so

sin(x - 20)° = cos(5 (x - 20) + 90)°

sin(x - 20)° = - sin(5 (x - 20))°

Replace (x - 20)° = y ° to make this a bit easier to read:

sin(y °) = - sin(5y

Expand the right side in terms of powers of sin:

sin(5θ) = 5 sin(θ) - 20 sin³(θ) + 16 sin⁵(θ)

so the equation becomes

sin(y °) = -5 sin(y °) + 20 sin³(y °) - 16 sin⁵(y °)

16 sin⁵(y °) - 20 sin³(y °) + 6 sin(y °) = 0

Replace z = sin(y °) to get a polynomial equation:

16z ⁵ - 20z ³ + 6z = 0

Factorize the left side:

2z (8z ⁴ - 10z ² + 3) = 0

2z (2z ² - 1) (4z ² - 3) = 0

Solve for z :

• 2z = 0   →   z = 0

• 2z ² - 1 = 0   →   z ² = 1/2   →   z = ± 1/√2

• 4z ² - 3 = 0   →   z ² = 3/4   →   z = ± √3/2

Solve for y in each case above:

• z = sin(y °) = 0   →   y = 0 + 360n   or   y = 180 + 360n

(where n is any integer)

These solutions can be combined into one family, y = 180n.

• z = sin(y °) = -1/√2   →   y = 225 + 360n   or   y = 315 + 360n

• z = sin(y °) = 1/√2   →   y = 45 + 360n   or   y = 135 + 360n

These solutions can also be combined, y = 45 + 90n.

• z = sin(y °) = -√3/2   →   y = 240 + 360n   or   y = 300 + 360n

z = sin(y °) = √3/2   →   y = 60 + 360n   or   y = 120 + 360n

These can be combined as y = 60 + 180n or y = 120 + 180n.

Solve for x in each case:

• y = x - 20 = 180n   →   x = 20 + 180n

• y = x - 20 = 45 + 90n   →   x = 65 + 90n

• y = x - 20 = 60 + 180n   →   x = 80 + 180n

• y = x - 20 = 120 + 180n   →   x = 140 + 180n

* What is the measure of angle x°?

Answers

180-(90+60)
180-150=30

Carter asks 40 of his friends what their favorite type of music is. He records the data in a circle graph to display the results. Carter compares the data for each person he interviewed. Which two types of music account for three-fifths of the people interviewed?


A) Alternative & Jazz
B) Rock & Hip Hop
C) Rock & Alternative
D) Rock & Jazz
E) Alternative & Hip Hop

(This is the hint my teacher gave me, but I still don't understand :/ "So you need to figure out what is three-fifths of 100. If you multiply both the numerator and denominator by 20 (because 20 x 5 = 100) you can find that percentage of people.
3 60
__ = ___
5 100
So which two types of music add to be 60% of the entire circle?")

Answers

Answer:

E) Alternative & Hip Hop

Step-by-step explanation:

A subgenre of hip hop music that encompasses a wide range of styles that are not typically identified as mainstream. AllMusic defines it as follows: "Alternative rap refers to hip hop groups that refuse to conform to any of the traditional stereotypes of rap, such as gangsta, bass, hardcore, pop, and party rap. Instead, they blur genres drawing equally from funk and pop/rock, as well as jazz, soul, reggae, and even folk."[2]

*
3. Combine like terms and simplify the expression.
(2 points)
4 (3x + 2x + 6)
Enter your math answer

Answers

4 ( 3x + 2x + 6 ) = 4 ( 5x + 6 ) = 4 ( 5x ) + 4 ( 6 ) = 20x + 24

PLEASE HELP! ANSWER QUICKLY IF YOU KNOW THIS!!

Answers

Answer:

63

Step-by-step explanation:

Answer:

117°

Step-by-step explanation: We know that the angles of a triangle have to equal 180°. We already know one angle (75°) and we can find the others. Vertical angles are congruents so the angle opposite 42° is also 42° So add 42 and 75 and you get 117. Keep in mind that all the angles have to equal 180 so 180-117 will get you the last angle measure. 180-117= 63. BUT that's not the answer because that is not x and it asks for x. So we know that a straight line also equals 180 that angle that we found that was 63 plus x should get us 180. To find that we do 180-63 and find that x=117° Hope this made sense!

Geraint has 2p and 50p coins in the ratio 20 : 3

Write the ratio of the value of the 2p coins to the value of 50p coins in its
simplest form.

Answers

the answer is 1p:25p :)

Find the distance between the points (7,8) and (7,3).

Answers

the distance is 5 points because it would take 5 points to get 7,8 from 7,3 !

Answer:

(7,5)

Step-by-step explanation

8 - 3 = 5 so (7,5)

Help asappppp !!!!!!!!

Answers

Answer:

None

Step-by-step explanation:

2(x + 10) - 17 = 2x - 2

simplify:

2x + 20 - 17 = 2x - 2

2x + 3 = 2x - 2

subtract 3 from both sides of the equation:

2x = 3x -5

no solution

Hello I need help plese

Answers

Answer:

SA of the sphere is 1333.17 and SA of the circle is 333.29

Step-by-step explanation:

PLS HELP I WILL GIVE BRAINLYEST

Answers

Answer:

hey

Step-by-step explanation:

pls help me then i help u

factorise x^{2} +2x-24[/tex]

Answers

Answer:

(x + 6)(x - 4)

Step-by-step explanation:

x² + 2x - 24

(x + 6)(x - 4)

-4 and +6 multiply to 24 and add to +2.

paul can finish painting a fence in 2 hours if jane douse the job alone she can finish it in 5 hours how long will it take them to finish the same job?

Answers

Answer: 40 minutes

Step-by-step explanation:

2/5 = .4 so it would be 40 minutes

Please can yo help me I am very bad at word problems.

Answers

Answer:

1. 60, 122 feet

2. a + s = 12

6a + 4s = 59

Step-by-step explanation:

I can't do all of them but I'll do the first 2:

1.

let w be the width of the rectangle

Then the length would be 2w + 2

Using those, the perimeter would be:

2w + 2 + 2w +2 + w + w = 364

solving:

[tex]6w + 4 = 364\\6w = 360\\w = 60[/tex]

This means the length would be:

[tex]2(60)+2\\120 + 2\\122[/tex]

2.

let a be the number of adult tickets

let s be the number of student tickets

Then:

The total number of tickets is 12, so:

a + s = 12

And the total cost is 59, so:

6a + 4s = 59

Smart
vb][po. Follett - Drawing D...
Apps
FOCPS Dashboard Springboard - Engli...
03:16
EX
By yourself, use the model to predict the number of
violent crimes in the year 2020.
violent Crimes in the United States
The linear equation that best models this
relationship is y = -31,256x + 1,773,900, where
x represents the number of years since 1993 and
y represents the number of violent crimes.
Number of Violent Crimes Committed
2000000
1800000
1600000
1400000
1200000
1000000
800000
600000
400000
200000
Assuming the trend continues, use the model to
predict the number of violent crimes in the year
2020
06 24 6 8 10 12 14 16 18 20
Years Since 1993
Source: United States Department of Justice, https://ucr.fbi.gov/
from Math Nation, Section 10 - Topic 4. Independent Practice

Answers

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

tinyurl.com/wpazsebu

A school has to select one student to take part in a General Knowledge Quiz.Kelly and Rory took part in six trial quizzes. The following lists show their scores.Kelly 28 24 21 27 24 26Rory 33 19 16 32 34 18Kelly had a mean score of 25 with a range of 7.(a) Calculate Rory's mean score and range.(b) Which student would you choose to represent the school? Explain thereason for your choice, referring to the mean scores and ranges.​

Answers

Four apart



Hope this helps

Priya rewrites the expression 8y−24 as 8(y−3). Han rewrites 8y−24 as 2(4y−12). Are Priya's and Han's expressions each equivalent to 8y−24? Explain your reasoning

Answers

Answer:

sdfsefsesfsfsefsefsefsefsfsefesef

Step-by-step explanation:

Yes, because Han’s expression is 8(y-3) which is 8 x y which equals 8y and then 8 x -3 which equals -24. Priya’s is 2(4y-12). 2 x 4y = 8y and 2 x -12 = -24

Use three different ways to write a ratio for each comparison. A sixth grade basketball team has 3 centers, 5 forwards, and 6 guards.
Forwards to Guards
Centers to Total Players

Answers

Answer:

Try photo math, it will explain it all to you

What number is in between 1.89 and 1.11

Answers

Answer:

Any number between 1.88-1.12

Step-by-step explanation:

1.88 or 1.12

for instance 1.9 , 1.92 ,1.93 1.94 ,1.95,1.96,1.97,1.98,1.99,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,1.91

There are infinite numbers because it is real number

Sqrt 40 =

round all answers to nearest tenth

Answers

Answer:

10

Step-by-step explanation:

sqrt 40 = 6.3

6.3 round to the nearest ten is 10

9514 1404 393

Answer:

  6.3

Step-by-step explanation:

Almost any calculator can tell you the square root of 40 is about 6.324555...

Rounded to the nearest tenth, that is √40 ≈ 6.3

Find the perimeter of the figure. due today

Answers

Answer:

24 in

Step-by-step explanation:

5in + 4in + 9in + 5in + (4in - 3in) = 24in

Solve the exponential equation for x: 7(2x + 2) = 73x.​

Answers

The answer is:

[tex] \frac{14}{59} [/tex]Decimal form is 0.2372 is infinity

Explication:

7(2x +2 )= 73x (Remove the parentheses and sort out 7 and solve for each number that is in the parentheses)

14x+14=73x

14x=73-14

-59x=-14

Both sides are divided by -59 but the -59 / -59 is canceled

Multiply the 7 into the bracket and bring the variables one side to solve for x

Peter is the owner of a hardware supply shop. He has hired you to check his machines calibration prior to starting production on a large order. To check this, you set the machine to create 2.0 inch nails and manufacture a random sample of 200 nails. That sample of nails has an average length of 2.024 inches with a standard deviation of 0.205 inches.


Does this sample provide convincing evidence that the machine is working properly or should it be shut down for repairs?

Answers

Answer:If we compare the p value and the significance level assumed we see thatso we can conclude that we have enough evidence to FAIL reject the null hypothesis, so we can conclude that the true mean is not different from the specification at 1% of signficance.  

Step-by-step explanation:

The machine is working properly based on the convincing evidence provided by the sample.

How to calculate the test statistics.

For the null hypothesis, we would test that:

H0 : p = 2

For the alternate hypothesis, we would test that:

Ha > p = 2

In Mathematics, the test statistics of a given sample is calculated by using this formula:

[tex]Z=\frac{x\;-\;u}{\frac{\sigma}{\sqrt{n} } }[/tex]

Where:

x is the sample mean.u is the mean.is the standard deviation.n is the sample size.

Substituting the given parameters into the formula, we have;

[tex]Z=\frac{2.024\;-\;2}{\frac{0.205}{\sqrt{200} } }\\\\Z=\frac{0.024}{\frac{0.205}{14.14} }\\\\Z=\frac{0.024}{0.0145 }[/tex]

Z = 1.66.

For the p-value:

P(Z > Zo) = P(Z > 1.66)

P(Z > 1.66) = P(Z < -1.66)

P(Z < -1.66) = 0.0485.

From the z-table, a z-score of 1.66 corresponds has a p-value of 0.0485. Therefore, the p-value for this test is 0.0485 < 2 while assuming a confidence level of 95%.

In conclusion, we fail to reject the null hypothesis because 0.0485 < 2.

Read more on null hypothesis here: https://brainly.com/question/14913351

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