Mathematics High School

20 points !!!!!
Which of the following is a counterexample for the hypothesis "All parallelograms are rectangles"?

20 Points !!!!! Which Of The Following Is A Counterexample For The Hypothesis "All Parallelograms Are

Answers

Answer 1

Answer:

The answer would be B

Step-by-step explanation:

A non-square rhombus. A non-square rhombus (also known as a rhombus) is different from a square with respect to its internal angles. Unlike a square, a non-square rhombus does not have all its internal angles equal to 90°. The number of lines of symmetry in a non-square rhombus is 2, whereas, a square has 4 lines of symmetry.

Answer 2

The required counterexample is rhombus for the given hypothesis "All parallelograms are rectangles" which is the correct answer would be option (B).

What is the hypothesis?

In statistics, hypothesis testing is the process by which an analyst tests an assumption about a population's parameter. Using sample data, hypothesis testing is performed to examine the plausibility of a theory.

A rhombus that isn't square. In terms of internal angles, a non-square rhombus (also known as a rhombus) differs from a square. A non-square rhombus, unlike a square, does not have all of its internal angles equal to 90°. A non-square rhombus has two lines of symmetry, whereas a square has four lines of symmetry.

Therefore, the required counterexample is rhombus for the given hypothesis "All parallelograms are rectangles"

Hence, the correct answer would be an option (B).

To learn more about the hypothesis here:

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Related Questions

If 7 workers take 500 hours to finish a project, how long will it take 14 workers to complete the same project?

Answers

Answer:

250 hours

Step-by-step explanation: increasing the number of workers will make the project go faster. So they multiplied the 7 by 2 so now there are 14 workers so then the time it'll take to finish the project would be cut in half because now they have twice the numbers of workers. correct me if I'm wrong

A rectangle has vertices (j,k) , (l,k) and (l,l). Find the fourth vertex

Answers

Answer:

(j,l)

Step-by-step explanation:

It's the only combination left

38=p−15

PLEASE HELP MEHHHHH

Answers

Answer:

p=23

Step-by-step explanation:

Answer:

P=23

Step-by-step explanation:

38-15=23

p=23

Hope this helps

Have a great day!

I really need help for this question, I would appreciate any help thank you.

Answers

Answer:

Step-by-step explanation: so a straight line always equals to 180 where 41 is its a straight line so we know the total should be 180 degrees so to find x you need to subtract 180 minus 41 which equals 139 which is your answer im not super sure but trust your gut im trusting mines with this one so i hope this helps

Can somebody help me with this?

Answers

the answer is C, 40, angle c for triangle abc is 50 bc the total of it and 130 must equal 180. so if you subtract the angle you are given, 90, and the new angle, 50, from 180 (total a triangle should have) then your answer is 40.

The numbers –12, –7, –2, 3, . . . follow a pattern. What are the next three numbers in this pattern? A. 8, 13, 18 B. 5, 10, 15 C. 2, 8, 13 D. 8, 14, 17

Answers

Answer:

A.

Step-by-step explanation:

5 is added each time

3 + 5 = 8

8 + 5 = 13

13 + 5 = 18

Answer:

8,13,18

Step-by-step explanation:

Left hand or right hand?

Answers

Answer:

right

Step-by-step explanation:

.

on a certain day the temperature at midday was 14°c.By midnight the temperature had fallen by 17°c what was the temperature at midnight​

Answers

Answer:

-3c

Step-by-step explanation:

Answer:

-3c

Step-by-step explanation:

according to my calculations this is right

MATHHHHHHHHHHHHHHHHHHHHHHHHHH

Answers

Answer:

x intercept = 3

y intercept = 2

Step-by-step explanation:

x intercept is 3

y intercept is 2

A paper company produces 4,050 notebooks in 5 days. How many notebooks can it produce in 13 days?

Answers

Answer:

10530

Step-by-step explanation:

4050 notebooks in 5 days

                                 1 day=810

13 days=10530

please mark as brainliest!!!

Sara rolls a fair dice 90 times. How many times would sara be expected to roll a five?​

Answers

Answer:

15 times

Step-by-step explanation:

there are 6 numbers on a die so divide 90 by 6 and you get 15

Answer:

It will be 15 times

Step-by-step explanation:

Hope this helped have an amazing day/month/year!

HELp please!!!!!!!!!!!!!!!!!!!!!!11

Answers

Answer:

it’s 15x+30y-220

Step-by-step explanation:

Because you distribute and then you add the like terms

I need help with the question please! I'm having a hard time answering it!

Answers

Answer:

small packet: 1.56/22=£0.071

medium: 2.87/38=£0.076

large: 4.67/65=£0.072

small packet is best as it has the lowest price per nail

Find the change in temperature if the temperature rises -18⁰f to 15⁰f

Answers

the change of temperature is 35f

Luann wrote an expression showing 8 times the difference of y and 3. Select all expressions that are equivalent to the value of Luann’s expression.


8y−3
8y−11
8y−24
8y+24
8(y−3)

Answers

Answer:

8y-24 and 8(y-3)

Step-by-step explanation:

write the ratio in simplest form 34 to 52
HELP PLS QUICK

Answers

Answer:

17 to 26

Step-by-step explanation:


Plz help I still have a 33% in my class and I’m trying to do as much imagine math as I can

Answers

Answer:

change in y 3-9/ change in x 4-1  =-6/3  = -2  there u go

Step-by-step explanation:

One number is 7 more than twice another tumber. The sum of the numbers is 22. What is
one of the numbers?

Answers

Answer:

5

Step-by-step explanation:

for the question, let's make a variable

Assume one number is X and we can get a equation like this:

X + 2X+7 = 22

X + 2X = 22 - 7

3X = 15

X = 5

What is the solution to the system of equations graphed below?
y--x+2
y= 5x+ 28
OA. (4, 8)
OB. (0, 2)

Answers

Answer:

4,8 :)

Step-by-step explanation:

Answer:

(-4, 8)

Step-by-step explanation:

other answer was close but wrong

How do you write equations for horizontal and vertical lines?

Answers

Answer:

y=_

x=_

Step-by-step explanation

horizontal for y=_

vertical for x=_

is y=3x^2 a function?

Answers

Answer:

y=3x-2 is a function because it passes the vertical line test

Answer:

No

Step-by-step explanation:

Cant have any variables

What percentage of this grid is shaded?
b)
How many more squares need to be shaded
so that 80% of the grid is shaded?

Answers

Answer:

52% of the grid is shaded. You would need 7 more squares in order to get 80%.

Step-by-step explanation:

There are 25 boxes. You want to figure out how much each box is worth.

So,

You divide 100 by 25. You will get an answer of 4.

So now you know how much each box is worth.

There are 13 boxes shaded in, so you multiply 13 by 4 to get 52.

Keep adding boxes in order to get 80%. For example, 52%, 56%, 60%, until you get to 80%. Then see how many boxes you added up to get 80%.

We would need 7 more squares in order to get 80%. Thus, 52% of the grid is shaded.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

There are 25 boxes. we want to figure out how much each box is worth.

So,

100 / 25 = 4

Now, we know how much each box is worth.

There are 13 boxes shaded in,

so 13 x 4 = 52.

Keep adding boxes in order to get 80%.

For example, 52%, 56%, 60%.

Learn more about the unitary method;

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find the measurement indicated in each parallelogram

Answers

Answer:

UW = EW+UE=2×EW because, EW=UE

7x-2=2×6= 12

7x=14

x=14/7

x=2

2 is the right answer.

Can someone please give me the 3 different combinations i dont know which combinations to do

Answers

They can all equal 5
7 and -2
9 and -4
5 and 0

Product of square of x and cube of y

Answers

Where’s the image? I don’t see it

RATEE MEEE!?!!!!!!>???????????????????????!!!!!!!!!!!!!!!​

Answers

Answer:

100/10 bbg ;)

Step-by-step explanation:

i forgot the name of the show but ykk

6
Evaluate without using a calculator. Use the Pythagorean identities rather than reference triangles. Find tan and cot 0 if sec 0 = 5
and sin <0.
tanecote =
(Simplify your answers, including any radicals. Use integers or fractions for any numbers in the expressions.)

Answers

Answer:

b

Step-by-step explanation:

answer first and u will get a brain, a few free questions, thanks, or a rating.

Answers

It’s B because if you divide 20/100it will equal 0.2 which also equals 0.20 or 20%.

A seed company planted a floral mosaic of a national flag. The perimeter of the flag is Determine the​ flag's width and length if the length is ft greater than the width.

Answers

Answer:

Step-by-step explanation:

lag is Determine the​ flag's wlag is Determine the​ flag's wlag is Determine the​ flag's w this mena that the wiatgh

Answer:

I need help on this.

Step-by-step explanation:

1. 3/5 divided by 6.
2. 10/8 divided by 5
3. 6 divided by 3/8.

Answers

1. 1\10

2. 1/4

3.16

Step-by-step explanation:

your welcome

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