Cho hình bình hành ABCD . Gọi E , F , M , N là trung điểm AB , BC , CD , DA . Cmr : a) Ba vectơ EF , AC , MN cùng phương . b) vectơ EF = vectơ NM. Suy ra : EFMN là hình bình hành

Answers

Answer 1

Answer:

Không ai yêu bạn

Step-by-step explanation:

Bạn là người Việt Nam, ruộng lúa của bạn có hư không? Tốt nếu nó được.


Related Questions

Which shows another way to write 6 - 9?

9 - 6

9 - (-6)

6 + 9

6 + (-9)

Answers

the answer is 6+(-9)
6+(-9) is another way to write 6-9

3(2x+9)= -10 + 31
x equal
(simplify your answer)

Answers

Answer:

the answer is x = -1

so yea

Answer:

very easy first open the bracket and then Bodmas

How many solutions exist for the given equation?

0.75(x + 40) = 0.35(x + 20) + 0.35(x + 20)

Answers

Answer:

0.35

Step-by-step explanation:

Answer:

Just one

Step-by-step explanation:

Got it right on Edge 2022

1 1/2 x 2 1/6 in a simple form

Answers

Answer:

1

1

2

+

2

1

6

Convert

1

1

2

to an improper fraction.

Tap for more steps...

3

2

+

2

1

6

Convert

2

1

6

to an improper fraction.

Tap for more steps...

3

2

+

13

6

To write

3

2

as a fraction with a common denominator, multiply by

3

3

.

3

2

3

3

+

13

6

Write each expression with a common denominator of

6

, by multiplying each by an appropriate factor of

1

.

Tap for more steps...

3

3

6

+

13

6

Combine the numerators over the common denominator.

3

3

+

13

6

Simplify the numerator.

Tap for more steps...

22

6

Cancel the common factor of

22

and

6

.

Tap for more steps...

11

3

The result can be shown in multiple forms.

Exact Form:

11

3

Decimal Form:

3.

¯

6

Mixed Number Form:

3

2

3

Step-by-step explanation:

Answer:

3.25 or 3 1/4

Step-by-step explanation:

Convert both fractions into improper fractions: 3/2 * 13/6

Multiply 3/2 and 13/6 together: 39/12

Divide the fraction by 3/3: (39/3) / (12/3)

New fraction: 13/4

The mixed number form: 3 1/4

Decimal form: 3.25

what is the degree of polynomial ? f(x)=(x+6) (x_3) power of 2​

Answers

Answer:

the degree = 4

Step-by-step explanation:

[(x+6)(x-3)]²

= x⁴+6x³-27x²-108x+324

What is 223*445=
What is 2+2

Answers

Answer:

99235

4

Explanation: Addition, and Multiplication

When a number is halved and 5 is added, the result ie 8 more than the original number. Find the number​

Answers

Answer:

It would be 6.

Step-by-step explanation:

6 halved is 3.

3, then 5 added is 8.

Select all of the points which satisfy the linear inequality below.

-2x + 3y > 4

Answers

Answer:

x  <  − 2 +  3 y/ 2 linear inequality for x

y > 4/3 + 2x/3 linear inequality for y

Step-by-step explanation:

The point which satisfies the linear inequality is (-1,5) so option (C) is correct.

What is inequality?

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

As per the given inequality,

-2x + 3y > 4

Put (-1,5) into the above inequality,

-2(-1) + 3(5) > 4

2 + 15 > 4

17 > 4 (True) thus  (-1,5) will satisfy the inequality.

The rest points are not satisfying the inequality.

Hence " The point which satisfies the linear inequality is (-1,5)".

For more about inequality,

brainly.com/question/20383699

#SPJ2

The complete question is attached below,

PLEASEEE HELPPPPPn nxndhdndjd

Answers

Answer:

In a total triangle, there are 180 degrees.

So we add the given degrees and add a variable(our unknown value) to make it equal 180

65 + 57 + X = 180

add like terms

122 + X = 180

inverse property of addition is subtraction

-122       -122

X = 58 degrees

Answer:

The answer is 58.

Step-by-step explanation:

65+57=122

180-122=58

-2 13/15 -0.75 2 from greatest to least

Answers

Answer:

greatest (2, 13/15, -0.75, -2) least

Step-by-step explanation:

209
У.
Х
120°
y = [ ? 1°

Answers

Answer:

140

Step-by-step explanation:

one exterior = the sum of two interior

A rectangle has an area of (4x+12) square units. Write Three multiplication expressions that can represent the product of the length and the width of the rectangle.

Answers

Answer:

This is easy to do on your own.  Just think of 3 numbers, put them in for x, solve, and show your work.

Step-by-step explanation:

If Tristan wants to stretch the spring by 9 inches, how many kilograms of weight must he apply to it?

Answers

Answer:

Step-by-step explanation:

Substitute y = 9 into the equation y = 3x, or locate the answer on the graph:

y = 3x

9 = 3x.

Divide both sides of the equation by 3:

 [tex]\frac{9}{3}[/tex]  =  [tex]\frac{3x}{3}[/tex]

       3 = x

The spring stretches 9 inches with 3 kilograms of weight attached to it.

The recipe calls for 223 cups sugar. If Brody is tripling the recipe, how much sugar will he need?

Answers

Answer:

669 cups of sugar

Step-by-step explanation:

223 x 3 = 669

Which is the correct first line for dividing the function f(x)= x^3-12x+16 by (x-2) using synthetic division

Answers

Answer:

C

Step-by-step explanation:

Order these numbers least to greatest 0.7,1.4,3.9,2.2,1.8

Answers

Answer:

0.7, 1.4, 1.8, 2.2, 3.9

Step-by-step explanation:

basic math lol, hope you do well!

Answer:

LEAST TO GREATEST

0.7,1.4,1.8,2.2,3.9

Step-by-step explanation:

0.7= 0.70

1.4

1.8= (1.8-1.4=.4) 1.8 is bigger keep doing this until finally done.

working with bigger numbers in the first place (before the decimal) then find if the number is bigger than that.

plz help me it would mean the world for me thank you sweetie :)

Answers

Hey, not quite sure how to help you but I just wanted to say that you've got this! Whatever endeavors or problems you are facing right now I know that you are able to triumph over them. If it means anything at all you have someone rooting for you on my end. Have a great day!

Johnny went out to dinner with his two friends. Johnnys meałeast $12.32, Marks

meal cost $11.23, and Annas meal cost $7.89. After a tax of 8% and chipsi 5%,

What is the total amount of the bill?

Answers

Answer:

$35.53

Step-by-step explanation:

12.32+11.23+7.89=31.44

31.44*0.08(for the 8% tax)=2.52

31.44*0.05=1.57

31.44+2.52+1.57=35.53

HELP- NEEDED SOLUTION PLEASE

Answers

Answer:

A) Fraction to Decimal

1. 0.17

2. 0.75

3. 0.375

B) Decimal to Fraction

1. 8/100

2. 312/100

3.501/100

Jeanette earn $33 in 8 hours. At the rate, how much would she earn in 5 hours?

Answers

Answer:

If you made $33 in 8 hours, then you should divide 8 into 33 to see how much you make per hour. 8÷33= (explaining how to get answer) can 8 go into 3? No. put a zero on top of the first three. Now can 8 go into 33? yes, 4 times, 4×8= 32, so we have 1 left over. add 2 decimals to the number so that it is $33.00, (still that same number just with zeros on the end). So far the answer is $04.??. How many times can 8 go into 10? 1 time with 2 left over, so write the one on top of the .0! Now with 2 left over we have to see how many times 8 can go into 20, 8×2= 16 16+8=24, so it can only go in 2 times without going over 20. Now that we have rounded it up to 2 decimals we don't have to keep going and your answer is

$4.12 times that by 5 and you will get the final answer.

4.12

×   5

20.60

Hope I explained I okay!

Step-by-step explanation:

Answer:

about 20.63

Step-by-step explanation:

pa answer po plss pls

Answers

Answer:

It is commutative property   (in my opinion)

Step-by-step explanation:

-1 + 5= 4       5 - 1 =4

Both give you the same answer, thus the arrangement of the INTEGERS does not matter.

Note that I mentioned integers since this is not possible for natural numbers alone. They are not closed under subtraction. Here you -1 and 5 both of  which are integers, their SUM  give you an integer as well.

Hope this explanation helps!!

The cost for a business to produce "x" television commercials in 1 year is $225x + $17,000. How many commercials can the company produce in 1 year at a cost of $35,000

Answers

We are required to find how many commercials the company can produce in year at a cost of $35,000

The company can produce 80 commercials in year at a cost of $35,000

Given:

C(x) = $225x + $17,000

If C(x) = $35,000

Then,

C(x) = $225x + $17,000

35,000 = 225x + 17,000

subtract 17,000 from both sides

35,000 - 17,000 = 225x

18000 = 225x

divide both sides by 225

x = 18,000 / 225

x = 80

Therefore, the company can produce 80 commercials in year at a cost of $35,000

Read more:

https://brainly.com/question/3215028

ok pls help ty
Francine and Cheryl received equal scores on a test made up of multiple choice questions and an essay. Francine got 34 multiple choice questions correct and received 14 points for her essay. Cheryl got 30 multiple choice questions correct and received 22 points for her essay.

How many points was each multiple choice question worth?

Enter your answer in the box.

Answers

Answer:

Francine's score: 34x + 14

Cheryl's score: 30x + 22

Equal scores => 34x + 14 = 30x + 22

34x - 30x = 22 - 14

4x = 8

x = 8 /4 = 2.

Answer: 2  

Step-by-step explanation:

A cube has a side length of 12 inches. The cube is divided into 8 equal sized sections. What
is the volume of each section?

Answers

Answer:

216 cubic inches

Step-by-step explanation:

To find the volume of just the cube:

12 x 12 x 12 = 1728

then to find the volume of the section:

1728/8 = 216

Square root of 7921....

Answers

Answer:

89

Step-by-step explanation:

Evaluate the expression for x = -2, y = 3, and a = -4

5x-6y-3a ​

Answers

Hey there!

5x - 6y - 3a

= 5(-2) - 6(3) - 3(-4)

= -10 - 18 - 12

= -28 - (-12)

= -28 + 12

= -16

Therefore, your answer is: -16

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

algebric expression
divide the following

Answers

Answer:

3

Step-by-step explanation:

a)3ab/-4ab = -3/4
b)5y^2/x
c)5pq
d)-5xy^6
e)9p^6q^2 - 3q^3

Mrs.Roberts drives 3/4 miles in 1/2 minute. How many miles can she drive in 1 minute?

Answers

Answer:

1 1/2  OR 1.5 in decimal form

Step-by-step explanation:

If Mrs. Roberts drives 3/4 miles in half a minute, 1/2 x what = 1? 2. Multiply both items by 2. 3/4 x 2 = 6/4, also known as 1 1/2 or 1.5 Hope this helped!!

Use the figure below to answer the question

Solve for x

Answers

Answer:

Step-by-step explanation:

The sum of the interior angles, in degrees, of a regular polygon is given by the formula 180(n – 2), where n is the number of sides. The problem concerns a polygon with six sides, so we will let n = 6. The sum of the interior angles in this polygon would be 180(6 – 2) = 180(4) = 720. The angle on the bottom left is a right angle because of the square indicator. We know that this is 90 degrees. If we take the sum of the angles that we know we get 593. 720 - 593 = 127. x = 127.

Answer:

x=127

Step-by-step explanation:

take 180(n-2) where n=6, and you get 180(6-2) which simplified is 180(4) = 720. The sum of all the other angles is 593. subtract 593 from 720 (720-593=127). 127 is the angle of x.

all the steps laid out:

1. 180(n-2)

2. n=6

3. 180(6-2)

4. 180(4) = 720

5. 126 + 112 + 155 + 110 + 90 = 593

6. 720 - 593 = 127

7. x=127

Manny and John buy a pizza from Pizza Palace for $18. They decided to split
the cost based upon how much pizza they eat. John eats two-thirds of the
amount that Manny eats, so John pays two-thirds of the amount that manny pays how much does john pay?

Answers

Answer: 23.4

Step-by-step explanation:

Answer:

£6.00

Step-by-step explanation:

2/3 of £18

18 divide 3=6

6×2=18

answer=£12

£18-£12=£6

manny pays £6.00

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