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Alex17521 [72]
3 years ago
7

2a - 4b +3ab -5a +2b

Mathematics
2 answers:
DaniilM [7]3 years ago
6 0

Answer:

-3a-2b+3ab

Step-by-step explanation:

2a-5a

-4b+2b

Vesnalui [34]3 years ago
6 0

Answer:

3a+2b-3ab=0

Step-by-step explanation:

2a - 5a -4b+2b+3ab

-3a-2b +3ab

taking - common

-(3a+2b-3ab)=0

3a+2b-3ab=0

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In a word processing document or on a separate piece of paper, use the guide to construct a two-column proof proving AC > EF
VARVARA [1.3K]

<em>Answer:</em>

Complete proof is written below.

Facts and explanation about the segments shown in question :

  1. As BC = EF is a given statement in the question
  2. AB + BC = AC because the definition of betweenness gives us a clear idea that if a point B is between points A and C, then the length of AB and the length of BC is equal to the length of AC. Also according to Segment addition postulate, AB + BC = AC. For example, if AB = 5 and BC= 7 then AC = AB + BC → AC = 12
  3. AC > BC because the Parts Theorem (Segments) mentions that if B is a point on AC between A and C, then AC > BC and AC>AB. So, if we observe the question figure, we can realize that point B lies on the segment AC between points A and C.
  4. AC > EF because BC is equal to EF and if AC>BC, then it must be true that the length of AC must greater than the length segment EF.

Below is the complete proof of the observation given in the question:

<em />

<em>STATEMENT                              REASON  </em>

___________________________________________________

1. BC = EF                                    1. Given

2. AB + BC = AC                         2. Betweenness

3. AC > BC                                   3. Def. of segment inequality

4. AC > EF                                   4. Def. of congruent segments

<em />

<em>Keywords: statement, length, reason, proof</em>

<em> Learn more about proof from brainly.com/question/13005321</em>

<em> #learnwithBrainly</em>

4 0
3 years ago
10 cookies 4 chocolate chip 3 are peanut butter 3 are sugar what fraction of the cookies are chocolate chip
Lilit [14]
4/10 cookies so that is 2/5 or 40% :)
7 0
3 years ago
Question 9: A printing company's costs for printing a book are $300 for
NemiM [27]

Answer:

The answer is B

Step-by-step explanation:

6 0
2 years ago
Sam rolls a fair dice and flips a fair coin.
wolverine [178]

Answer:

The probability that this occurs is 25%, as 3/6 (chance to roll an odd number) multiplied by 1/2 (chance to flip a head) is .25.

Step-by-step explanation:

8 0
2 years ago
How do you work it out ???
Natalka [10]
Answer = 70 girls

Firstly, turn 56% into a decimal

56 / 100 = 0.56

Afterwards, multiply that by the number of girls

0.56 x 126 = 70.56

It would be 70 girls bc you can’t have 70 and a half girls.
6 0
3 years ago
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