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aksik [14]
2 years ago
8

7x-9y-6x+2y simplify

Mathematics
2 answers:
Pavel [41]2 years ago
6 0

Answer:

x-7y

Step-by-step explanation:

7x-9y-6x+2y

Combine like terms

7x -6x    -9y +2y

x       -7y

x-7y

Papessa [141]2 years ago
3 0

Answer:

x -7y

Step-by-step explanation:

7x - 9y - 6x + 2y

Rearrange so like terms are together (these are terms that are similar such as 5b and 7b; 7 and 1)

7x - 6x - 9y + 2y

Group into brackets one-by-one and solve

(7x-6x) -9y + 2y

x -9y + 2y

x (-9y + 2y)

x -7y

Note that 1x, 1b, 1z etc are simply written as their variable eg x, b and z

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From a group of 8 women and 6 men, a committee consisting of 3 men and 3 women is to be formed. How many different committees ar
murzikaleks [220]

Answer:

(a) 896

(b) 1000

(c) 910

Step-by-step explanation:

Number of women = 8

Number of men = 6

A committee consisting of 3 men and 3 women is to be formed.

(a) 2 of the men refuse to serve together.

Number of men who don't want to serve together = 2

Remaining men = 4

Total ways = Both men who don't want to serve together are not selected + only one of them is selected.

^{8}C_{3}\cdot ^{4}C_{3}+^{8}C_{3}\cdot ^{4}C_{2}\cdot ^{2}C_{1}

896

(b) 2 of the women refuse to serve together.

Number of women who don't want to serve together = 2

Remaining men = 6

Total ways = Both women who don't want to serve together are not selected + only one of them is selected.

^{6}C_{3}\cdot ^{6}C_{3}+^{6}C_{3}\cdot ^{6}C_{2}\cdot ^{2}C_{1}

1000

(c)1 man and 1 woman refuse to serve together.

Ways = Total ways - Both man and woman are select who refuse the serve together

^{8}C_{3}\cdot ^{6}C_{3}-^{5}C_{2}\cdot ^{7}C_{2}

910

6 0
4 years ago
A group of friends on a camping trip has 325 lb of trail mix. They divide it up evenly among themselves. Each person gets 15 lb
Sever21 [200]
There are 21 friends on the camping trip. Or 21 2/3.

Hope this helped!
8 0
3 years ago
Read 2 more answers
B is the midpoint of AC. AB = 2x+12 and BC = 5x + 10. Find AC
3241004551 [841]

Answer:

x=6

Step-by-step explanation:

/AB/=2x+12

/BC/=5x+10

3x+2=5x-10 subtract 2 from both sides

3x=5x-12 subtract 5x from both sides

-2x=-12 divide both sides by -2x

x =6

5 0
2 years ago
Find the distance between c (4,7) and d (4,12)
Tanzania [10]
Easy
see, the x terms didn't move (x,y)

so
from 7 to 12
12-7=5
a distance of 5
8 0
3 years ago
What is this answer?​
vlada-n [284]

Answer:

the answer is h=9

Step-by-step explanation:

the answer is h=9

27/3=9

5 0
3 years ago
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