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zvonat [6]
3 years ago
12

Factorise (x+y)^2-(4-x)^2​

Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0

Answer:

by using the identity a square - b square = (a+b)*(a-b)

a = x+y

b=4-x

= (x+y + 4-x)(x+y - 4-x)

y+4 * x+y -4+x

y+4*2x+y-4

2xy+y square -4y + yx + 4x + 4y - 16 +4x

3xy +y square + 8x -16

Step-by-step explanation:

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Please help with this problem
fenix001 [56]

Answer:

y⁷/x⁵ , I hope this helps

4 0
3 years ago
Kaylee and Olivia go to the movie theater and purchase refreshments for their friends.
KatRina [158]

The price of one bag of popcorn is $3.75

Step-by-step explanation:

Let,

x represent the cost of a bag of popcorn

y represent the cost of a drink.

According to given statement;

4x+12y=30      Eqn 1

x+6y=11.25      Eqn 2

Multplying Eqn 2 by 2

2(x+6y=11.25)\\2x+12y=22.50\ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 1

(4x+12y)-(2x+12y)=30-22.50\\4x+12y-2x-12y=7.50\\2x=7.50

Dividing both sides by 2

\frac{2x}{2}=\frac{7.50}{2}\\x=3.75

4x+12y=30 and x+6y=11.25 can be used to find the price of one bag of popcorn and the price of one drink.

The price of one bag of popcorn is $3.75

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/11821063
  • brainly.com/question/11871074

#LearnwithBrainly

3 0
3 years ago
A company has six employees.The salary of five of the employees are P2200,P1300,P800,P940 and P560.When the sixth employee is in
Dafna1 [17]

Answer:

First answer is 1200

Second answer is 900 for each new employee

Step-by-step explanation:

First answer:

2200+1300+800+940+560+x = 7000

5800+x = 7000 subtract 5800 from both sides and you get your answer

x = 1200

Second answer:

x = 900.  Each of the two employees made 900 a month or 1800 a month for both of them.

To find the average we take the total salaries and divide by the number of people to find the average salary.  In this case, we know the average and we know all of the salaries, but two.  We can figure this out.

(7000 + 2x)/8 = 1100  multiple both sides by 8 to clear the fraction/

7000 +2x = 8800  Subtract both sides by 7000

2x = 1800  Divide both sides by 2

x = 900

3 0
2 years ago
Im going to start giving hard questions now and who ever has the most professional answer or the correct answer gets brainliest.
PilotLPTM [1.2K]

Answer:

1. she has 30 ounces left

2. 4 left

3.8

Step-by-step explanation:

sorry cant do the rest :)

7 0
2 years ago
What is the GCF of 54 and 32?
Musya8 [376]
3
32: 2 2 2 2 2
GCF: 2
8 0
3 years ago
Read 2 more answers
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