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TEA [102]
3 years ago
8

How many solutions does the equation have ?

Mathematics
1 answer:
viktelen [127]3 years ago
4 0

Answer:

None

Step-by-step explanation:

Given

4(x - 2) + 4 = 2(2 + 2x) ← distribute parenthesis on both sides

4x - 8 + 4 = 4 + 4x, that is

4x - 4 = 4 + 4x ( subtract 4x from both sides )

0 - 4 = 4 ( add 4 to both sides )

0 = 4 ← not possible

Hence the equation has no solution

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Solve the system using the elimination method.
Sloan [31]

Answer:

x=151/64   y=9/8 z=-51/32

Step-by-step explanation:

2x+2y+5z- (2x-y+z)=-1-2

3y+4z=-3

2x+2y+5z- (2x+4y-3z)=-1-14

-2y+8z=-15

We have two equations 3y+4z=-3 and -2y+8z=-15 (We get it due to elimination method)

3y+4z=-3 (2)

-2y+8z=-15 (-3)

6y+8z=-6

6y-24z=45

(6y+8z)- (6y-24z)= -6-45

32z=-51

z=-51/32

3y-204/32=-3

3y= -96/32+204/32

3y=108/32

y=36/32=9/8

2x+2*9/8+5*(-51/32)=-1

2x+9/4-255/32=-1

2x+72/32-255/32=-1

2x-183/32=-32/32

2x=151/32

x=151/64

8 0
3 years ago
Help me please!!! Help will be appreciated
vitfil [10]
The answer is 22.5 because the total area is 45 if you count it, and it says each is 1/2.

1/2 * 45 = 22.5.

Hope this helped☺☺
5 0
3 years ago
Read 2 more answers
11) You invest $100,000 in an account with 6 % interest, compounded annually. Assume you don't touch the
Alina [70]

Answer:

after 10 years there will be $600000 in my account

6 0
3 years ago
Evaluate the following expression:<br> 5+7(3x+y) when x=12, y=8
timofeeve [1]
First step is 5+7(36x+8y) because you have to distribute
5 0
3 years ago
Read 2 more answers
Arlene is comparing the prices of two truck rental companies. Company A charges $7 per hour and an additional $30 as service cha
Valentin [98]

Answer:

Part A: 7n + 30= -5 and 8n + 40= 16

Part B: 7(8) + 30= 86 and 8(8) + 40= 104

Part C: Company A saves you 12.

Step-by-step explanation:

Company A: 7n + 30

Company B: 8n + 40

7n + 30= -5       8n + 40= 16

7(8) +30= 86     8(8) +40= 104

7(2) + 30= 44    8(2) + 40= 56

56 - 44= 12

7 0
3 years ago
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