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const2013 [10]
3 years ago
10

6ab + a(a – b – 6b) + 4a(2b +a) – ab , para a= -1 e b=2 ME AJUDEM! É URGENTE

Mathematics
1 answer:
Marianna [84]3 years ago
6 0

Answer:

-81

Step-by-step explanation:

replace the numbers you were given in a or b.

so

6(-12) -1(-1 – 2 – 6(2)) + 4(-1)(2(2) -1) -12

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densk [106]

Answer:

Point form (2.1)

Equation form: x=2,y=1

5 0
3 years ago
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What is the result of adding these two equations?
andre [41]

Answer:

x=103/265        y=18/53

Step-by-step explanation:

5x -9y=1-----------(i)

-7x+2y=-5-----------(ii)

Multiplying eq 1 with 7 gives

35x-63y=7---------eq(iii)

Multiplying eq 2 with 5 gives

-35x+10y=-25--------eq(iv)

adding eq 3 qnd eq 4

35x-63y-35x+10y=7-25

-53y=-18

y=18/53--------eq5

Putting the value of y from eq 5 in eq 1

5x-9(18/53)=-5

5x- 162/53=-5

5x=-5 +162/53

5x= -265+162/53

5x=103/53

x=103/265

7 0
3 years ago
A=1/2bh for h<br><br> Need help
Zarrin [17]

Answer:

2A/b = h

Step-by-step explanation:

A=1/2bh

Multiply each side by 2

2A = 2 * 1/2 bh

2A = bh

Divide each side by b

2A/b = bh/b

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6 0
3 years ago
Evaluate the expression.<br><br> ║4/13║
NNADVOKAT [17]

Answer:

4/13

Step-by-step explanation:

In absolute value, it is showing distance. Whenever something is in absolute value, it is turned positive.

here, Inside the absolute value brackets, we have positive 4/13. Positive 4/13 undergoes no such change, because there are no other terms, and no negatives.

absolute value of 4/13 is 4/13

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Genrish500 [490]
<span>14.3 years 

Hope that helps! (:</span>
7 0
3 years ago
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