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Solnce55 [7]
3 years ago
5

-6x - y = 26 12x - 8y = 28

Mathematics
1 answer:
ELEN [110]3 years ago
4 0

Answer:

Look at the pic

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask

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What is the solution set of (x^2+x-6/x-7)<_0
Vlada [557]
X^2 + x - 6 
-------------   <=  0
  x - 7 

(x + 3)(x - 2)
---------------- <= 0
    x - 7

2 critical values are  x = -3 and x = 2

if x <= -3  the  the function <= 0  so that's one part of the solution
also x >= 2
x must be < 7  if its = 7 then the function is indeterminate.  and values between 2 and 7 will give negative valu to function

The answer is  choice A.


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Step-by-step explanation:

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3 years ago
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Anon25 [30]

Answer:

A

Step-by-step explanation:

Think about the square root of 64, which is 8. It will only be slightly higher than 8, which will not even be .5, so 8 is the closest number.

4 0
3 years ago
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What is the value of x in the equation below? 4(x + 3) = 9x + 16 + 3x
creativ13 [48]

Answer:

x = -1/2

Step-by-step explanation:

4(x + 3) = 9x + 16 + 3x

Distribute the 4

4x +12 = 9x+16+3x

Combine like terms

4x+12 = 12x+16

Subtract 4x

4x-4x+12 = 12x-4x+16

12 = 8x+16

Subtract 16

12-16 = 8x+16-16

-4 =8x

Divide by 8

-4/8 =8x/8

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3 0
3 years ago
What is the value of z in the equation 2(4z − 3 − 21) = 166 − 46? 21 24 30 36
Nataly_w [17]
2(4z-3-21)=166-46

Combine like terms
2(4z-24)= 120

Distribute
8z-48= 120

Add 48 to both sides
8z= 168

Divide both sides by 8
z=21

Final answer: z=21
5 0
3 years ago
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