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liraira [26]
3 years ago
11

Which expressions are equivalint to 3x +2(x - 1) -4

Mathematics
2 answers:
zepelin [54]3 years ago
5 0

Answer:

B. 5x - 6

Step-by-step explanation:

You just need to expand the expression, 3x + 2(x - 1) - 4

1) expand the brackets first (laws of arithmetic), 3x + 2x - 2 - 4

2) Simplify and you will get 5x - 6 which is option B

Lerok [7]3 years ago
4 0

Answer:

A.  3x +2(x - 1) -4 and B. 5x-6

Step-by-step explanation:

One of the answers is letter A because its the same exact expression as stated in the question. The other answer is B because of the distribution property you multiple x by 2 and multiply -1 by 2. This now gives us the expression 3x+2x-2-4. Now we add/subtract like terms and that gives the the answer 5x-6. I hope this helps.

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20 points if you help me on this proublem
VMariaS [17]

Answer:

1) f(x) = x/8 - 7

2) f(x) = 1 - x/3

3) f(x) = 20 - 0.25x

4) f(x) = x + 7

Step-by-step explanation:

f^-1 = 8(x + 7)

x + 7 = y/8

x = y/8 - 7

f(x) = x/8 - 7

f^-1 = -3(x - 1)

y/-3 = x - 1

x = 1 - y/3

f(x) = 1 - x/3

f^-1 = 4(20 - x)

y/4 = 20 - x

x = 20 - y/4

f(x) = 20 - x/4

f(x) = 20 - 0.25x

f^-1 = x - 7

y = x - 7

x = y + 7

f(x) = x + 7

3 0
3 years ago
I can't figure this one out.
mezya [45]

Answer:

I'm pretty sure the answer is B. x+6

Step-by-step explanation:

a polynomial with two terms (x and 6) is called a binomial. bi means two, so your answer would have two terms! hope this helped :)

5 0
3 years ago
I know that it falls to the left and rises to the right but how do I express that here?
Jlenok [28]

Answer:

c

Step-by-step explanation:

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Y = 4x
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