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Liono4ka [1.6K]
3 years ago
7

The coefficient of x in the expansion of the following is (x+3)^3 a) 1 b) 3 c) 18 d) 27 e) 9

Mathematics
1 answer:
VashaNatasha [74]3 years ago
3 0

Answer:

  d) 27

Step-by-step explanation:

The expanded form of (a+b)³ is ...

  (a +b)³ = a³ +3a²b +3ab² +b³

When we are expanding (x +3)³, the x-term is ...

  3(x)(3²) = 27x

The coefficient of x in the expansion is 27.

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In the equation 4+c=18, the value of c will be less than 18 true or false?
Dominik [7]

Answer:

true

Step-by-step explanation:

because when we subtract 18 and 4, the answer is 12. Hence, the value is less than 18

5 0
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which graph represents a hyperbola centered at the origin, with a transverse axis of length 6 and a focus at (square root 14,0)
dem82 [27]

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3 0
3 years ago
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Elaine opens a checking account with a deposit of $20.00 and wants to put the same amount of money
Snowcat [4.5K]

Answer: 200 = m x 10 + 20

Step-by-step explanation:

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7 0
3 years ago
(5x^2-4X + 7) - (4x + 2)
DanielleElmas [232]
5x’2-4x+7-4x-2
We add the two 4
5x’2-8x+7-2
5x’2-8x+5
The answer is
5x’2 -8x +5
3 0
3 years ago
Plz help me with these math questions
Akimi4 [234]
For b on the first paper you will start with the distribution property and multiply both x and 2 by 3 because they are in the ()
now you have 3x+ 6=x-18
from here you can subtract x from both sides
2x+6=-18
next subtract 6 from both sides
2x=-24
divide both sides by 2...
x=-12
hope this helped
8 0
3 years ago
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