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kolezko [41]
4 years ago
14

How subtracting polynomials differs from adding polynomials and examples?

Mathematics
1 answer:
Llana [10]4 years ago
5 0
All you need to do is distribute the subtraction sign to all of the numbers in the polynomial being subtracted. Ex: (6x^4+8x^3-3)-(2x^2-9x+9)  you distribute the subtraction sign in the (2x^2-9x+9) and get -2x^2+9x-9. Next, all you have to do is combine like terms. 6x^4+8x^3-3-2x^2+9x-9 Turns into 6x^4+8x^3-2x^2+9x-12
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Question 6,7 I needed the answer
Sunny_sXe [5.5K]

Answer:

6.n/4

7.3/4time G or 0.75G

Step-by-step explanation:

6.3m+n/12-m-n/4=3m-3m+n+3n=4n/12=n/4

7.G=0.9a/1.2b G=3/4*a/b

7 0
3 years ago
Can someone help me pls ASAP.. it’s a math question
Verizon [17]

9514 1404 393

Answer:

  1. 64 weeks
  2. 4 months

Step-by-step explanation:

1. Let y represent gallons in the tank, and x represent number of weeks.

<u>tank 1</u>

  y = 256 -3x . . . . . starts with 256 gallons, loses 3 per week

<u>tank 2</u>

  y = 384 -5x . . . . . starts with 384 gallons, loses 5 per week

The amounts in the tanks will be equal when the y-values are equal.

  y = y

  256 -3x = 384 -5x

  2x = 128 . . . . add 5x-256

  x = 64 . . . . . . divide by 2

The amount of water in the two tanks will be equal after 64 weeks.

__

2. Let s and f represent the total cost of membership at Silver Gym and Fit Factor, respectively. Let x represent the number of months of membership.

  s = 25 +30x

  f = 65 +20x

The costs are the same when s=f.

  s = f

  25 +30x = 65 +20x

  10x = 40 . . . . . . subtract 25 +20x

  x = 4 . . . . . . . . . divide by 10

The two memberships will be the same price after 4 months.

3 0
3 years ago
9. Rusty can ride his bicycle 21 miles in 3 hours. Find the unit rate of the
pashok25 [27]

Rate = distance / time

Rate = 21 miles / 3 hours

Rate = 7 miles / hour

The answer is choice A. Hope this helps.

6 0
3 years ago
80% of n is 32 what is the value of n​
Korvikt [17]

Answer:

n=40

Step-by-step explanation:

divide 32 by 80

32/80=0.4

0.4x100=40

n=40

3 0
3 years ago
Help me get and explain how i do this
iogann1982 [59]

Answer:

1/78

Step-by-step explanation:

6 brown + 5 blue + 2 orange marbles = 13 marbles

P (orange1) = number of orange / total

                   = 2/ 13

Now we keep the marble

6 brown + 5 blue + 1 orange marbles = 12 marbles

P (orange2) = number of orange / total

                   = 1/ 12

P (orange, keep, orange) =P(orange1) + P( orange2)

                                              2/13*1/12 =  2/156 = 1/78

4 0
3 years ago
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