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Norma-Jean [14]
4 years ago
11

What is the difference of the two polynomials?

Mathematics
2 answers:
guapka [62]4 years ago
7 0

Simplify

9x^2 + 8x - (2x^2 + 3x)

Simplify brackets

9x^2 + 8x - 2x^2 - 3x

Collect like terms

(9x^2 - 2x^2) + (8x - 3x)

Simplify

<u>7x^2 + 5x</u>

<u>Answer: A. 7x2 + 5x</u>

Ganezh [65]4 years ago
5 0

Answer:

a) 7x^2 + 5x

Step-by-step explanation:

(9x^2 + 8x) – (2x^2 + 3x)

Distribute the minus sign

(9x^2 + 8x) – 2x^2 - 3x

Line them up vertically

  (9x^2 + 8x)

– 2x^2 - 3x

-------------------

7x^2     +5x

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Adrian is a songwriter who collects royalties on his songs whenever they are played in a commercial or movie. Adrian will earn $
gayaneshka [121]

Answer:

Adrian's songs played on 9 commercials and 5 movies.

Step-by-step explanation:

Let x denotes number of commercials and y denotes number of movies.

Total number of commercials and movies = 14

So,

x+y=14\\x=14-y\,\,\,\,...(i)

Adrian will earn $40 every time one of his songs is played in a commercial and he will earn $130 every time one of his songs is played in a movie

Total amount earned = $1010

40x+130y=1010\,\,\,...(ii)

Put x=14-y in (ii)

40(14-y)+130y=1010\\560-40y+130y=1010\\90y=1010-560\\90y=450\\y=\frac{450}{90}=5

Put y=5 in x=14-y

x=14-5=9

Therefore, Adrian's songs played on 9 commercials and 5 movies.

7 0
3 years ago
There’s a box of cereal
WARRIOR [948]

Answer:

is that a math????????

5 0
3 years ago
Read 2 more answers
In the lock (shown on picture), there are ten numbers to choose from the set of (0, 1, ..., 9) and we choose 4 of them. b How ma
nadya68 [22]

Answer:

6

Step-by-step explanation:

since their are 3 numbers to choose from we do 3! or 3*2*1 which is 6.

3 0
3 years ago
10.25
Mrac [35]
C. 2g-19.5=40 I think i'm right
3 0
3 years ago
Read 2 more answers
Factor the polynomial by grouping : x^3+5x^2-6x-30
andrew-mc [135]

The idea is to pair up the terms, factor each sub-group, and then pull out the overall GCF to fully factor.

x^3+5x^2-6x-30

(x^3+5x^2)+(-6x-30)

x^2(x+5)+(-6x-30)

x^2(x+5)-6(x+5)

(x^2-6)(x+5)

-------------

Answer: (x^2-6)(x+5)

4 0
3 years ago
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