3 years ago

Help!! this is due Friday and I forgot how to do math

Mathematics

2 answers:

Doss [256]3 years ago

6 0

Answer is A for you :)

Hatshy [7]3 years ago

5 0

I pretty sure it is A I looked it up.

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(3x^3-2x^2+4x-8)-(5x^3+12x^2-3x-4)

n200080 [17]

Answer: $-2x^3-14x^2+7x-4$

Step-by-step explanation:

$(3x^3-2x^2+4x-8)-(5x^3+12x^2-3x-4)$

Distribute the negative sign.

$(3x^3-2x^2+4x-8)-5x^3-12x^2+3x+4$

Remove the other parentheses.

$3x^3-2x^2+4x-8-5x^3-12x^2+3x+4$

Combine like terms.

$-2x^3-14x^2+7x-4$

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3 years ago

ABC Bookstore sells one customer 12 used books and 4 new books for $136.

Natalka [10]

Answer:

n=6 u=28/3

Step-by-step explanation:

system of equations

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3 years ago

Jared made a 15 minute phone call yesterday that cost $0.90. how long will jared be on the phone today if the call cost $1.32, a

Blababa [14]

1. figure out cost per min

.90/15 =.06/min

2. figure out mins. since we know cost per min we can divide that by jared’s total cost for that call

1.32/.06= x mins ——->22 mins

7 0

2 years ago

X - y = -2<br> 7x + 2y = -5<br> Solve using substitution method

bixtya [17]

Step-by-step explanation:

x=-2+y

7(-2+y)+2y=-5

-14+7y+2y=-5

9y=9

y=1

x=-2+1

x=-1

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3 years ago

What is the greatest common factor of 14, 51 ,21

nikitadnepr [17]

Answer:

The answer is 1

Step-by-step explanation:

14 = 2 × 7

51 = 3 × 17

21 = 3 × 7

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3 years ago

Help!! this is due Friday and I forgot how to do math​

Help!! this is due Friday and I forgot how to do math