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Black_prince [1.1K]
3 years ago
15

Please help

Mathematics
1 answer:
Alinara [238K]3 years ago
7 0

Answer: A. 2x(x²)+2x(5x)+2x(-2xy)+2x(-10y)

B. 2x(x²+5x-2xy-10y)

Step-by-step explanation:

note: x*x means x times x

remember distributive and reverse it

ab+ac=a(b+c)

a is gcf

factor each

2x³=2*x*x*x

10x²=2*5*x*x

4x²y=2*2*x*x*y

20xy=2*2*5*x*y

gcf=2*x or 2x

2x³+10x²-4x²y-20xy=

2x(x²)+2x(5x)+2x(-2xy)+2x(-10y)=

2x(x²+5x-2xy-10y)

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Answer:

Step-by-step explanation:

-6.25x > -38 3/4

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Multiply by (-4)

25x > 155

divide by 25,

x > 155/25

x > 31/5

x > 6.2

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Sarah thinks there will be 60 people at the party. show that the cost will be $1350
svetoff [14.1K]
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3 0
3 years ago
Your friend Mel says he has an easier way to solve this problem. Here are the first steps in his method.
damaskus [11]

Simplifying

2x2 + 6x + 4 = 24

Reorder the terms:

4 + 6x + 2x2 = 24

Solving

4 + 6x + 2x2 = 24

Solving for variable 'x'.

Reorder the terms:

4 + -24 + 6x + 2x2 = 24 + -24

Combine like terms: 4 + -24 = -20

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Combine like terms: 24 + -24 = 0

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Factor out the Greatest Common Factor (GCF), '2'.

2(-10 + 3x + x2) = 0

Factor a trinomial.

2((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve:

Simplifying

-5 + -1x = 0

Solving

-5 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.

-5 + 5 + -1x = 0 + 5

Combine like terms: -5 + 5 = 0

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Combine like terms: 0 + 5 = 5

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Divide each side by '-1'.

x = -5

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x = -5

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3 years ago
Lonna had 30 minutes to do a three-problem quiz. She spent 11 minutes on question A and 4
STatiana [176]

Answer:

She had 15 minutes left.

Step-by-step explanation:

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8 0
2 years ago
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