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4 years ago

Use the distributive property to find an expression that is equivalent to 2x(x + 7)-(3x +1)

Mathematics

2 answers:

Dahasolnce [82]4 years ago

8 0

The answer is
2x^2+11x-7
.
.
.

11111nata11111 [884]4 years ago

3 0

Answer:

2x^2 + 11x - 1

Step-by-step explanation:

2x (x + 7) - (3x + 1) = 2x * 7 - 1 * 3x - 1 * 1

= 2x^2 + 14x - 3x - 1

= 2x^2 + 11x - 1

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4 years ago

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3 years ago

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andreev551 [17]

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4 years ago

Footware manufacturing is projected to decrease output by 8.4% from 2006 to 2016. If footware manufacturing had 1.8 billion doll

kramer

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4 0

4 years ago

etermine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 3 2 x

nata0808 [166]

Answer:

(32/15, -2/5)

Step-by-step explanation:

(1) ³/₂x - 2y = 4

(2) x + ⅓y = 2

(3) 3x - 4y = 8 Multiplied (1) by 2

(4) 3x + y = 6 Multiplied (2) by 3

5y = -2 Subtracted (3) from (4)

(5) y = -⅖ Divided each side by 5

x + ⅓(-⅖) = 2 Substituted (5) into (2)

x - ²/₁₅ = 2

x = 2 + ²/₁₅ Added ²/₁₅ to each side

x = 32/15

The system of equations has only one solution: (32/15, -2/5).

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3 years ago