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3 years ago

X: -3x + 14 = 4x -7

Mathematics

2 answers:

vaieri [72.5K]3 years ago

8 0

Answer:

x = 3

Step-by-step explanation:

You are solving for x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. PEMDAS is the order of operation, and equals:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

First, subtract 14 and 4x from both sides:

-3x (-4x) + 14 (-14) = 4x (-4x) - 7 (-14)

-3x - 4x = -7 - 14

-7x = -21

Next, divide -7 from both sides of the equation:

(-7x)/-7 = (-21)/-7

x = -21/-7

x = 3

x = 3 is your answer.

Luda [366]3 years ago

7 0

-3x+14=4x-7 = x=3

The answer is x=3

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1 year ago

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3 years ago

Let Ebe the set of all even positive integers in the universe Zof integers, and XE : Z R be the characteristic function of E.

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Answer:

$\mathbf{X_E (2) = 1}$

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Step-by-step explanation:

Let E be the set of all even positive integers in the universe Z of integers,

i.e

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$X_E : Z \to R$ be the characteristic function of E.

∴

$X_E(x) = \left \{ {{1 \ if \ x \ \ is \ an \ element \ of \ E} \atop {0 \ if \ x \ \ is \ not \ an \ element \ of \ E}} \right.$

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$\mathbf{X_E (2) = 1}$ since x is an element of E (i.e the set of all even numbers)

For XE(-2)

$\mathbf{X_E (-2) = 0 }$ since - 2 is less than 0 , and -2 is not an element of E

For { x ∈ Z: XE(x) = 1}

This can be read as:

x which is and element of Z such that X is also an element of x which is equal to 1.

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$\{ x \in Z: X_E(x) = 1\} = \{ x \in Z | x \in E\} \\ \\ \mathbf{\{ x \in Z: X_E(x) = 1\} = E}$

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5 0

3 years ago

100 points gor correct answer Identify the base of a triangle in which h=(3x+15) ft and A=(15x+75) ft^2.

ivolga24 [154]

Answer:

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Step-by-step explanation:

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= $\frac{30}{3}$

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7 0

3 years ago

Read 2 more answers