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iren [92.7K]
3 years ago
9

What is the answer to ... -5 - 3w = 7

Mathematics
1 answer:
Ierofanga [76]3 years ago
4 0

Answer:

w = -4

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

-5 - 3w = 7

<u>Step 2: Solve for </u><em><u>w</u></em>

  1. Add 5 to both sides:                    -3w = 12
  2. Divide -3 on both sides:              w = -4

<u>Step 3: Check</u>

<em>Plug in w to verify it's a solution.</em>

  1. Substitute:                    -5 - 3(-4) = 7
  2. Multiply:                        -5 + 12 = 7
  3. Add:                               7 = 7

And we have our final answer!

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Answer:

Polynomial comes from poly- (meaning "many") and -nomial (in this case meaning "term") ... so it says "many terms"

Also they can have one or more terms, but not an infinite number of terms.

These are polynomials:

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2/(x+2) is not, because dividing by a variable is not allowed

1/x is not either

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also 3x/8 for the same reason

√2 is allowed, because it is a constant (= 1.4142...etc)

Monomial, Binomial, Trinomial

There are special names for polynomials with 1, 2 or 3 terms:

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Variables

Polynomials can have no variable at all

Example: 21 is a polynomial. It has just one term, which is a constant.

Or one variable

Example: x4 − 2x2 + x   has three terms, but only one variable (x)

Or two or more variables

Example: xy4 − 5x2z   has two terms, and three variables (x, y and z)

What is Special About Polynomials?

Because of the strict definition, polynomials are easy to work with.

For example we know that:

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If you multiply polynomials you get a polynomial

So you can do lots of additions and multiplications, and still have a polynomial as the result.

Also, polynomials of one variable are easy to graph, as they have smooth and continuous lines.

Example: x4−2x2+x

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See how nice and

smooth the curve is?

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Example:

4x3-x-3 The Degree is 3 (the largest exponent of x)

For more complicated cases, read Degree (of an Expression).

Standard Form

The Standard Form for writing a polynomial is to put the terms with the highest degree first.

Example: Put this in Standard Form: 3x2 − 7 + 4x3 + x6

The highest degree is 6, so that goes first, then 3, 2 and then the constant last:

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You don't have to use Standard Form, but it helps.

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2 years ago
Can someone help me with this?
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3 years ago
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Answer:

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Answer:

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