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Artemon [7]
2 years ago
7

Solve x 3+3(x+2)=-24​

Mathematics
2 answers:
gregori [183]2 years ago
8 0

Answer:

x=-11

Step-by-step explanation:

3+3x=6=-24

3x+9=-24

3x=-33

x=-11

Zigmanuir [339]2 years ago
4 0

Answer:

x = -11

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

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

3 + 3(x + 2) = -24

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

  1. Distribute 3:                    3 + 3x + 6 = -24
  2. Combine like terms:       3x + 9 = -24
  3. Isolate <em>x</em> term:                 3x = -33
  4. Isolate <em>x</em>:                          x = -11

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    3 + 3(-11 + 2) = -24
  2. Add:                                     3 + 3(-9) = -24
  3. Multiply:                               3 - 27 = -24
  4. Subtract:                              -24 = -24

Here we see that -24 does indeed equal -24.

∴ x = -11 is the solution to the equation.

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Step-by-step explanation:

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3 years ago
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Nana76 [90]

Answer:

The area of the trapezium is 74.8\ cm^2

Step-by-step explanation:

Area of a trapezium:

\displaystyle A=\frac{b1+b2}{2}h

This formula is valid if b1 and b2 are parallel and h is perpendicular to both.

Since the trapezium given in the problem satisfies those conditions, we use the formula with:

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6 0
3 years ago
Paint can be purchased in two sizes: 1 gallon for $45.99 or 1 quart for $14.99.(round to the hundredths place)a.unit ratio of 1
ExtremeBDS [4]

Answer:

  a. $0.47 per ounce

  b. $0.36 per ounce

  c. the gallon size costs less per ounce

Step-by-step explanation:

A unit rate is a rate that is expressed with one unit in the denominator. That is, it is <some amount> per unit. The <some amount> value will generally depend on what unit is chosen. This problem suggests the desired unit is 1 oz of paint.

__

<h3>a.</h3>

Unit cost for a quart:

  ratio = cost/ounces = $14.99/(32 oz) ≈ $0.468/oz ≈ $0.47/oz

__

<h3>b.</h3>

Unit cost for a gallon:

  ratio = cost/ounces = $45.99/(120 oz) ≈ $0.359/oz ≈ $0.36/oz

__

<h3>c.</h3>

The cost per ounce is less for the gallon size. If at least 3 quarts of paint is needed, then buying it in the gallon size will cost less.

If less than 3 quarts are needed, then a gallon container will cost more than is necessary for the paint required. The "better deal" depends on the amount of paint required.

3 0
2 years ago
Solve for r.<br><br> 3r − 2r =
alexandr402 [8]
The answer if i’m not wrong would be r 3-2 equals 1 which is r.
3 0
3 years ago
Help me with my homework pls :)
vesna_86 [32]

Answer:

That smile tho lol

anywayssssss

b= 16 mm

Step-by-step explanation:

Pythagorean theorem is a^2 + b^2= c^2, so-

12^2 +b^2= 20^2

144+b^2=400

b^2=400-144

b^2= 256

b= 16

8 0
3 years ago
Read 2 more answers
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