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anyanavicka [17]
3 years ago
7

(12x - 30) = (2x - 5)​

Mathematics
1 answer:
zzz [600]3 years ago
8 0

Answer:

x = 5/2

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

<u>Algebra I</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

12x - 30 = 2x - 5

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

  1. Subtract 2x on both sides:                    10x - 30 = -5
  2. Add 30 to both sides:                            10x = 25
  3. Divide 10 on both sides:                        x = 5/2
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An artists builds a sculpture out of metal and wood that weighs 14.9 kilograms.3/4 of this weight is metal,and the rest is wood.
Softa [21]

Given is a sculpture that is built up of metal and wood, and the weight of this sculpture is 14.9 kilograms.

It says that three-fourth of the total weight is metal and says to find the weight of wooden part.

We can find the weight of metal part and then subtract it from the total weight to calculate the answer.

Total weight = 14.9 kilograms.

Metal part = three-fourth of total weight = \frac{3}{4} *14.9=\frac{44.7}{4} =11.175 \;kilograms

Wooden part = 14.9 - 11.175 = 3.725 kilograms.

Hence, the wooden part is 3.725 kilograms.

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3 years ago
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Inferential statistical tests are used for all of the following except: a. describing a sample with means and standard deviation
Anika [276]

Answer:

a. Describing a sample with mean and standard deviation.

Step-by-step explanation:

Statistics can be categorized into descriptive and inferential statistics.

descriptive statistics uses data for descriptions through numerical analysis. It can be further divided in four parts.

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Jamar is finding the selling price of a pair of 40 skates with a 30% markup. Find his mistake and correct it
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22. Marlenny travels 42 blocks to school, which is three times as far as Alya does. If Alya moves
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How many blocks away from school does she live now is 9 blocks away from school.

First step is to calculate the number of blocks between the house she was living before and  the school

Blocks=42 blocks/3

Blocks=14 blocks

Second step is to  calculate how many blocks away from school does she live now

Number of blocks=14 blocks- 5 blocks

Number of blocks=9 blocks

Inconclusion How many blocks away from school does she live now is 9 blocks away from school

Learn more here:

brainly.com/question/11747609

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