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Anika [276]
3 years ago
13

Jamar's teacher told him that one of the reasons he gave on the proof below was incorrect. Which reason did he make the mistake

on? Tell me the number of the reason he got wrong and which property he should have used instead (use your blue foldable, if needed).
Statements

1. 2(3x + 4) = 56
Reasons

1. Given

2. 6x + 8 = 56
2. Multiplication Property of Equality
3. 6x + 8 - 8 = 56 - 8
3. Subtraction Property of Equality
4. 6x = 48 4. Simplify

5. 6x6=486 5. Division Property of Equality
6. x = 8
6. Simplify
Mathematics
1 answer:
Kamila [148]3 years ago
8 0

Answer:

Reason given in step 2. is incorrect. It should read; "Distributive Property."

Step-by-step explanation:

The reason given to go from :

2 (3x +4) = 56  to 6x + 8 = 56

is NOT "Multiplication Property of Equality" because one is not multiplying both sides of the equality by a number. The property that is being used is the Distributive Property on the left side of the equation in order to remove the grouping symbols (parenthesis) performing the implied multiplication of the external factor times each term of the binomial in parenthesis.

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Answer:

Hypotheses are always made by one individual or by a limited group of scientists, and are therefore subjective—based on the prior experience and processes of reason employed by those individuals, rather than solely on objective external process. 

According to this view, human attitude is associated with human sciences; but as far as natural science is concerned there is no scope for any subjective elements. Scientific knowledge is purely objective, and it is an objective description of the real structure of the world.

Step-by-step explanation:

Pertaining to or characteristic of an individual; personal; individual: a subjective evaluation.

Phrase collocation :

  1. subjective idealism
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Bilingual example Used as an adjective (adj.) :

  1. Whatever is subjective in you, is the truth.
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4 0
3 years ago
The ratio of pencils to erasers is 4:1. if there are 20 pencils, how many erasers are there?
serious [3.7K]
5 Erasers, 4:1 is equal to 20:5, if you just multiply both numbers by 5
7 0
3 years ago
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Solve the right triangle. Round decimals answers to the nearest tenth.
9966 [12]

Answer:

3^2 + x^2 = 9^2

9 + x^2 = 81

x^2 = 72

x = \sqrt{72\\}, which is about 8.5

Cosine X = 3/9

Cosine X = 1/3

angle x= 70.5

If angle x= 70.5, angle z = 19.5 degrees.

Let me know if this helps!

5 0
2 years ago
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May I have some help please?
MakcuM [25]

Answer:

If this is solving for a hypotenuse, the answer is 8.

Step-by-step explanation:

a^2 + b^2 = c^2

6^2 b^2 = 10^2

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The square root of 64 is 8.

6 0
2 years ago
Y is inversley proportionaly to x. when y=7, x=9
mrs_skeptik [129]

The equation is y = 63/x

And y = 3 when x=21

Step-by-step explanation:

When y varies inversely with x, The inverse proportion is given by:

y ∝1/x

When the proportionality symbol is removed, a constant of proportionality is introduced

y = \frac{k}{x}

Putting y = 7 and x = 9

7 = \frac{k}{9}\\k = 9*7\\k = 63

So,

y = \frac{63}{x}

Putting x =21

y = \frac{63}{21}\\y = 3

Hence,

The equation is y = 63/x

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Keywords: Proportion, variables

Learn more about proportion at:

  • brainly.com/question/11220787
  • brainly.com/question/11131690

#LearnwithBrainly

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