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Zinaida [17]
3 years ago
12

3(x + 4) = 18 (Given)

Mathematics
2 answers:
strojnjashka [21]3 years ago
6 0
The answer is division because u divide 3 from both side of the equation so that make the answer B
lorasvet [3.4K]3 years ago
3 0

Answer: The correct answer is B) division.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

3(x + 4) = 18 (Given)  

3x + 12 = 18 (Distributive Property)  

3x = 6 (Subtraction)  

x = 2

To obtain the result, in the last step we have to divide both sides by 3.

Mathematically speaking:

3x÷3 = 6÷3

x =2

So, the correct answer is B) division.

Feel free to ask for more if it´s necessary or if you did not understand something.

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What is 10/15 = N/96
Snezhnost [94]

Answer:

n = 64

Step-by-step explanation:

We can solve using cross products

10/15 = n/96

10*96 = 15*n

960 = 15n

Divide each side by 15

960/15 =15n/15

64 = n

6 0
3 years ago
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On three examinations, you have grades of 85, 78, and 84. There is still a final examination, which counts as one grade In order
Greeley [361]

Answer:

  • It's not possible to earn an A in the course
  • I must have a 73 or MORE to earn a B in the course

Step-by-step explanation:

The average obtained at the end of the course will be:

\frac{85+78+84+x}{4} = av

Where x is the grade obtained in the final examination and av is the final average. To obtain an A, av has to be at least 90, av≥90, and to obtain an B, av has to be at least 80, av≥80

  • Is an A in the course possible?

So, if we get 100 on the final average:

x = 100,

av = (85+78+84+100)/4 = 86,75 and  86,75∠90.

<em>Answer: No, the higher grade obtained would be 86,75.</em>

  • What grade you must have in the final to earn a B in the course

To earn a B, av≥80:

av= \frac{85+78+84+x}{4 \ }\geq  80\\ \frac{247+x}{4}\geq80   \\247+x\geq 80*4\\ x\geq 320-247\\ x\geq 73

<em>Answer: I must have a 73 or MORE to earn a B in the course</em>

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3 years ago
What's the answer to this??
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The variable "x" equals 7
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Find the diameter, given the circumference of a circle is 40.035 cm.
LekaFEV [45]

Answer:

12.75

Step-by-step explanation:

c = π x d

40.035= 3.14 x d

40.035/3.14 = 12.75

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Answer:

{-5, -4, -2, -1, 2, 3}

Step-by-step explanation:

Domain is x value and then you have to put in order :)

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