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kari74 [83]
4 years ago
5

What value of x makes this statement true?3x + 4 = 9x -8​A. -2B. 1C. 2D. 12

Mathematics
1 answer:
tia_tia [17]4 years ago
6 0

Answer:

C. 2

Step-by-step explanation:

3x + 4 = 9x - 8​  (subtract 4 from both sides)

3x = 9x - 8​ - 4

3x = 9x - 12   (subtract 9x from both sides)

3x - 9x = -12

-6x = -12   (divide both sides by -6)

x = -12 / (-6)

x = 2

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HELPP PLEASEEE
MrRa [10]

Answer: The answer to your question is 6\sqrt{3}

Step-by-step explanation:

To solve this problem we will use proportions. We will compare the largest right triangle and the medium size triangle.

                          Medium triangle                     Large triangle

hypotenuse                 y                                            9 + 3

adjacent size               9                                               y

- Write the proportions

                                  y/9 = (9 + 3)/y

-Solve for y

                                  y² = 9(12)

                                  y² = 108

                                  y =   \sqrt{180}

-Find the prime factors of 108

                                  108  2

54 2

                                     27 3

                                      9  3

                                      3   3

                                       1

then,       108 = 2² 3³

-Expressthe root as fractional exponents

                                  2²/² 3²/² 3¹/²

-Simplification

                                   2(3)(3)¹/²

-Result

                                      6\sqrt{3}

8 0
3 years ago
Another one omg this is annoying
Alexeev081 [22]

Answer:

Correct option: first one

Step-by-step explanation:

The equation f(x) = 5x + 1 is a function, because each value of x gives only one  value of y.

Now let's find the inverse by switching f(x) by x and x by f'(x), then isolating f'(x):

x = 5f'(x) + 1

5f'(x) = x - 1

f'(x) = \frac{x - 1}{5}

The inverse f'(x) is also a function, because each value of x gives only one value of x.

So we have that both the equation and its inverse are function, therefore the correct answer is the first option.

7 0
4 years ago
The pages of a book are numbered 1 to 200 and each leaf is 0.15 mm thick. If each cover is 2.5 mm thick, calculate the thickness
Serga [27]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Thickness of the book is ~

  • 20 \:  mm = 2 \: cm = 0.02m

Refer to the attachment for solution ~

7 0
2 years ago
Please Helpppppppppp!!!!!!!!!!!!!!!
viktelen [127]

Answer:

122/3435.35/67

Step-by-step explanation:

7 0
3 years ago
1 + (2)(3)(4) pls help me​
mixer [17]

Answer:

25

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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