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Eduardwww [97]
3 years ago
10

6 + 3x = 12 x - 15 Which value for x makes this equation true: 7/3, 3/7, 5/7 , or 7/5

Mathematics
2 answers:
pentagon [3]3 years ago
7 0

Answer:

x = 7/3

Step-by-step explanation:

Step 1: Write equation

6 + 3x = 12x - 15

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

  1. Subtract 3x on both sides: 6 = 9x - 15
  2. Add 15 to both sides: 21 = 9x
  3. Divide both sides by 9: 21/9 = x
  4. Simplify: 7/3 = x
  5. Rewrite: x = 7/3

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

6 + 3(7/3) = 12(7/3) - 15

6 + 7 = 28 - 15

13 = 13

mafiozo [28]3 years ago
5 0

Answer:

  x = 7/3

Step-by-step explanation:

  6 +3x = 12x -15

  9x = 21 . . . . . add 15-3x

  x = 21/9 . . . . . divide by 9

  x = 7/3

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elena-s [515]

Answer:

Q ' (3,4)

Step-by-step explanation:

When we reflect across the x axis, the y coordinate becomes -y

Q (3,-4) becomes Q' (3,- -4)

                             Q ' (3,4)

7 0
3 years ago
Please help this has bean troubling me for the past 2 hours.<br><br>find NM​
Leviafan [203]

Answer:

NM = 15

Step-by-step explanation:

Given a secant and a tangent from an external point to the circle, then

The square of the measure of the tangent is equal to the product of the secant's external part and the entire secant, that is

(x + 3)² = (x - 3)(x - 3 + 16)

(x + 3)² = (x - 3)(x + 13) ← expand both sides using FOIL

x² + 6x + 9 = x² + 10x - 39 ( subtract x² + 10x from both sides )

- 4x + 9 = - 39 ( subtract 9 from both sides )

- 4x = - 48 ( divide both sides by - 4 )

x = 12

Then

NM = x + 3 = 12 + 3 = 15

7 0
3 years ago
You are 330 from home and you are driving home and you are driving toward home at an average of 55mph. Wr Try and equation to re
DochEvi [55]
Wouldn't that be 330 miles?  Units are important.

Let d represent your distance from home.  At the beginning you're 330 miles away, driving home at 55 mph (average).  If x represents the number of hours you've driven, then

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8 0
3 years ago
An inch is equal to about 2.54 centimeters. Write an expression who he estimates the number of centimeters in x inches. Then est
trasher [3.6K]

There are 30.48 centimeters in 12 inches.

Step-by-step explanation:

Given,

1 inch = 2.54 centimeters

For x inches;

x inches = 2.54*x centimeters

x inches = 2.54x centimeters

Number of centimeters in 12 inches

We will put x=12

12 inches = 2.54(12) centimeters

12 inches = 30.48 centimeters

There are 30.48 centimeters in 12 inches.

Keywords: multiplication

Learn more about multiplication at:

  • brainly.com/question/10744457
  • brainly.com/question/10754198

#LearnwithBrainly

5 0
4 years ago
Help please! :) 20 points!!
Lelechka [254]
Hi,

Answer: D

\sqrt{160}  = 40

Hope this helps.
r3t40
3 0
4 years ago
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