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Brut [27]
3 years ago
11

8^x = (1/2)^(x-1) Solve for x

Mathematics
1 answer:
guajiro [1.7K]3 years ago
8 0
I will help you with this one before giving you a helpful tool
1/4

The tool is this website: Mathway; Plug in a question and choose what you want the website to do and boom, gives you answers and if you sign up it will show you steps if you have a teacher who wants work shown
You might be interested in
3x + 1 = 5X-13 if anyone knows what to do can they please help ​
Elza [17]

Answer:

  x = 7

Step-by-step explanation:

First, you look at the equation. Identify the locations of variable terms (both sides of the equal sign) and the constant terms (both sides of the equal sign).

If there are any parentheses, it is a good idea to use the distributive property to eliminate them. Here, there are none.

I like to start by subtracting <em>the variable term with the smallest coefficient</em>. Here, that is 3x, so we add -3x to both sides of the equation.

  3x -3x +1 = 5x -3x -13

  1 = 2x -13 . . . . . . . . . . . . combine like terms

Now, we have the only variable term on one side of the equal sign. We want it by itself, so we need to make the -13 go away. We do that by adding its opposite to both sides of the equation:

  1 +13 = 2x -13 +13

  14 = 2x . . . . . . . . . . . . combine like terms

Finally, we want the coefficient of 2 in the x-term to disappear. We make that happen by multiplying both sides of the equation by 1/2, the reciprocal of that coefficient.

  (1/2)(14) = (1/2)(2x)

  7 = x . . . . the solution

__

It is generally a good idea to <em>check your work</em> by seeing if your solution value satisfies the equation:

  3(7) +1 = 5(7) -13 . . . . put 7 where x is in the original equation

  21 +1 = 35 -13

  22 = 22 . . . . . . x = 7 is the solution

_____

<em>Additional comment</em>

By subtracting 3x from 5x, the result is 2x with a positive coefficient. We could solve the equation just as easily by subtracting 5x from 3x. That result would be ...

  -2x +1 = -13

Subtracting 1 would give

  -2x = -14

and you would multiply by -1/2 to get x=7. I personally like to avoid having this many minus signs show up in the problem. That is why I choose to subtract the x-term with the smallest coefficient.

5 0
3 years ago
❗️Please help BIG POINTS❗️
Inessa [10]
Dude, what kind of question is this??? Here's my best shot.
If they start at the 32-mile mark, then the we can use 32 as the intercept. 50 can be the change in position over time, so 
y=50x+32 (?)

5 0
3 years ago
Please delete my all question​
PolarNik [594]

Answer: what do you mean ?

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Help please. i have no idea how to do this.
Grace [21]

Answer:

ill help u lol im pretty positive its 8

5 0
2 years ago
Find perimeter in cm of the diagram
boyakko [2]

3 sides of square is 3*12=36 cm


perimeter for the full circle is 2 * pi * radius


which is =2 * 22/7 * 12 =75.43 cm


so 360° =75.43 cm


for 150° = 75.43/360 *150 =31.43


all together =36 +31.43 =67.43 cm


8 0
3 years ago
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