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VladimirAG [237]
2 years ago
10

If 2^2x= 8^x-1 what is the value of x?

Mathematics
2 answers:
Alja [10]2 years ago
8 0
2^(2x) = 2^(3x - 3) 
<span>2x = 3x - 3 </span>
<span>3 = x</span>
arlik [135]2 years ago
7 0
Solutions 

2^(2x) = 2^(3x - 3) &#10;&#10;2x = 3x - 3 &#10;&#10;3 = x&#10;&#10;x = 3
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It’s about add and subtract so whats 1-3/8
nikklg [1K]

Answer: -1/4

Step-by-step explanation:

1-3= -2

-2/8 simplifies to -1/4  

8 0
2 years ago
Solve the equation below:<br><br> ln x- ln 5= -1
Anastaziya [24]

Answer:

x = 5/e

Step-by-step explanation:

ln x- ln 5= -1

We know that ln a - ln b = ln (a/b)

ln x- ln 5= -1

ln(x/5) = -1

Raise each side to the power of e

e^ ln(x/5) = e^-1

We know that e^-1 = 1/e

x/5 = 1/e

Multiply each side by 5

x/5 *5 = 1/e * 5

x = 5/e

4 0
3 years ago
SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER TO COMPLETE THIS! NO LINKS OR
slega [8]

Answer:

1)

A)

We must use the formula b x h/2  12 x 8/2 = 48    

A=48

B)

We must use the formula 1/2a root c squared - a squared

Solving and substituing will get you 35.78

2)

A)

We must divide 81 by 2 to get 9. Since this is a square, all sides will be 9. Then, we must add 9 four times to get 36 cm as our perimeter

B) If we draw the square with a diagonal line, we can understand that the diagonal line (hypotenus) is  s root 2.

3) The formula for this area of a triangle is h x b/2. We must substitute the numbers to get our answer:

h x b /2 = 10 x 20/2 = 200/2 = 100

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Step-by-step explanation:

5 0
2 years ago
The price of a shirt is marked down from $12.50 to $10,00. What is the percent decrease of the shirt?
choli [55]

Answer: 20%.

Step-by-step explanation:

Given, The price of a shirt is marked down from $12.50 to $10.00.

Previous price = $12.50

New price = $10.00

Change in price = Previous price - New price

= $12.50 - $10.00

= $2.50

Now, the percent decrease of the shirt = \dfrac{\text{Change in price}}{\text{Prevoius price}}\times100

=\dfrac{2.50}{12.50}\times100\\\\=20\%

Hence, the percent decrease of the shirt = 20%.

7 0
3 years ago
1 plus 1 equals to: Will only give stuff to terrypan
Anna007 [38]

Answer:

2

Step-by-step explanation:

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7 0
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