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barxatty [35]
3 years ago
15

How to solve the exponential equation for 3^k2 • 3^-k+2 = 81

Mathematics
1 answer:
wariber [46]3 years ago
6 0

Answer:

k=2

Step-by-step explanation:

3^k*2 * 3^-k+2 = 81

Factor out 81 to be : 3^4

Rewrite the equation:

k*2 - k+2 = 4

k^2 - 2k = 4

Simplify : k+2 = 4

            <u>    - 2   - 2</u>

             k = 2

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The functions f(x)=−3/4x+2 1/4 and g(x)=(1/2)^x+1 are shown in the graph.
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-3x/4 + 9/4 = (1/2)^x + 1
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(Using log rules)

㏑|-3x/4| - ㏑|2^-x| = ㏑|-5/4|
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3 0
3 years ago
Plz help me i need help before 1/28/22
garik1379 [7]

Answer:

3/4

Step-by-step explanation:

three-fourths also means 3 out of 4. This can be shown as a fraction as 3/4

5 0
2 years ago
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Determine the inverse of the following.<br> y =- log(x - 1) + 2
Dvinal [7]

Answer:

f^{-1}(x)=10^{-x+2}+1

Step-by-step explanation:

4 0
3 years ago
Steven's Diner sold 60 milkshakes last week. ​25% of the milkshakes had whipped cream on top. ​ How many milkshakes with whipped
denis-greek [22]

Answer:

the answer is 15.

Step-by-step explanation:

you find the answer by turning 25% into 0.25 then you multiple it by 60, this results in 15.

3 0
3 years ago
Plz, Help I'll give brainlist to whoever answers all questions!
Tatiana [17]

Answer:

Step-by-step explanation:

1. Area => 7.5 x 2 = 15 m² (Choice B)

2. Area => 5 x 11 = 55 in² (Choice B)

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2 years ago
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