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elixir [45]
2 years ago
12

Math please help!!!!

Mathematics
1 answer:
Evgen [1.6K]2 years ago
8 0

Answer:

6.3 years

Step-by-step explanation:

Given

P = 22400 --- initial value

r = 12\% -- rate

A = P(0.88)^t --- function

Required

Find t when A = 10000

We have: A = P(0.88)^t

Substitute: A = 10000 and P = 22400

10000 = 22400 * 0.88^t

Divide both sides by 22400

0.4464 = 0.88^t

Take log of both sides

\log(0.4464) = \log(0.88^t)

Apply law of logarithm

\log(0.4464) = t\log(0.88)

Solve for t

t = \frac{\log(0.4464)}{\log(0.88)}

t = \frac{-0.3503}{-0.0555}

t = 6.31

t \approx 6.3

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What is theoretical vs practical domain in an exponential equation. Plz provide an example too
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Answer:

The theoretical probability of an event occurring is an "expected" probability based upon knowledge of the situation. It is the number of favorable outcomes to the number of possible outcomes. Example: ... There are 6 possible outcomes when rolling a die: 1, 2, 3, 4, 5, and 6. The only favorable outcome is rolling a 6.Practical domains and ranges narrow the solution sets to be realistic within defined parameters.The possible values of "x" is called the domain. The possible values of "y" is called the range.

Step-by-step explanation:

7 0
3 years ago
What value of x satisfies the equation 5(x – 3) – 2(x + 1) = 4?
hjlf

Answer:

x = 7

Step-by-step explanation:

To solve:

Distribute 5 among everything inside the first parentheses. You'll get 5x - 15.

Next distribute -2 among everything in the second parentheses. You'll get

-2x - 2.

<u>All together: 5x - </u><u>15</u><u> </u><u>-</u><u>2x </u><u>-</u><u> </u><u>2</u><u> </u><u>= 4</u>

Now combine like terms:

5x - 2x = 3x and -15 - 2 = - 17

<u>All</u><u> </u><u>together</u><u>: 3x -</u><u> </u><u>17 = 4</u>

Add 17 on both sides to get 21, and then divide both sides by 3. Answer is x = 7.

________________________________

Last, don't forget to check your work.

You can plug in 7 for x to get:

5(7 - 3) = 20

5 × 7 = 35

5 × -3 = -15

35 - 15 = 20

-2(7 + 1) = -16

-2 × 7 = -14

-2 × 1 = - 2

-14 -2 = -16

<u>20 - 16 = 4</u>

⬆⬆⬆Therefore this is correct.

Sorry this is a bit lengthy, but hope this helps :)

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Answer:

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Step-by-step explanation:

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