1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Harlamova29_29 [7]
3 years ago
10

Solve 3^2−1 - 12. 3^X+81=0 with proper steps and explanation

Mathematics
1 answer:
atroni [7]3 years ago
4 0

Answer:  x = 1.788587

Step-by-step explanation: 3^2 − 1 - 12. 3^X + 81 = 0

                                             -12^X + 89 = 0

                                             -12. 3^X + 89 + -89 = 0 + -89

                                             -12. 3^X = -89

                                             -12. 3^X/-1 = -89/-1

                                              12. 3^X = 89

                                              log (12.3^X) = log (89)

                                              x * (log (12.3)) = log (89)

                                              x = log (89)/ log (12.3)

                                              x = 1.788587

You might be interested in
A company is planning a four-year project, with an initial cost of $1.67 million. This investment cost is amortised to zero over
yaroslaw [1]

Answer:

The Net Present Value =  $451180.733

Step-by-step explanation:

Given that:

the initial cost of the project is $1670000

the initial increase in working capital is $198000

The total investment will be ; initial cost of the project + initial increase in working capital

The total investment = $1670000 + $198000

The total investment = $1868000

So, This investment cost is amortised to zero over four years; This implies that the project will depreciate in four years;

Now; lets determine the rate of the annual depreciation

The annual depreciation = \dfrac{Initial \ cost \  of \  project }{life \ of \ project}

The annual depreciation = \dfrac{1670000}{4}

The annual depreciation = $417500

Over to the annual operating cash flow; the annual operating cash flow can be calculated as follows:

annual operating cash flow = (sales - cost) × (1 - tax rate )+ (annual depreciation × tax rate )

Given that the tax rate = 21% = 0.21

annual operating cash flow = (1850000 -1038000)×(1-0.21)+(417500× 0.21)

annual operating cash flow = 812000 × 0.79 + 87675

annual operating cash flow = 641480 +  87675

annual operating cash flow = $729155

So; let's calculate the after tax salvage value for the project

We know that the sales values for the project in four years is $435,000 (i.e the disposal rate of the asset after four years)

Thus; the book value is zero

The after tax salvage value for the project can now be determined by the relation:

after tax salvage value = sale value - tax (sale value - book value)

after tax salvage value =  435000  - 0.21 (435,000 -0)

after tax salvage value = 435000 - 91350

after tax salvage value = $343650

Similarly; given that the recovering rate of the project is $198000;

The cash flow in year 4 will be: annual operating cash flow + after tax salvage + recovery working capital

cash flow in year 4 = $(729155 + 343650 + 198000)

cash flow in year 4 = $ 1270805

This implies that the cash flow from year one to three is : 729155

the cash flow in year four is : 1270805

Given that the Required return rate = 16.4% = 0.164

We can therefore determine the Present cash inflows by using the relation:

Present \ Value = \dfrac{c_1}{(1+r)^1}+ \dfrac{c_2}{(1+r)^2}+ \dfrac{c_3}{(1+r)^3}+ \dfrac{c_4}{(1+r)^4}

Present \ Value = \dfrac{729155}{(1+0.164)^1}+ \dfrac{729155}{(1+0.164)^2}+ \dfrac{729155}{(1+0.164)^3}+ \dfrac{1270805}{(1+0.164)^4}

Present \ Value = \dfrac{729155}{1.164^1}+ \dfrac{729155}{1.164^2}+ \dfrac{729155}{1.164^3}+ \dfrac{1270805}{1.164^4}

Present Value = $(626421.8213 + 538163.0767 + 462339.413+692256.4225)

Present Value = $2319180.733

Finally, The net present value = Present Value - Total Investment

Net Present Value = $(2319180.733 - 1868000)

Net Present Value =  $451180.733

Therefore; The Net Present Value =  $451180.733

5 0
3 years ago
The area of a certain desert​ (Desert 1) is nine times the area of another desert​ (Desert 2). If the sum of their areas is 40,0
iris [78.8K]
X= Desert 2
y= Desert 1 = 9x (because it is 9 times the area of Desert 1)

Add the two areas together.

x + 9x = 40,000,000
10x = 40,000,000
Divide both sides by 10
x= 4,000,000 sqr mi=area of Desert 2

9x= area of Desert 1 = y
9(4,000,000)= 36,000,000 sqr mi

6 0
4 years ago
33% of the book in the school library are fiction books.If there are 1675 nonfiction books.How many books are there in the schoo
never [62]

Answer:

The answer is 552.75

7 0
3 years ago
Given the pre-image point A (4,-9) and it's image point A' (12, -27), determine the scale factor
WARRIOR [948]

Answer:

scale factor = 3

Step-by-step explanation:

To determine the scale factor, calculate the ratio of the image x and y coordinates to the original x and y coordinates, that is

scale factor = \frac{12}{4} = \frac{-27}{-9} = 3

8 0
3 years ago
Write the product in its simplest form: 3a^4*(-2a^6)
Ymorist [56]

Answer:

-12a^{10}

Step-by-step explanation:

3a^{4} *-2a^6

multiply constants and add the exponents

-12a^{10}

7 0
4 years ago
Other questions:
  • Are the terms 2s and 3s² like terms?
    7·1 answer
  • Plz help me I need to turn it in on Monday
    13·1 answer
  • Find the midpoint of the segment with the following endpoints. (2, 6) and (6, 2) and (6,2)
    6·1 answer
  • Today only, a table is being sold at a 71% discount. The sale price is $197.20.
    14·1 answer
  • Y=mx+b form of x=5 and y=2
    15·1 answer
  • I GIVEEE BRAINLILST TTT
    13·1 answer
  • I am actually in 4th grade but anyway I need see ​
    5·1 answer
  • Please help please please help me help please
    8·1 answer
  • -
    9·2 answers
  • Find the surface area and volume of the figure below. Round your answers to the nearest tenth. (50 pts)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!