A certain forest covers an area of 4500 km^2. Suppose that each year this area decreases by 8.75%. What will the area be after 5 years?

Answers

Answer 1

The area of forest after 5 years is 2846.93 square kilometer

Solution:

Given that, A certain forest covers an area of 4500 square kilometer

Suppose that each year this area decreases by 8.75%

To find: Area after 5 years

The decrease function is given as:

[tex]y = A(1-r)^t[/tex]

Where,

y is the value after t years

A = initial amount

r = decreasing rate in decimal

t is the number of years

Here in this sum,

A = 4500

t = 5 years

[tex]r = 8.75 \% = \frac{8.75}{100} = 0.0875[/tex]

Substituting the values in formula,

[tex]\begin{aligned}&y=4500(1-0.0875)^{5}\\\\&y=4500(0.9125)^{5}\\\\&y=4500 \times 0.632651\\\\&y=2846.93\end{aligned}[/tex]

Thus the area of forest after 5 years is 2846.93 square kilometer


Related Questions

Joanne's Dress Shop received an invoice dated July 25 for $1,400, with terms of 2/10, 1/15, n/60. On August 8, Joanne's Dress Shop sent a partial payment of $750. The actual amount that should be credited is:

Answers

The actual amount that should be credited is $757.58.

Solution:

Given that,

2% Discount if paid in 10 days.

1% Discount if paid in 15 days, (but greater that 10 days)

Net due in 60 days.

That is,

[tex]\bold{1400\times0.98 = 1372}[/tex] will close the acount on days 1-10

[tex]\bold{1400\times0.99 = 1386}[/tex] will close the acount on days 11-15

And August 8 is Day 15 and falls under the 1% discount rule.

Therefore, we have to divide the partial payment by the complement of the discount rate.

[tex]\bold{\Rightarrow\frac{750}{0.99} = 757.58}[/tex] from the balance, and [tex]\bold{1400.00 - 757.58 = 642.42}[/tex] is due by day 60.

GUYS PLEASE HELP ME PLEASE IT'S URGENT PLEASE GUYS PLEASE IF IT'S CORRECT I WILL MARK YOU BRANLIES PLEASE!!!! In the box, type the number that correctly completes the sentence.

Bryan had 24 coins in his pocket. He lost one-third of his coins. One-half of the lost coins were pennies. Bryan lost Answer
pennies.

Answers

Answer:

Its 4

Step-by-step explanation:

24÷3=8÷2=4

Answer:

the amount of pennies that Bryan lost is 16

Answer in factores form

Answers

Where are the answers

The ratio of pages read to minutes for Hang is 5 : 8. Who has a greater ratio of pages read to minutes than Hang? Select all that apply. A. Kira:2 pages read every 4 minutes B. Joe:6 pages read every 9 minutes C. Quon:5 pages read every 7 minutes D. Lulu:10 pages read every 13 minutes E.

Answers

Answer:

B, C, and D

Step-by-step explanation:

By doing 5÷8 = .625 you know that Hang can read .625 of a page per minute.

You can do this for the rest of the people finding that Kira reads .5 page per minute which is a slower/ smaller ratio, Joe rate is .66, Quon's ratio is .71 and Lulus rate is .76, the only rate that is smaller than Hangs is Kira,s, leaving you with Joe, Quon, and Lulu to be your answer

Joe, Quon, and Lulu have a greater ratio of pages read to minutes than Hang. Their respective ratios are 0.6667, 0.714, and 0.769, each higher than Hang's ratio of 0.625.

Let's determine who has a greater ratio of pages read to minutes than Hang.

Hang's ratio is 5:8 or 5/8 = 0.625.

Kira: 2 pages in 4 minutes,

ratio = 2/4 = 0.5 (less than 0.625)

    2. Joe: 6 pages in 9 minutes,

ratio = 6/9 = 0.6667 (greater than 0.625)

    3. Quon: 5 pages in 7 minutes,

ratio = 5/7 ≈ 0.714 (greater than 0.625)

    4. Lulu: 10 pages in 13 minutes,

ratio = 10/13 ≈ 0.769 (greater than 0.625)

So, Joe, Quon, and Lulu have a greater ratio of pages read to minutes than Hang.

26
24
The length of the unknown leg is _____

Answers

it said it was wrong for me

The length of the unknown leg is approximately 35.4 inches.

The image shows a right triangle with the following dimensions:

The base of the triangle is 24 inches.

The height of the triangle is 26 inches.

We can use the Pythagorean theorem to solve for the length of the missing leg. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two legs.

Let us call the unknown side "ao".

In this case, we can write the equation as follows:

ao^2 = 24^2 + 26^2

where:

ao is the length of the hypotenuse (unknown)

24 is the length of the base

26 is the length of the height

Simplifying the equation:

ao^2 = 576 + 676

ao^2 = 1252

ao = sqrt(1252)

ao ≈ 35.4 inches

Therefore, the length of the unknown leg is approximately 35.4 inches.

x = 3y + 4
3x = 9y + 12

Do these equations have one solution, no solution, or infinitely many solutions?

Answers

Answer:

Infinitely Many Solutions

Step-by-step explanation:

Since it's given that x = 3y + 4 we can use this in second expression

3×(3y+4) = 9y + 12 ➡ 9y + 12 = 9y + 12 add the like terms

9y - 9y = 12-12 ➡ 0 = 0 there's infinitely many solutions for second equation

Same goes for first equation.

What is the equation of the line of the best fit for the following data? Round to the slope and y-intercept of the line to three decimal places

Answers

Answer:

D. [tex]y=-0.927x+13.634[/tex]

Step-by-step explanation:

We graph the points on the graph. The graph is attached.

Let us take two points (1, 14) and (15, 1), and calculate the slope [tex]m[/tex]between them (we choose these points because the line passing through them will be the best fit for all points)

[tex]m=\frac{14-1}{1-15} =\frac{13}{-14} =-0.9286[/tex]

Thus we have the equation

[tex]y=-0.9286x+b[/tex]

Let us now calculate [tex]b[/tex] from the point [tex](1,14)[/tex]

[tex]14=-0.9286(1)+b[/tex]

[tex]b=14.9286[/tex]

So the equation we get is

[tex]y=-0.9286x+14.9286[/tex]

Let us now turn to the choices given and see which choice is closest to our equation: we see that choice D. [tex]y=-0.927x+13.634[/tex] is the closest one, so we pick it.

Irrational conjugate theorem

Answers

Answer:

The irrational conjugate theorem states that if a polynomial equation has a root (a + √b), then we can say that the conjugate of (a + √b), i.e. (a - √b) will also be another root of the polynomial.

Step-by-step explanation:

The irrational conjugate theorem states that if a polynomial equation has a root (a + √b), then we can say that the conjugate of (a + √b), i.e. (a - √b) will also be another root of the polynomial.

For example, if we consider a quadratic equation x² + 6x + 1 = 0, then two of its roots are - 3 + √8 and - 3 - √8 and they are conjugate of each other. (Answer)

The Irrational Conjugate Theorem states that if a complex number is irrational, then its conjugate is also irrational. It is used in mathematics to prove this relationship. The theorem is based on the definition of the conjugate of a complex number, and a proof by contradiction approach can be used to prove it.

The Irrational Conjugate Theorem is used in mathematics to prove that if a complex number is irrational, then its conjugate is also irrational. This theorem is based on the concept of the rational and irrational parts of a complex number. Let's define a complex number as z = a + bi, where a and b are real numbers and i is the imaginary unit. The conjugate of z, denoted by [tex]\bar Z[/tex], is obtained by changing the sign of the imaginary part. So, if z = a + bi, then [tex]\bar Z = a - bi.[/tex] The Irrational Conjugate Theorem states that if a + bi is an irrational complex number, then a - bi (the conjugate) is also irrational.

To prove this theorem, we can use a proof by contradiction approach. Let's assume that a + bi is irrational and a - bi (the conjugate) is rational. We can then use valid reasoning to arrive at contradictory results. For example, we can add a + bi and a - bi to get 2a, which is a rational number. However, this contradicts our initial assumption that a + bi is irrational. Therefore, our assumption must have been false and the theorem is proven.

What is 1/4+3/8 what is the answer to that

Answers

Answer:

5/8

Step-by-step explanation:

1/4 = 2/8

2/8 + 3/8 = 5/8

Answer:

5/8

Step-by-step explanation

1/4 has a common denominator as 3/8 and when u find the common denominator add and ur good to go

Line that is perpendicular to y=3x-2 and passes through the point (-9,5)

Answers

Answer:

y = -1/3x + 2

Step-by-step explanation:

The slopes of perpendicular lines are negative reciprocals.

The line y = 3x - 2 has slope 3.

The perpendicular line has slope -1/3.

Now we find the equation of the line that has slope -1/3 and passes through (-9, 5).

y = mx + b

y = -1/3x + b

5 = (-1/3)(-9) + b

5 = 3 + b

b = 2

The equation of the perpendicular is

y = -1/3x + 2

Johnny spends half of his weekly paycheck on
groceries. He then earns $55 doing yard work for
his grandma. He ends the week with $216. How
much is his paycheck?

Answers

Answer:

$ 322

Step-by-step explanation:

x = his paycheck

x - 1/2x + 55 = 216

1/2x + 55 = 216

1/2x = 216 - 55

1/2x = 161

x = 161 * 2

x = $ 322 <===


Heather purchased a motorcycle for $4800 with 40% down. She will make 24
payments of $135.57 at 12% interest. What is the total paid for the motorcycle
including the downpayment?

Answers

Answer:

$5952

Step-by-step explanation:

The principal of $4800 will become after 24 months at an interest of 12% APR,

[tex]4800(1 + \frac{2 \times 12}{100}) = 5952[/tex] dollars.

Now, the monthly payment is $135.57 for 24 months.

So, the payment by installment is $(135.57 × 24) = $3253.68.

Therefore, the down payment was $(5952 - 3253.68) = $2698.32.

Therefore, the total paid for the motorcycle including the down payment was $5952. (Answer)

will make brainiest if you answer the question correctly

Answers

Answer:

B, a cold and nasty winter day

Step-by-step explanation:

.

A. 37
B. 38
C. 39
D. 40

Answers

Hello ^w^

I believe the answer you are looking for is A

I found this answer by adding up the lengths of all the sides.

S -> T = 8

S -> R = 7

Q -> R = 6

P -> Q = 6

P -> T = 10

10 + 6 + 6 + 7 + 8 ->  37

A -> 37

If I am incorrect, please inform me.

Have a good day!

Find x- the length of the hypotenuse of the triangle

Answers

Answer:

X= 7

Step-by-step explanation:

What is the overall slope? ​

Answers

Answer:

2.2

Step-by-step explanation:

It is a 2.2 slope because you just have to divide the depth of water by the time by 2.2 or multiply the time by 2.2 to get the depth of water :)

Answer:

(0,0)&(2,4.4)

(4.4-0)/(2-0)= 4.4/2= 2.2 is the overall slope

What is the distance between (4, 7) and (2, 2)?

Answers

The distance between (4,7) and (2,2) is
(4,10)

1-4 Determine the value of the following

5. Find m

Answers

Answers:

1) [tex]cos B=\frac{4}{5}=0.8[/tex]

2) [tex]csc A=\frac{5}{3}=1.66[/tex]

3) [tex]sec B=\frac{5}{4}=1.25[/tex]

4) [tex]tan A=\frac{3}{4}=0.75[/tex]

5) [tex]z=38.65\°[/tex]

Step-by-step explanation:

First exercise:

We have a right triangle with the values of each side an we have to find the following trigonometic functions (taking into account the secant function [tex]sec[/tex] is the inverse of the cosine, the cosecant [tex]csc[/tex] is the inverse of the sine):

1) [tex]cos B=\frac{Adjacent-side}{hypotenuse}[/tex]

[tex]cos B=\frac{4}{5}=0.8[/tex]

2) [tex]csc A=\frac{1}{sin A}[/tex]

[tex]\frac{1}{sin A}=\frac{1}{\frac{5}{3}}[/tex]

Then:

[tex]csc A=\frac{5}{3}=1.66[/tex]

3) [tex]sec B=\frac{1}{cos B}[/tex]

[tex]frac{1}{cos B}=\frac{1}{\frac{4}{5}}[/tex]

Then:

[tex]sec B=\frac{5}{4}=1.25[/tex]

4) [tex]tan A=\frac{opposite-side}{adjacent-side}=\frac{3}{4}[/tex]

Then:

[tex]tan A=\frac{3}{4}=0.75[/tex]

Second exercise:

5) Here, we are given another right triangle and we have to find the measure of the angle [tex]z[/tex].

So, according to the figure, we can use the tangent function:

[tex]tan z=\frac{opposite-side}{adjacent-side}[/tex]

[tex]tan z=\frac{8}{10}[/tex]

Finding the value of [tex]z[/tex]:

[tex]z=tan^{-1}\frac{8}{10}[/tex]

[tex]z=38.65\°[/tex]

Evaluate the expression when c=4.
c²-9c+8

Answers

Answer:

-12

Step-by-step explanation:

Answer:

Your answer

Step-by-step explanation:

When c=4. Then,

c²-9c+8

= 4²-9c+8

= 4*4-9c+8

= 16-94+8

= 78+8

= -86 ans

What equation is equivalent for 2x-2+4

Answers

Answer:

2x+2 or 2(x+1)

Step-by-step explanation:

2x-2+4=2x+2

in june , a camp has 325 campers and 26 counselors, in july,265 campers leave and 215 new campersarrive.How many counselors does the camp need in july to keep an equivalant ratio of campers to counselors

Answers

Answer:

22 counselors

Explanation:

1. Ratio of campers to counselors in june:

number of campers: 325

number of counselors: 26

Ratio = number of campers / number of counselors

Ratio = 325 campers / 26 counselors

2. Ratio of campers to counselors in july:

number of campers = 325 - 265 + 215 = 275

number of counselors = x (unknown)

Ratio = 275 campers / x

3. Equivalent ratios:

325 campers / 26 counselors = 275 campers / x

Solve for x:

x = (26counselors/325campers) × 275campers = 22 counselors ← answer

Final answer:

The camp needs approximately 22 counselors in July to maintain the original camper-to-counselor ratio of 12.5:1 that was present in June, when there were 325 campers and 26 counselors.

Explanation:

The question asks how many counselors the camp needs in July to keep an equivalent ratio of campers to counselors from June. In June, the camp had 325 campers and 26 counselors. The ratio of campers to counselors is 325:26, which simplifies to approximately 12.5:1. If 265 campers leave in July and 215 new ones arrive, the total number of campers for July is 325 - 265 + 215 which equals 275. To maintain the same ratio, we divide the number of July campers by the original ratio:

Calculate the new number of campers: 325 - 265 + 215 = 275Divide the new number of campers by the ratio: 275 / 12.5 = 22Round to the nearest whole number if necessary. Here, it's not as 22 is a whole number.

The camp needs approximately 22 counselors in July to maintain the same camper-to-counselor ratio as in June.

Through: (3,4) perp. to y = -2x - 4

Answers

4=-2(3) +b
4=-6 +b
10=b
Y=-2x+10

Which is the best estimate for (6.3 times 10 Superscript negative 2 Baseline) (9.9 times 10 Superscript negative 3 Baseline) written in scientific notation?
6 times 10 Superscript negative 4
60 times 10 Superscript negative 5
6 times 10 Superscript 7
6 times 10 Superscript 7

Answers

Answer:

First option:  [tex]6*10^{-4}[/tex]

Step-by-step explanation:

The expression is:

 [tex](6.3*10^{-2})(9.9*10^{-3})[/tex]

Scientific Notation (which is also known as "Standard form"), is a way to write numbers. It is very useful to handle very small numbers and very large numbers.

By definition, Scientific Notation has the following form:

[tex]a*10^n[/tex]

Where the coefficient "a" is a number from 1 to 10 without including 10, and the exponent "n" is an Integer.

Given:

[tex](6.3*10^{-2})(9.9*10^{-3})[/tex]

If you want to estimate the result, you can round the coefficients to the nearest whole number. Since the decimal point must be just after the first digit, you know that:

[tex](6*10^{-2})(10*10^{-3})=(6*10^{-2})(1*10^{-2})[/tex]

Now you need to remember the Product of powers properties:

[tex](a^m)(a^n)=a^{(m+n)}[/tex]

Then, solving the multiplication, you get:

[tex]6*10^{-4}[/tex]

Answer:

the answer is a

Step-by-step explanation:

i took the test... 100% i swear


What is the next number in the pattern
2, 6, 4, 12, 10, 30, 28

Answers

Answer:

84, 82, 246

Step-by-step explanation:

first multiply by 3 for first term

next term, use previous term minus 2

2/3 x 3/5 (multiply using Greatest Common Factor)

Answers

Answer:

.4

Step-by-step explanation:

Use a caluculator

Answer:

.4

Step-by-step explanation:

In a class of 40 students, 15 offer physics, 20 offer history and 3 offer both physics and history. How many student offer neither physics nor history?​

Answers

Answer:

2 students.

Step-by-step explanation:

add together all of the students and then subtract that from 40.

20+15+3 = 38

40-38 = 2

Answer:

3 athdwnts it says

Step-by-step explanation:

The hypotenuse of a right triangle is 5 feet. One leg of the triangle is 3 feet. What is the length of the other leg (rounded to the nearest hundredth)?

Answers

Answer: 4

Step-by-step explanation:

To solve this problem we can use the Pythagorean Theorem to find the length of the other LEG of a right triangle

Pythagorean Theorem can be written as A^2+B^2=C^2

Now we plug in the values. C represents the hypotenuse while A and B represent the legs. We only are given one leg and the hypotenuse so we will be solving for B. (Or A if you swap the legs around)

3^2+b^2=5^2

9+b^2=25

Subtract 9 from both sides:

16=b^2

Now we take the square root of both sides

b=4

The length of the other leg of the triangle is 4 feet.


This is a basic 3-4-5 Triangle. Anytime the hypotenuse of a triangle is 5 and the leg is 3 the other leg will always be 4.

15 multiplied by 1/5

Answers

Answer:

iT WAS 3 Bum

Step-by-step explanation:

3 years ago a father was 3 times as old as his son, in five years time he will be twice as old as his son, what will be the sum of their years in four years time​

Answers

Answer: 46 years

Step-by-step explanation:

Let the father's age be x and the son's age be y, then 3 years ago:

Father = x - 3

son     = y - 3

Then , from the first statement :

x - 3 = 3 ( y - 3 )

x - 3 = 3y - 9

x     = 3y - 9 + 3

x     = 3y - 6 .......................................... equation 1

In five years time

father = x + 5

son = y + 5

Then , from the second statement

x + 5 = 2 ( y + 5 )

x + 5 = 2y + 10

x       = 2y + 10 - 5

x       = 2y + 5 ........................ equation 2

Equating equation 1 and 2 , we have

3y -6 = 2y + 5

add 6 to both sides

3y = 2y + 5 + 6

subtract 2y from both sides

3y - 2y = 11

y = 11

substitute y = 11 into equation 1 to find the value of x

x = 3y - 6

x = 3(11) - 6

x = 33 - 6

x = 27

This means that the father is presently 27 years and the son is presently 11 years.

In four years time

father = 27 + 4 = 31

son = 11 + 4      = 15

sum of their ages in four years time will be

31 + 15 = 46 years

Answer:

46 years

Step-by-step explanation:

Answer:

Step-by-step explanation:

In solving this, we'll make some keen assumptions to solve the question.

We'll represent the father's age with "a"

And represent the sons age as "b"

Lets interpret the question.

3 years ago, (means in the past), we'll subtract.

Therefore:

Father's age = a - 3

Sons age = b - 3

The sentence said, " 3 years ago, father was 3 times the sons age*. Interpreting that becomes:

a - 3 = 3 times (b - 3)

Simplifying that gives :

a - 3 = 3(b - 3)

a - 3 = 3b - 9

a = 3b - 9 + 3

a = 3b - 6 ( FIRST EXPRESSION )

The next line says: In five years time (that's in the future, hence we add) he'll be twice his sons age.

Therefore I become:

Father : a + 5

Son : b + 5

a + 5 = 2(b + 5)

a + 5 = 2b + 10

a = 2b + 5 ( SECOND EXPRESSION)

Equating the first and second equation to solve for "a" - the father's age

3b - 6 = 2b + 5

b = 5 + 6

b = 11 years (Sons age)

Substitute b = 1 in the first expression.

a = 3b - 6

a = 3(11) - 6

a = 33 - 6

a = 27 years (Father's age)

Let resolve, the last sentence:

What will be the sum of their ages in 4 years time. (SINCE IT'S IJ THE FUTURE, WE ADD)

Father's age in four years time: 27 + 4 = 31

Son's age in four years time: 11 + 4 = 15.

The sum of their ages in same four years time becomes:

31 + 15 (years)

46 years

5(2c + 7) - 3c = 7(c + 5)

Answers

The two side are equal.

35 + 7c = 7c + 35
Final answer:

To solve the equation 5(2c + 7) - 3c = 7(c + 5), distribute the values inside the parentheses, combine like terms, and solve for c.

Explanation:

To solve the equation 5(2c + 7) - 3c = 7(c + 5), we will distribute the values inside the parentheses. This gives us 10c + 35 - 3c = 7c + 35. Next, we will combine like terms by subtracting 7c from both sides of the equation and adding 3c to both sides. This simplifies the equation to 10c - 7c = 35. By combining the terms on the left side, we get 3c = 35. Finally, we can solve for c by dividing both sides of the equation by 3, which gives us c = 35/3 or 11.67.

Learn more about Solving Equations here:

https://brainly.com/question/19297665

#SPJ2

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