Mathematics High School

HELP!!
Select the correct answer.
Scientists studying biodiversity of amphibians in a rain forest have discovered that the number of species is decreasing by 2% per year. There are currently 74 species of amphibians in the rain forest. Which logarithmic function models the time, , in years, it will take the number of species to decrease to a value of n?

Answers

Answer 1

Answer:

Option A: f(x) = log_0.98 (n/74)

Step-by-step explanation:

We are told that that the number of species is decreasing by 2% per year.

Thus, number of species each year is 98% or 0.98 of number of species the previous year. .

We are told that there are currently 74 species of amphibians in the rain forest.

Thus, n/74 will represent a fraction of the current number of species.

Thus, the logarithmic function that models the time can be written as;

f(x) = log_0.98 (n/74)

Answer 2

Answer:

A. f(n) = log0.98(n/74)

(got it right on edmentum)

for your assurance please look at the picture below↓

Related Questions

Write the point-slope form of the given line that passes through the points (0, 3) and (4,0). Identify (x, y) as the X-
Intercept of the line. Include your work in your final answer. Type your answer in the box provided to submit your
solution.

Answers

Answer:

y-3= -3/4 -(x+0)

Step-by-step explanation:

y2-y1 3-0= 3

x2-x1 0-4= -4

slope is - 3/4

y= mx=b

y = -3/4x + 3

Umm I kinda need help pls

Answers

Answer:

what help would i do

Step-by-step explanation:

Convert 5 kilometers to meters

Answers

Answer:

5,000 meters

Step-by-step explanation:

Multiply by 1000, so 5 x 1000 is 5000.

Help ASAP I need it quick please and thank you!!!!!

Answers

If I remember correctly then top right is quadrant 1 which is (+,+) then quadrant 2 is top left which is (-,+). The answer should be quadrant 2.

write your answer as a fraction or as a whole or mixed number 5 3/4 times 2 1/3

Answers

Answer:

13 5/12

Step-by-step explanation:

5 3/4 X 2 1/3

=23/4 X 7/3

=161/12

find the value of x that makes m|n

Answers

Answer:

x = 60°

Step-by-step explanation:

Two parallel lines will have the same angle if another line intersects them. That means 2x+15° = 135°.

2x = 120°

x = 60°

Answer:

opposite number of -18

(GR.7MATH)

Can somebody plz answer all of these correctly.. I’m a little confused :)
(OnLy answer if u done it before)
WILL MARK BRAINLIEST)

Answers

Answer:

kkajjjssnensi

Step-by-step explanation:

hdhdb

jakakke

jjwjne

kakam

Answer:

31. -12, -2

32. 6, -3

33. -4, 4

34. 8, 1

35. -6, 2

36. -3, 2

37. -6, -5

38. 8, -9

39. 7, 0

Step-by-step explanation:

31. -12 + -2 = ‐14 and -12 x -2 = 24

32. 6 + -3 = 3 and 6 x -3 = -18

33. -4 + 4 = 0 and -4 × 4 = -16

34. 8 + 1 = 9 and 8 x 1 =8

35. -6 + 2 = -4 and -6 x 2 = -12

36. -3 + 2 = -1 and -3 x 2 = -6

37. -6 + -5 = -11 and -6 x -5 = 30

38. 8 + -9 = -1 and 8 x -9 = -72

39. 7 + 0 = 7 and 7 x 0 = 0

Trent rakes leaves in his neighborhood. The equation y = 10x represents the amount of money he earns y for every yard x. What is the constant of proportionality?

Answers

Answer:

The constant of proportionality is 10

A restaurant charges $8 per burger basket ordered. The charles family orders at least 3 burger baskets but no more than 7 burger baskets a week. If x, represents the number of burger baskets ordered the total cost can be represented by f(x) = 8.50x. What is the domain of the function for this situation?

A- 8,32,40,48,56
B- 3,4,5,6,7,
C- 3 D- 8

Answers

Answer:

Step-by-step explanation:

Two trains leave Raleigh at the same time one traveling north and the other south the first train travels at 50 miles per hour and the second at 60 miles per hour in how many hours will the trains be in 275 miles apart

Answers

Answer:

2.5 hours

Step-by-step explanation:

Step one:

given data

for train one

speed= 50miles per hour

for train two

speed= 60miles per hour

the total distance between both trains=275miles

Step two:

the expression for speed= distance/time

so that, distance= speed*time

let the time be t

we are going to combine both distances

train one distance =50t

train two distance =60t

Hence total distance

50t+60t=275

110t=1=275

t=275/110

t=2.5 hours

It will take 2.5 hours

help plz , i don't know how to find it

Answers

Answer:

y = 2x + 4

Step-by-step explanation:

y = mx+b

m represents the slope, and b is the y-intercept

The slope is 2 as it's going up 2 unit squares each time, and the b is 4 because that's where the y-axis gets intercepted.

so the answer is y = 2x + 4

Answer:

Hii have a another app thatcan helpyouu can download mathscanner hope ithelps

Arrange the following from greatest to least (integers)
3,7,-15,9

Answers

Answer:

9 , 7, 3, -15

Step-by-step explanation:

the bigger the number before the zero the lesser value it has and any number after the zero has more value

f (x)=2^2-7x-6 Find f (6)

Answers

Plug in 6 for x
2^2 - 7(6) - 6
4 - 42 - 6 = -44

Edwin has $50 in his account to buy lunches at school. Each lunch costs $2.50. write a linear equation to represent the situation

Answers

Answer:

y=-2.5x+50

This shows how many he can buy

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Identify three solutions of the inequality x < 1

Answers

Answer:

-1, -2, -3

Step-by-step explanation:

any number less than 1 will work

Answer:

-3, -4,-5

Step-by-step explanation:

< means less than. In this situation, you want x to be less than 1, so basically, any number under 1 is correct.

What is the slope of the line?

Answers

Answer:

Step-by-step explanation: the rise is 2 and the run is 1 and its rise over run so 2/1 and that equals 2

Answer:

the slope is 2

Step-by-step explanation:

(2,1), (0,-3)

m=2

What strategy would be the best to solve this problem?

To get into shape, Miles ran for 1 minute on Monday, 3 minutes on Tuesday, 6 minutes on Wednesday, and 10 minutes on Thursday. If he continues, how many minutes will Miles run on Sunday?
A. guess, check and revise
B. work backwards
C. use a formula
D. look for patterns

Answers

There are 5 cars on saturat are a car fair.8 cars thursaday and 9 times as manu on saturat now manu cars ser a there than thursday altogether.

A. 34

B.23

C.2

D.56

Answer:

My answer would be C or D.

I will mark you brainiest and I will gave you 100 points to answer the question correctly A point is chosen in the circle at random. Determine which of the statements are true. Check all that apply.
It is unlikely the point is in region A.
It is likely the point is in region C.
It is likely the point is in region G.
It is impossible for the point to be in region H.
It is certain that the point will land in a lettered region.
I try C,D,E but I got wrong.

Answers

Answer:

It is unlikely the point is in region A.

It is impossible for the point to be in region H.

It is certain that the point will land in a lettered region.

Step-by-step explanation:

Hope it helps!

4. Find the slope of the line through the
points A(8, 7) and B(5,-2).
Explanation

Answers

Answer:

Your slope would be 3.

Step-by-step explanation:

To find the slope from two points, you would need to use the formula: y2-y1/x2-x1

In this case, the equation would look like -2-7/5-8.

-2 - 7 = -9

5 - 8 = -3

-9/-3 = 3

Slope: 3

use the multiplier method to increase £258 by 43

Answers

Answer:

The new value after an increase

of £258 by 43 will be: 368.94

Step-by-step explanation:

As we have to increase £258 by 43 using the multiplier method.

Let 'n' represent the new value after the increase of £258 by 43 using the multiplier method.

Using the formula

n = 258 + percentage increase

[tex]=258+\left(43\%\:258\right)[/tex]

[tex]=258\:+\:43\%\:\times 258[/tex]

Factoring out 258

[tex]=\left(1\:+\:43\%\right)\:\times \:258[/tex]

as 1 = 100 / 100 = 100%

[tex]=\left(100\%\:+\:43\%\right)\:\times \:258[/tex]

[tex]=143\%\:\times \:258[/tex]

[tex]=\frac{143}{100}\times 258[/tex]

[tex]=\:\frac{143\times 258\:\:}{100}[/tex]

[tex]=\:\frac{36,894\:\:}{100}[/tex]

[tex]=368.94[/tex]

Therefore, the new value after an increase

of £258 by 43 will be: 368.94

I need help ill giv3 brainlyness

Answers

The answer is d hope this helps☺️

Answer:

i think the answer if (-9,-3)

Step-by-step explanation:

Tell me if i got it right so i can see where i made a mistake IF i got it wrong

help pls im so confused

Answers

Answer:

Step-by-step explanation:

A to B

A line segment is when two dots are connected with a solid line.

A to C is incorrect because it has arrows.

The answer is C chose C and good luck to you cccccccc

Does the table show a proportional relationship? If so, what is the value of y when x is 11

Answers

Answer:

Yes, the table shows a proportional relationship

The value of y when x is 11 is 1331

Step-by-step explanation:

Let us check the relation between x and y in the table

∵ x = 4 and y = 64

∵ 64 = 4³

∴ y = x³

∵ x = 5 and y = 125

∵ 125 = 5³

∴ y = x³

∵ x = 6 and y = 216

∵ 216 = 6³

∴ y = x³

∵ x = 10 and y = 1000

∵ 1000 = 10³

∴ y = x³

∵ All the values on the table give the same relation

∴ x and y are proportion

∴ The table shows a proportional relationship

∵ y = x³

∵ x = 11

∴ y = (11)³

∴ y = 1331

∴ The value of y when x is 11 is 1331

Simplify: 27w + 5w math

Answers

Answer: 32w

Step-by-step explanation:

Find the amplitude:
y= 5 cos (1/4x)

Answers

Answer:

for 5cos(1/4x)

Amplitude=5

what is 1,630 divided by 44 as a Decimal

Answers

Answer: 18.5227272727

Step-by-step explanation:

1630/44 = 37.0454545455

Therefore 37.0454545455 to 2 decimal places = 37.05

1630/44 divided by 2 » (1630/44) ÷ 2 » 37.0454545455 ÷ 2

= 18.5227272727

Answer:

3704.54545455

Step-by-step explanation: simplified

The garden itself is 5 yards by 8 yards. The total area need to build this landscape
design is 60.9525 square yards. What is the width of the walkway?
O a) 0.725 yards
b) 2.9 yards
C) 1.45 yards
d) 4.58 yards

Answers

Answer: 1.45

Step-by-step explanation:

Help me out fast please

Answers

Answer:

just subtract the sqaush by tomatoes

Answer:

0.5

Step-by-step explanation:

65.92÷32=2.06

49.92÷32=1.56

2.06-1.56=0.5

please help for brainlyist and 5 star

Answers

Answer:

Step-by-step explanation:

Vecayse Sjuare tmes

The radius of a circle is 8 in. Find its area in terms of \piπ.

Answers

Answer:

201.06 in

Step-by-step explanation:

I'm guessing you meant πr² because that's what you use to find the area of a circle.

Anyways, we know what the radius is, it's 8, so now we just need to plug it in.

π8² = 201.06

or you can do

3.14(8²) = 200.96

Using π just makes it more exact.

Answer:

201.1 in (approx.)

Explanation:

ok x so first I will multiply 8^2 by pi, that gives me an infinite decimal.. but after rounding it up to 1d.p, we get 201.1 inches which is your answer

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