Answer:
There will be 361 individuals in 4 years.
Step-by-step explanation:
Exponential equation of population decay:
The amount of individuals of a certain population, after t years, with a decay rate of r(as a decimal), is given by:
[tex]A(t) = A(0)(1-r)^t[/tex]
In which A(0) is the initial population and r is the decay rate.
The population of a certain animal species decreases at a rate of 2.5%.
This means that [tex]r = 0.025[/tex]
There are 400 individuals:
This means that [tex]n = 400[/tex]. So
[tex]A(t) = A(0)(1-r)^t[/tex]
[tex]A(t) = 400(1-0.025)^t[/tex]
[tex]A(t) = 400(0.975)^t[/tex]
How many there will be in 4 years?
This is A(4). So
[tex]A(4) = 400(0.975)^4 = 361.4[/tex]
Rounding to the nearest whole number, there will be 361 individuals in 4 years.
Jasmine gives a film rating of 8/10 which other review agrees with her score
Answer:
2/10 may be the correct awnser
Answer:
4/5
Step-by-step explanation:
8/10 = 4/5
In an experiment, the probability that event A occurs is 0.2 and the probability that event B
occurs is 0.5. If A and B are independent events, which statement is true?
A.
B.
P(A and B) = 0.1
P(A or B) = 0.1
P(A and B) = 0.7
P(A or B) = 0.7
C.
D.
Answer:
Step-by-step explanation:
P(A and B) = 0.1
If ADEF is reflected over the x-axis, what would be the coordinates of point F?
Answer:
A) (-2,-1)
Step-by-step explanation:
It would be in Quadrant III, so (-2,-1)
The circumference of a circle is about 33.912 inches. The circle's radius is __ inches.
Use 3.14 for π.
Answer:
5.4
Step-by-step explanation:
Circumference = 2 x 3.14 x radius
To find this information, you must first divide:
33.912 ÷ 2 = 16.956
Then, divide:
16.956 ÷ 3.14 = 5.4
So then your answer is:
Radius = 5.4
Hope this helps you out! : )
needhelpslovingthisproblem
Answer:
-4 to -1.5
Step-by-step explanation:
When the graph start to slope downwards or go down its decreasing. So when the hump starts to go down at (-4,0) it then starts to go up again after (-1.5,0). Hope this helps:)
Point P is located on the segment between point A (1,4) and point D (7,13). The distance from A to P is twice the distance from
Pto D. What are the coordinates of point P?
Answer: Point P is at (3, 7)
Step-by-step explanation: the distance from point a to point B is 10.8. 10.8 divided by 3 is 3.6, so you have to find a point that 3.6 from point a. Using a graph, I found the answer to be (3,7)
Which expression is equivalent to this quotient?
4x^2 -8x -5/ 4x^2 - 25
A. -1/5
B. 2x - 1/ 2x - 5
C. 2x + 1/ 2x + 5
D. 2x - 5/ 2x + 5
The answer is (C) 2x+1/ 2x+5.
This is just finding like terms.
Like terms are terms that are the same, like 2x and 3x for example, would be like terms. (This is not in the problem by the way.) Just divide the like terms, and that's your answer.
I tried to give a good explanation but I'm super tired. Just trying to help.
The expression is equivalent to the quotient is (2x+1)/(2x+5). Therefore, option C is the correct answer.
What is an equivalent expression?Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.
Given that, (4x²-8x-5)/(4x²-25)
= (4x²-10x+2x-5)/((2x)²-(5)²)
= [2x(2x-5)+1(2x-5)]/(2x-5)(2x+5)
= [(2x-5)(2x+1)]/(2x-5)(2x+5)
= (2x+1)/(2x+5)
Therefore, option C is the correct answer.
To learn more about an equivalent expression visit:
https://brainly.com/question/28170201.
#SPJ2
PLEASE HELP ILL GIVE BRAINLIEST !!! 100 POINTS !! NO FAKE ANSWERS !
Answer:
20
Step-by-step explanation:
complex conjugate of 10+5i = 10-5i
10+5i + 10-5i = 20
What is the sum of degrees of each vertex for a tree with 6 vertices?
a) 5
b) 6
c) 8
d) 10
Answer:
C: Is the Answer
Step-by-step explanation:
Really hope it'll help!!
please tell me that *FIND THE SQAURE ROOT OF 1054729 BY DIVISION METHOD*.
Answer:*FIND THE SQAURE ROOT OF 1054729 BY DIVISION METHOD*.
Step-by-step explanation:
what? you said to tell you that
Help what I don’t know what is 1 + 2
Answer:
answer: 1 + 2 = 3
answer: 1 + 2 = 3
Answer:
1+2=3
Step-by-step explanation:
it math
Select the correct answer.
if f(t) = 2 - 4 and 9 (7)
= 2 – xż and g(x) = x2 – 9, what is the domain of g(x) = f(x)?
OA. (-0, 2] and [2, 0)
OB. [0, 4) and (4, )
Oc. (-0, 2] and [4, 0)
D. (-0, -2] and [2, )
Answer:
Option B will be your answe
Step-by-step explanation:
hope it helps....
Find the area of the figure
Answer:
89 sq meters
Step-by-step explanation:
The whole rectangle 13x8 = 104
Now subtract the white triangle
(6x5)/2 = 15
104-15 = 89
Antonio watches a movie that is 1 hour and 45 minutes long. Which number line could show when Antonio watches the movie?
Answer:
1st one
Step-by-step explanation:
Answer:
Bottom left
Step-by-step explanation:
Those I-ready diagnostics suck don't they?
The probability of the car having 4 doors is 1/2
What does that mean?
(A)It is neither unlikely nor likely
(B)It is likely
(C)It is impossible.
(D)It is definite.
Answer:
(A)It is neither unlikely nor likely
Step-by-step explanation:
answer is b
hope this helps
A 10-pound block of ice melts at a rate of 3% per hour. Find the weight of the block of ice after 1 day.
Answer:
The weight of the block of ice after 1 day is of 4.81 pounds.
Step-by-step explanation:
Equation for exponential decay:
The equation that models an amount after t hours, subject to exponential decay, is given by:
[tex]A(t) = A(0)(1 - r)^t[/tex]
In which A(0) is the initial amount and r is the decay rate, as a decimal.
A 10-pound block of ice melts at a rate of 3% per hour.
This means that [tex]A(0) = 10, r = 0.03[/tex]
So
[tex]A(t) = A(0)(1 - r)^t[/tex]
[tex]A(t) = 10(1 - 0.03)^t[/tex]
[tex]A(t) = 10(0.97)^t[/tex]
Find the weight of the block of ice after 1 day.
One day has 24 hours, so this is A(24).
[tex]A(24) = 10(0.97)^{24} = 4.81[/tex]
The weight of the block of ice after 1 day is of 4.81 pounds.
during a nature walk jayden identified 20 animals and plants.1/4 of what he identified were animals.how many were animals?
3
Select the correct answer.
Which value is needed to determine a confidence interval for a sample mean?
O A.
the sample proportion
O B.
the standard error of the mean
O C.
the margin of error for the proportion
OD
the population size
Reset
Next
Answer:
A
Step-by-step explanation:
I think I am not sure I just started to do this in school...
What is 12/7 as an mixed number ??
Answer:
1 5/7
Step-by-step explanation:
[tex]1 \frac{5}{7} [/tex]
is the answer if you meant to say mixed fraction
I need help with this math problem
Step-by-step explanation:
Use the following ratio:
[tex] \frac{x}{25} = \frac{6}{10} [/tex]
Answer:
r/25=6/10 thats the answer
Step-by-step explanation:
ez lol yw
Plz, help me this is the photo no link!
Answer:
D.) 0.4m= 8
Step-by-step explanation:
I AsKeD My MaTh tEaChErS FoR uUu :) HaVe a gOoD DaY
HELP! ILL GIVE BRANLIEST :(
Answer:
B
Step-by-step explanation:
since x is GREATER than -25, the shaded part has to be on the right of -25
Answer: B
Step-by-step explanation:
good morning everyone how are you guys
i just want to say today is my science exam
soo if u helped me
that will be nice <3
Answer:
♥Love You♥ DUDE
Step-by-step explanation:
PLEASEEEEEEEEEEEEEEEEEE HELP!!!!!!!!!
Answer:
12 Squared Units
Step-by-step explanation:
Top length: 4 Units
Side length: 3 Units
what is the equivelant fraction for 5/8?
Answer: 40/64
Step-by-step explanation:
᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ᭙ꫝꪗ
Answer:
what do you mean by why?
Step-by-step explanation:
why why why why why??
All of the following are useful in scientific investigations EXCEPT:
O Collection of evidence
Assumptions and bias
0 Creativity and imagination
O Logical reasoning
Answer:
Assumptions and bias
Step-by-step explanation:
Creativity and imagination is also not, but assumptions and bias ruin your investigation.
PEMDAS" notes and Integer rules
*
What is the value of this expression?
(6.3D Lesson 1)
-6. (-2 + 5)
A 42
B -18
с
18
D Not here
Answer:
B
Step-by-step explanation:
Answer:
-18
Step-by-step explanation:
First we start with brackets
(-2+5)= 3
Now
-6×3=-18
What is x? Plz help me this question is worth 13 points.
Answer:
5.25
Step-by-step explanation:
So lets gather our information(Note that I use x as the small x value and X as the larger and missing value)
First off, we know that x is 3.
We know that the X value is a scale of x by 1.75.
We can think of this as 1.75x.
So to find X, we can multiply x by the scale 1.75:
x*1.75=X
plug in the value we know for x:
3*1.75=X
=
5.25=X
So our answer is 5.25!
Hope this helps! :)
does anyone know the answer for this?
Answer:
8 cm
Step-by-step explanation:
The area of the shaded portion is:
[tex]a = \pi \times (( {r1)}^{2} - {(r2}^{2})) [/tex]
A=39π cm^2
r1 is the radius of the large circle
r2=5 cm
So,
[tex]39\pi = \pi \times (( {r1)}^{2} - {5}^{2} ) \\ r1 = 8 \: cm[/tex]