The density of the squirrel population in the woods during that period was approximately 0.55 squirrels per hectare.
To calculate the density of the squirrel population in the woods, we need to determine the number of squirrels per unit area.
Given:
October 15, 2012: 75 squirrels in a 30-hectare woods.
December 15, 2012: 42 squirrels in the same woods.
First, let's find the change in the number of squirrels over the two-month period:
Change in squirrel count = Initial count - Final count
= 75 - 42
= 33 squirrels
Next, let's calculate the change in time:
Change in time = December 15, 2012 - October 15, 2012
= 2 months
Now, we can calculate the rate of change in the number of squirrels per month:
Rate of change = Change in squirrel count / Change in time
= 33 squirrels / 2 months
= 16.5 squirrels per month
Finally, we can calculate the density of the squirrel population by dividing the rate of change in the number of squirrels by the area:
Density = Rate of change / Area
= 16.5 squirrels per month / 30 hectares
≈ 0.55 squirrels per hectare
Therefore, the density of the squirrel population in the woods during that period was approximately 0.55 squirrels per hectare.
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A bicycle manufacturer is studying the reliability of one of its models. The study finds that the probability of a brake defect is 4 percent and the probability of both a brake defect and a chain defect is 1 percent. If the probability of a defect with the brakes or the chain is 6 percent, what is the probability of a chain defect? 1. 5 percent 2 percent 2. 5 percent 3 percent.
The bicycle manufacturer is studying the reliability of its models and analyzing the probability of defects. They found the probability of a brake defect is 4 percent and the probability of both brake and chain defects is 1 percent.
Given that the probability of a defect with brakes or chain is 6 percent, we can find the probability of a chain defect using the formula: P(A and B) = P(A|B) * P(B), where P(A and B) is the probability of both events A and B occurring, P(A|B) is the probability of event A occurring given that event B has occurred, and P(B) is the probability of event B occurring.
In this case, we want to find the probability of a chain defect given that there is a defect with either the brakes or the chain. Let's use the events: A = brake defect, B = chain defect, From the problem statement, we know that: P(A) = 0.04 (probability of a brake defect), P(A and B) = 0.01 (probability of both a brake defect and a chain defect)
P(A or B) = 0.06 (probability of a defect with the brakes or the chain).
To find P(B|A or B), we can use the formula: P(B|A or B) = P(A and B) / P(A or B) = 0.01 / 0.06, = 1/6, = 0.1667, So the probability of a chain defect given that there is a defect with either the brakes or the chain is 16.67%, or approximately 2/12 or 1/6.
Therefore, the correct answer is option 2: 2%, Solving for the probability of a chain defect, we get: P(chain defect) = 0.06 - 0.04 + 0.01 = 0.03, So, the probability of a chain defect is 3 percent.
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Cherries cost 4 dollars per pound.my mother r lb of cherries and my father bought 2 lb of cherries.how much more money did my mother spent on cherries than my father
Mother spent (4r - 8) dollars more on cherries than did the father.
An expression using numbers and related operations is called a numerical expression.
According to the question, a pound of cherries costs $4.
Mom purchased r pounds.
The price of the cherry is calculated as follows: 4r = weight x $/lb.
Father purchased 2 pounds, thus the price of the cherries is 4 (2), or $8.
We remove the smaller value from the higher value, which is 4r - 8, where r must be more than two. Given that the mother spent more money on cherries than the father, the mother's cost of cherries is a greater value.
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3. Which of the following statements are correct? Please provide the reasons of your choice. (5 points) a) Only crystalline polymers have Tg. b) The addition of plasticizer increases the Tg of base polymer. c) Disposable bottles made of PET often shrink when filled with hot water. This is because the Tm of PET is below 100°C. d) For a given polymer, Tm is always higher than Tg.
The correct statements are
b) The addition of plasticizer increases the Tg of base polymer
d) For a given polymer, Tm is always higher than Tg.
* **(a)** is incorrect because both crystalline and amorphous polymers have Tg. Tg is the glass transition temperature, which is the temperature at which a polymer transitions from a glassy state to a rubbery state. Crystalline polymers have a higher Tg than amorphous polymers because the crystalline regions are more rigid.
* **(b)** is correct because plasticizers are molecules that disrupt the intermolecular forces in a polymer, making it more flexible. This means that the Tg of the polymer will be increased.
* **(c)** is incorrect because the Tm of PET is 245°C, which is above 100°C. PET bottles shrink when filled with hot water because the hot water causes the polymer chains to become more flexible and move more freely. This results in a decrease in the volume of the bottle.
* **(d)** is correct because Tg is the temperature at which the polymer chains are able to move freely, while Tm is the temperature at which the polymer chains are able to break free from each other and flow. Therefore, Tm must always be higher than Tg.
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Felix's dinner costs $16.49. Felix pays a $20 bill. About how much change did he receive? Show your work.
Answer: He received $3.51 in change.
Step-by-step explanation:
To get the answer we can subtract the amount Felix paid ($20) by the cost of the dinner ($16.49).
It will look like this:
$20.00 - $16.49 = $3.51
Answer:3 dollars and 51 cents
Step-by-step explanation:
Whats 4/5 as a decimal?
hi <3
it would be 0.8
hope this helps :)
The midpoint of the line segment from P4 to P2 is (-5,1). If P1 = (-7,9), what is P2?
Let A(2,0),B(0,92)
Let A(2,0),B(0,92)and let mid-point be C(1,3p)
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)Putting (−1,1) in line
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)Putting (−1,1) in line5x+3y+2=0
Let A(2,0),B(0,92)and let mid-point be C(1,3p)Finding coordinates of C(1,3p)=⎝⎜⎜⎛22+0,20+92⎠⎟⎟⎞⇒(1,3p)=(1,91)Comparing y-coordinate3p=91∴p=31We need to show that line 5x+3y+2=0 passes through point (−1,3p)Point =(−1,3p)=(−1,3×31)=(−1,1)Putting (−1,1) in line5x+3y+2=0⇒5(−1)+3(1)+2=0
What is the product of 6 and 7 square root 128 in simplest radical form
Answer:
336√2Step-by-step explanation:
For a radical to be in the simplest form, it means it has been simplified in such away that there are no more square root, cube roots, 4th root, etc left to be found.product of 6 and 7= 6×7= 42
product of 6 and 7 square root 128= 42✓128
42✓128= 42✓64×2= 42×8✓2
42×8√2 = 336√2
therefore, the product of 6 and 7 square root 128 in simplest radical form is 336✓2
What is 965.000.000,000,000 in scientific notation?
The Scientific notation for above value is :
\( \boxed{ \boxed{9.65\times 10 {}^{14} }}\)
t 9
y (5)
−t 3
y ′′
+6y=0 (a) The order of this differential equation is (b) The equation is Note: In order to gϵ oblem all answers must be correct.
To write the equation in proper form, we can divide the entire equation by \(t^9\):
\[y^{(5)} - \frac{t^{-6}}{t^{-12}}y'' + 6t^{-9}y = 0\]
Simplifying further, we can multiply the equation by \(t^{12}\):
\[t^{12}y^{(5)} - t^3y'' + 6y = 0\]
Therefore, the given differential equation is:
\[t^{12}y^{(5)} - t^3y'' + 6y = 0\]
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Find the degree of the term.
Answer:
Here,
-2xy³
The exponent of x = 1
The exponent of y = 3
Thus, the degree of the term = 1+3 = 4
Step-by-step explanation:
Given the term
-2xy³
We know that the degree of the term involving xy expression cab be calculated by adding the exponents of x and y.
In other words, the degree of a term in two variables would be the sum of the exponents of the variables in the termHere,
-2xy³
The exponent of x = 1
The exponent of y = 3
Thus, the degree of the term = 1+3 = 4
a ball is shot out of a homemade air cannon. It flies through the air such that its height, as a function of time, is given by: h= -16t^2 + 64t + 10. where h is the height of the ball in feet and t is the time since it was fired in seconds. Max estimates that it takes 4 seconds for the ball to hit the ground and Cole estimates it takes 5 second. Algebraically determine who is closer and support your answer.
Answer:
Max
Step-by-step explanation:
the function given that h = -16t³+64t+10
the general function Equation:
h = at²+bt+c
=> t at the highest point is defined by t = -b/2a
= -64/2(-16) = -64/-32 = 2 second
the total times that the ball hits the ground
= 2× 2 seconds = 4 seconds.
so, Max is right
Answer:
Solution given:
Let h=0=when the ball hit the ground,the height=0.
h= -16t^2 + 64t + 10.
0=16t²-64t-10
8t²-32t-5=0
∆=\( \frac{32±\sqrt{32²+4*5*8}}{2*8}=\frac{8±\sqrt{74}}{4}\)
taking positive
t1=\( \frac{8+\sqrt{74}}{4}=4.15seconds\)
t2=\( \frac{8-\sqrt{74}}{4}(t2<O)(neglected)\)
So
t=4.15seconds closer to 4seconds.So
Max is closer.
A golf ball is hit so that it travels a horizontal distance of 400 feet and reaches a
maximum height of 190 feet.
Determine a quadratic equation that models the path of the golf ball, assuming it starts at the origin.
Considering the vertex, the quadratic equation that models the path of the golf ball is given by:
y = -0.0011875(x - 400)² + 190
What is the equation of a parabola given it’s vertex?The equation of a quadratic function, of vertex (h,k), is given by:
y = a(x - h)² + k
In which a is the leading coefficient.
In this problem, the vertex is at the maximum height of the parabola, given by (400, 190), hence h = 400, k = 190, and:
y = a(x - 400)² + 190
It starts at the origin, that is, when x = 0, y = 0, hence:
0 = 400²a + 190
a = -190/400²
a = -0.0011875.
Hence, the equation is:
y = -0.0011875(x - 400)² + 190
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What is the solution to 3x – 3 = -12?
Answer:
3x - 3 = -12
X = -3
-3 x 3 = -9
-9 - 3 = -12
Hope this helps
Answer:
x=-3
Step-by-step explanation:
\(3x - 3 = - 12 \\ 3x = - 12 + 3 \\ 3x = - 9 \\ x = \frac{ - 9}{3} \\ x = - 3\)
can you Just pls Tell me the answer
Answer:
1. Equation is x - 5 = 8
x = 13
2. Equation is 4x - 4 = 10
x = 3.5
3. Equation is x/4 = 8
x = 32
4. Equation is 5x = 10
x = 2
5. Equation is x - 5 / 2 = 14
x = 33
6. Equation is 4x / 5 = 10
x = 12.5
7. Equation is 2x - 10 = 8
x = 9
8. Equation is 3x + 6 / 3 = 10
x = 8
9. Equation x + 8 / 4 = 14
x = 48
Graph each line using intercepts 12x -3y=-6
Step 1: Problem
Graph 12x - 3y = -6
Step 2: Concept and Method
When x = 0
12(0) - 3y = -6
-3y = -6
y = -6/-2
y = 2
when y = 0
12x - 3(0) = -6
12x = -6
x = -6/12
x = -0.5
taking a big argument and dividing it into smaller easier components to solve is known as what?
The process of breaking down a complex argument or problem into smaller, more manageable components is known as "analysis" or "analytical reasoning."
This approach allows us to examine the various parts of a complex issue individually, facilitating a deeper understanding and easier solution finding.
Analytical reasoning involves dissecting a problem or argument into its constituent elements, identifying relationships between them, and evaluating their individual roles and contributions. By breaking down the problem, we can focus on each component separately, which can lead to clearer insights and more effective problem-solving strategies.
This method of analysis is commonly used across various disciplines, including mathematics, science, philosophy, and critical thinking. It helps us understand complex phenomena, solve intricate equations, and make informed decisions based on careful examination.
The benefits of breaking down a big argument or problem into smaller components are manifold. It helps to identify patterns, uncover hidden relationships, and clarify any ambiguities or misconceptions. By addressing each component individually, we can apply specific strategies or methods that are relevant to that particular element, making the problem more approachable and manageable.
Overall, The process of breaking down a complex argument or problem into smaller, more manageable components is known as "analysis" or "analytical reasoning." It enables us to grasp intricate concepts, develop logical reasoning, and arrive at well-structured and comprehensive solutions.
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Worth 50 points and brainliest for anyone who answer this correctly(with solution ofc)
MEAN: =29.42
THE MEDIAN:
\((29 + 36) \times \frac{1}{2} = 32.5\)
that's my answer hope it helps
Answer:
46878954575
Step-by-step explanation:
6. Mackenzie ran a half marathon (13 miles) in 1 hour and 57 minutes. She kept up a pace of 8 minutes per
mile for the first 7 miles. Then the course got hilly, so for the next 4 miles, she ran 11 minutes per mile. If she
finished up the course at a consistent pace, what was her rate for each of the last miles?
hich of the following characteristics of stars has the greatest range in values? A) mass. B) radius. C) core temperature. D) surface temperature.
Of the mentioned characteristics, that with the greatest range of values is Mass.
The mass of a star can range from about 0.08 solar masses to over 100 solar masses. This is a very wide range, and it is much wider than the ranges for radius, core temperature, or surface temperature.
The radius of a star is typically about 1-10 times the radius of the Sun. The core temperature of a star is typically about 10-100 million degrees Kelvin. The surface temperature of a star is typically about 2,000-30,000 degrees Kelvin.
Therefore, the mass of a star has the greatest range in values.
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Which is equivalent to log Subscript 2 Baseline n = 4?
log n = StartFraction log 2 Over 4 EndFraction
n = StartFraction log 2 Over log 4 EndFraction
n = log 4 times log 2
log n = 4 log 2
Answer: log n = 4log2
Step-by-step explanation:
The 4th option is correct. The expression \(\log n=4(\log 2)\) is equivalent to the given expression.
Important information:
The given expression is \(\log_2 n=4\).We need to find the equivalent equation.
Logarithms:Using the property of logarithm, the given expression can be written as:
\(\dfrac{\log n}{\log 2}=4\) \(\left[\because \log_ab=\dfrac{\log b}{\log a}\right]\)
\(\log n=4(\log 2)\)
Thus, the 4th option is correct.
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What is the value of x
Given,x-1/3=k
or, x-1=3*k (k=3)
or, x-1=3*3
or, x=9+1
Therefore, x=10
How do you solve b^2=-3b
Answer:
b=0,-3
Step-by-step explanation:
b^2+3b=0
b(b+3)=0
b=0
b+3=0
b=-3
Answer:
b = 0 OR b = -3
Step-by-step explanation:
To start off with, we know that this must be a quadratic equation because there's a "^2".
Firstly, we have to bring everything over to one side of the equation. This means we have to add 3b to both sides, as we want the right-hand side to be 0.
b^2 = -3b
+3b +3b
b^2 + 3b = 0
Secondly, we have to factorise. We need to see what number goes into both "b^2" AND "3b".
That is "b".
b^2 + 3b = 0
factor out b
b(b + 3) = 0
Thirdly, we have to use the Null Factor Law to find out what b equals. The Null Factor Law states that if an equation equals 0, then one of the terms must either be 0, or the negative of the other number.
Hence, there are two answers.
b = 0
OR
b = -3
what does 1/4 divided by 1/10 equal
Answer: 2/5
Step-by-step explanation: hope it helps
find the area of a regular octagon with a perimeter of 80 ft and an apothem of 12.07 feet
Answer:
The area of a regular octagon with a perimeter of 80 ft and an apothem of 12.07 feet is 482.8 ft².
Step-by-step explanation:
An octagon is a polygon with eight sides. An octagon is regular (also called a regular octagon) is a polygon with all eight sides equal.
The apothem of a regular octagon is the shortest distance between the center and any of its sides, in other words, it is the distance that separates the center of the polygon from the central point of each side of the octagon.
The area is calculated using the following formula:
\(Area=\frac{n*L*Ap}{2}\)
Where:
n is the number of sides. L is the length of one of the sides. Ap is the value of the apothem.Being n = 8 being an octagon and the perimeter P the sum of the sides of the octagon (P = 8 * L), the area of the regular octagon can be calculated by:
\(Area=\frac{P*Ap}{2}\)
In this case:
P=80 ftAp=12.07 ftReplacing:
\(Area=\frac{80ft*12.07ft}{2}\)
Solving:
Area=482.8 ft²
The area of a regular octagon with a perimeter of 80 ft and an apothem of 12.07 feet is 482.8 ft².
1. (2x+5)+(3x-2)=
2. (3x-2)-(2x+5)=
3. (2x+5)-(3x-2=
Answer:
5x+3x -7-x +7Step-by-step explanation:
Combine like terms. The associative and commutative properties of addition apply, as does the distributive property.
__
1. (2x+5)+(3x-2) = (2x +3x) +(5 -2) = 5x +3
__
2. (3x-2)-(2x+5) = 3x -2 -2x -5 = (3x -2x) +(-2 -5) = x -7
__
3. (2x+5)-(3x-2) = 2x +5 -3x +2 = (2x -3x) +(5 +2) = -x +7
_____
Additional comment
Note that swapping the order of operands in a subtraction problem (problems 2 and 3) will cause the sign of the result to reverse.
Answer:
1. = 5x+3
Step-by-step explanation:
en una tienda de ropa, la semana pasada, 3 pantalones y 2 abrigos costaban 245€. Esta semana estos artículos tienen un descuento del 20% y 5% respectivamente. Si ahora un pantalón y un abrigo cuestan 100,75€, ¿qué costaba cada artículo antes de la rebaja?
Solving a system of equations we can see that each pair of pants costs €82.94 and each coat costs €26.37
How to find the original cost?
Let's define the variables:
x = cost of a pant
y = cost of a coat.
First, we know that:
3x + 2y = 245
And then there are discounts of 20% and 5%, and the cost of one of each is 100.75, then:
0.8x + 0.95y = 100.75
Then we have a system of equations:
3x + 2y = 245
0.8x + 0.95y = 100.75
We can isolate x on the second equation to get:
x = (100.75 - 0.96y)/0.8
x = 125.9 - 1.2y
Replace that in the other equation:
3*(125.9 - 1.2y) + 2y = 245
Solving for y:
3*125.9 - 3*1.2y + 2y = 245
y*(2 - 3*1.2) = 245 - 3*125.9
y = (245 - 3*125.9)/(2 - 3*1.2)
y = 82.94
Then the value of x is:
x = 125.9 - 1.2*82.94
x = 26.37
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how many hundreds are there in 700
Answer: 7 hundreds are in 700
Step-by-step explanation: because if you divide 700 by 100 it equals 7.
Suppose 275 trout are seeded into a lake. Absent constraint their population will grow by 75% a year. If the lake can sustain a maximum of 2700 trout use a logistic growth model to estimate the number of trout after 2 years
Answer: 1729 trout.
Step-by-step explanation:
We can use the logistic growth model to estimate the number of trout after 2 years:
N(t) = K / (1 + (K/N0 - 1) * e^(-rt))
where:
N(t) is the number of trout at time t
K is the carrying capacity of the lake (2700 trout)
N0 is the initial population (275 trout)
r is the growth rate (75% or 0.75, per year)
e is the base of the natural logarithm, approximately equal to 2.71828
To estimate the number of trout after 2 years, we can plug in t = 2 and solve for N(t):
N(2) = 2700 / (1 + (2700/275 - 1) * e^(-0.75*2))
N(2) = 2700 / (1 + 8.8 * e^(-1.5))
N(2) ≈ 1728.7
Therefore, we can estimate that the number of trout after 2 years will be approximately 1729 trout.
In a study, the data you collect is the average weight of newborn babies in ounces.What is the level of measurement?nominalordinalintervalratio
The level of measurement for the data collected in the study (the average weight of newborn babies in ounces) is interval.
\
Interval data is a type of quantitative data, meaning it can be measured numerically and is used when the order or magnitude of the data is important. Unlike ordinal data, the difference between two values is the same regardless of where it falls in the scale.
For example, if two newborn babies weighed 5 and 10 ounces respectively, the difference between the two is 5 ounces. This 5-ounce difference would be the same no matter what order the babies were in. This is an example of interval data.
Another example of interval data would be temperature. When comparing temperatures, the difference between 60 and 70 degrees is the same as the difference between 70 and 80 degrees.
Interval data can be graphed on a line graph. It can also be used in calculations, such as the mean and standard deviation, as the data is numerical and can be averaged.
To summarise, the data collected in the study (the average weight of newborn babies in ounces) is interval data as it is numerical and the difference between two values is the same regardless of where it falls in the scale.
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2) Michael decides to go for a cycle ride. He rides a
distance of 80 km at an average speed of 24 km/h.
Work out how long Michael’s ride takes
Step-by-step explanation:
REMEMBER D/S×T (triangle)
therefore, finding time
D/S
80/24
make sure to press the degrees button on your calculator
3 hours and 20 minutes