Answer:
1. The function that gives the lion population size P(t), t years from today is:
P(t) = 325(0.95)^t
2. To find the population in 4 years, we can substitute t=4 in the function:
P(4) = 325(0.95)^4
P(4) = 279.14
So the population will be approximately 279 lions in 4 years.
3. The exponential function for all three years is the same as in part 1:
P(t) = 325(0.95)^t
Study results indicate that the mean length of time people spend on a bus in a city is between 23.4 minutes and 29.5 minutes.
What is the study's margin of error?
6.1 min
4.75 min
3.05 min
0.5 min
Answer:
\(+/-3.05\)
Step-by-step explanation:
The margin of error will be the difference divided by two with a plus and minus sign
So we have;
\(29.5-23.4=6.1\)
Divide by \(2\)
\(6.1\) ÷ \(2=3.05\)
\(=3.05\)
Therefore, The margin error is therefore
\(+/-3.05\)
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Let μ denote the true average radioactivity level(picocuries per liter). The value 5 pCi/L is considered thedividing line between safe and unsafe water. Would you recommend testing H0: μ = 5 vs Ha: μ > 5 or H0: μ =5 vs Ha: μ < 5?
Answer:
H0: μ = 5 versus Ha: μ < 5.
Step-by-step explanation:
Given:
μ = true average radioactivity level(picocuries per liter)
5 pCi/L = dividing line between safe and unsafe water
The recommended test here is to test the null hypothesis, H0: μ = 5 against the alternative hypothesis Ha: μ < 5.
A type I error, is an error where the null hypothesis, H0 is rejected when it is true.
We know type I error can be controlled, so safer option which is to test H0: μ = 5 vs Ha: μ < 5 is recommended.
Here, a type I error involves declaring the water is safe when it is not safe. A test which ensures that this error is highly unlikely is desirable because this is a very serious error. We prefer that the most serious error be a type I error because it can be explicitly controlled.
Which of the following questions about a particular animal could NOT be answered using only the data collected for the tracking collars?
The question about a particular animal that could NOT be answered using only the data collected from the tracking collars would be do the movement patterns of the animal vary according to the weather? That is option C.
What are tracking collars?A tracking collars is a neck device that usually has a GPS device attached to it which is used by biologists to track the movement of animals that are under study.
The functions of the tracking collars include the following:
It allows them to note how many miles the animal can travel in a given time.It allows them to note the pattern of movement of the animals.It allows them to note the location preferred by the animal to travel.Learn more about tracking here:
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Complete question:
Biologists often attach tracking collars to wild animals. For each animal, the following geolocation data is collected at frequent intervals.
The time
The date
The location of the animal
Which of the following questions about a particular animal could NOT be answered using only the data collected from the tracking collars?
A. Approximately how many miles did the animal travel in one week?
B. Does the animal travel in groups with other tracked animals?
C. Do the movement patterns of the animal vary according to the weather?
D. In what geographic locations does the animal typically travel?
C. Do the movement patterns of the animal vary according to the weather?
will mark brainleist pls help
Answer:
x = 31°
Step-by-step explanation:
the sum of the 3 angles in a triangle = 180° , that is
x + 54° + 95° = 180°
x + 149° = 180° ( subtract 149° from both sides )
x = 31°
Which interval notation represents a function with a domain of all real numbers greater than or equal to -2 and less than 4?A.) -2
The domain are the values of x, and if x has to be greater than -2 and less than 4. we get
\(-2\leq x<4\)What is the range of the function shown on the graph
Answer:
-2<=y<=-7
Step-by-step explanation:
Please anyone help me with this ?!!! Thank you:))!!
The solution is, he had 68 marvels.
What is addition?
Addition is a way of combining things and counting them together as one large group. ... Addition in math is a process of combining two or more numbers.
here, we have,
given that,
he added 36 marvels, now, he has 104 in total,
we have to find that, how many he had.
let, he had = x
so, we know, added = 36
i.e. now total is = x+36
ATQ, we get,
x+36 = 104
or, x = 104 - 36
or, x = 68
Hence, The solution is, he had 68 marvels.
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Mark rows a boat 8 miles an hour in calm water. When the rate of a river's current is 3 mph, it takes Mark 2 hours longer to row a given distance upstream than to travel the same distance downstream. How long will it take him to row downstream? How many miles will he row in total? Time: Distance:
Answer:
utprirtdufyfohxhcf2667566596 y _&÷&8€5697= 34 minutos y el no te
Find the 12 th term of an A.P 16, 11, 6, 1,...........
Answer:
→ 12th term of the given AP is -39.
Step-by-step explanation:
Given AP is 16,11,6,1
First term = 16
Common difference =11-16 = -5
We know that
nth term of an AP = an = a+(n-1)d
Now,
12 th term = a12
⇛a12 = a+(12-1)d
⇛a12 = a+11d
⇛a12 = 16+11(-5)
⇛a12 = 16+(-55)
⇛a12 = 16-55
⇛a12 = -39
12th term of the given AP = -39
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A certain drug is made from only two ingredients: compound A and compound B. There are 3 milliliters of compound A used for every 5 milliliters of compound
B. If a chemist wants to make 728 milliliters of the drug, how many milliliters of compound A are needed?
? milliliters of compound A
In order to create 728 millilitres of the medication, 273 millilitres of component A are required.
What do you mean by compound?A compound in chemistry is a material comprised of two or more separate chemical elements mixed together in a certain proportion. Chemical connections that are challenging to break are created when the elements interact with one another.
Compound A:Compound B ratio in the medication is 3:5. In other words, there are 3 millilitres of compound A and 5 millilitres of compound B for every 3+5=8 millilitres of the medicine.
We may set up a percentage using the ratio of compound A to the total volume of the medicine to determine how much compound A is required to make 728 millilitres of the drug:
3 ml x 3 ml x 3 ml
-------- = ----------
728 ml total, 8 ml overall
If we cross-multiply, we obtain:
8(x) = 3(728)
To find x, we use the formula x = 3(728)/8 = 273
In order to create 728 millilitres of the medication, 273 millilitres of component A are required.
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273 milliliters of compound A are needed to make 728 milliliters of the drug.
What are proportions?
In mathematics, a proportion is a statement that two ratios are equal. It expresses the relationship between two or more quantities that are directly proportional to each other. A proportion can be represented as an equation of the form:
a/b = c/d
To determine the amount of compound A needed to make 728 milliliters of the drug, we need to use the given ratio of 3 milliliters of compound A to 5 milliliters of compound B.
Let's start by finding the ratio of compound A to the total amount of ingredients (A+B) in the drug:
3 : (3+5) or 3:8
This means that for every 8 milliliters of the drug, 3 milliliters of compound A are used.
To find out how many milliliters of compound A are needed for 728 milliliters of the drug, we can set up a proportion:
3/8 = x/728
where x represents the amount of compound A needed.
To solve for x, we can cross-multiply:
8x = 3*728
8x = 2184
x = 273
Therefore, 273 milliliters of compound A are needed to make 728 milliliters of the drug.
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Leila pumped 2 gallons of water into her pool each minute for 8 minutes. What was the total
change in the amount of water in the pool?
Answer:
16 gallons
Step-by-step explanation:
If she pumped 2 gallons per min, for 8 mins. you would do 8x2=16 let me know if it was helpful
What’s the answer I need help with this last problem
Answer:
Hope the picture will help you
QUESTION 6 1 POINT
Determine whether the graph shown is the graph of a function.
Select the correct answer below:
The graph does not represent a function, because is is possible to draw a vertical line that intersects the graph more than once.
What is graph?An infinite number of nodes or vertices and the connecting edges make up a graph, which is a type of non-linear data structure. When dealing with real-world issues, graphs in data structures are used because they model the issue as a network, similar to social networks, telephone networks, and circuit networks.
In a telephone network, for instance, it might depict a single user as nodes or vertices, with the telephone line connecting them as edges.
The non-linear type of data structure known as a graph is composed of nodes, also known as vertices and edges. In a graph, the nodes, which are also referred to as vertices, are connected by edges.
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PLZ HELP MEEE EASY POINTS I WILL GIVE BRAINLIEST
Which characteristics will prove that ΔDEF is a right, isosceles triangle?
segment DE is larger than segment EF, and their slopes are the same.
segment DE is larger than segment EF, and their slopes are opposite reciprocals.
The lengths of segment DE and segment EF are congruent, and their slopes are the same.
The lengths of segment DE and segment EF are congruent, and their slopes are opposite reciprocals.
Answer:
Its The lengths of segment DE and segment EF are congruent, and their slopes are opposite reciprocals.
Step-by-step explanation:
I took the test
The characteristics should be that The lengths of segment DE and segment EF are congruent, and their slopes are opposite reciprocals.
What is the right isosceles triangle?An Isosceles Right Triangle refer to a right triangle that comprise of two equal length legs.
Also, the two legs of the right triangle should be equivalent in length, the corresponding angles should also be considered as the congruent.
Hence, the last option is correct.
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9322 x 10 multiply by 10s I need done ASAP
Answer: 93,220
Step-by-step explanation: Just add a zero to the end to get 93,220.
Answer: 93,220 I hope it was quick enough
Step-by-step explanation:
4. In SI, motor output is rated in
A. horsepower.
B. newtons.
C.foot-pounds per second.
D. kilowatts.
Answer:
in so in Newton motor out put is rate
Which statement best describes a strategy for estimating the perimeter of the figure below if the grid squares have
side lengths 1 cm?
Add the lengths of the horizontal and vertical segments, and then subtract 5 because the diagonal side is 4 units
wide and 2 units tall.
O Add the lengths of the horizontal and vertical segments, and then subtract 3 because the diagonal side is 4 units
wide but only 2 units tall.
O Add the lengths of the horizontal and vertical segments, and then add 3 because the diagonal side is 4 units wide
but only 2 units tall.
O Add the lengths of the horizontal and vertical segments, and then add 5 because the diagonal side is 4 units wide
and 2 units tall.
The best statement that describes the strategy for estimating the perimeter of the figure (please see the attached diagram) is the option;
Ad the lengths of the horizontal and vertical segments, and then add 5 because the diagonal side is 4 units wide and 2 units tall
What is an estimate of an amount?An estimate is an approximation of a true value, which is a value that is close to the actual value of the measured quantity.
Please find attached a diagram of the possible figure created with MS Word
The length of the side of the sides of the possible figure in the figure, obtained from a similar question on the internet are;
Base length = 5 units
Height = 4 units
The figure has a diagonal side which is 4 units wide and 2 units tall.
The length of the slant side, found using Pythagorean theorem can be obtained as follows; Length = √(4² + 2²) = 2·√5 ≈ 5
The correct option is therefore to add the lengths of the horizontal and vertical segments, and then add 5 because the diagonal side is 4 units wide and 2 units tall
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If a=12, b= -14 and c= -20 then find -b+c
Answer:
-6
Step-by-step explanation:
-b + c
-(-14) + (-20)
14 – 20
= –6
Answer:
-6
Step-by-step explanation:
-(-14) + (-20)
14 + (-20)
= -6
please help with this problem.no explanation needed, I am just looking for an answer
we have that
the answer is BreakfastOrder the lengths of the sides in the given figure from least to greatest.
AC, AB, BC
BC, AB, AC
AC, BC, AB
AB, AC, BC
Answer:
AC,BC,AB
Step-by-step explanation:
CORRECT ME IF ME WRONG
Use either Gaussian elimination or Gauss-Jordan elimination to solve the given system or show that no solution exists. (If there is no solution, enter NO SOLUTION. If the system has an infinite number of solutions, use t for the parameter.) x1 + x2 + x3 = 0 x1 + x2 + 9x3 = 0
Answer:
x1 = t, x2 = -t and x3 = 0
Step-by-step explanation:
Given the system of equation
x1 + x2 + x3 = 0 .... 1
x1 + x2 + 9x3 = 0 .... 2
Subtract both equation
x3 - 9x3 = 0
-8x3 = 0
x3 = 0
Substitute x3 = 0 into equation 1
x1 + x2 + 0 = 0
x1+x2 = 0
x1 = -x2
Let t = x1
t = -x2
x2 = -t
Hence x1 = t, x2 = -t and x3 = 0
A certain disease has an incidence rate of 0.3%. If the false negative rate is 6% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the disease.
The probability that a person who tests positive actually has the disease is 0.006%
How to determine the probability?From the question, we have the following parameters that can be used in our computation:
Incidence rate = 0.3%False negative rate = 6%False positive rate = 2%The probability that a person who tests positive actually has the disease is represented as
Probability = Incidence rate * False positive rate
Substitute the known values in the above equation, so, we have the following representation
Probability = 0.3% * 2%
Evaluate the products
Probability = 0.006%
Hence, the probability is 0.006%
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In a previous poll, 28% of adults with children under the age of 18 reported that their family ate dinner together seven nights a week. Suppose that, in a more recent poll, 291 of 1122 adults with childron under the age of 18 reported that their family ate dinner together seven nights a week. Is there sufficient evidence that the proportion of families with children under the age of 18 who eat dinner together seven nights a week has decreased? Use the a 0.1 signiflicance level. Because npo (1- Po) 226 2> 10 and the sample size is less than 5% of the population size, and the sample %3D can be reasonably assumed to be random, the requirements for testing the hypothesis paysges (papaou se 0oejd jeupop auo oi puno) What are the null and altemative hypotheses?
There is insufficient evidence to say that the population proportion has decreased from 28%.
"Information available from the question"
In the question:
The significance level, α =.01
The sample size, n = 1122
The number of success, x = 291
What are the null and alternative hypotheses?
Now, According to the question;
Let's know:
Significance Level:
The significance level is the area of the rejection region in the hypothesis test. The larger the significance level, the easier is to reject the null hypothesis. The most common significance level used is 5% but in cases where high precision is required significance level is reduced.
\(H_0\) : p \(\geq\) 0.28
\(H_\alpha\) : p < 0.28
The significance level, α =.01
The sample size, n = 1122
The number of success, x = 291
So,
The sample proportion:
p(cap) = x/ n
= 291/1122
= 0.2594
Test Statistics:
z = \(\frac{p_c_a_p - p }{\sqrt{p\frac{(1-p)}{n} } }\)
z = \(\frac{0.2594 - 0.28}{\sqrt{0.28\frac{(1-0.28)}{1122} } }\)
z = -0.0206/0.0003396
z = -0.2591
Decision rule:
Reject the null if,
p- value \(\leq\) \(\alpha\)
We can use a z-distribution table, an online tool, or the following excel command to calculate the p-value using excel.
p - value = P(z < -0.2591)
= 0.79635
p - value ≈ 0.79635 > \(\alpha\) = 0.01
Fail to reject the null.
Conclusion:
There is insufficient evidence to say that the population proportion has decreased from 28%.
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PLZ HELP!!!!
Which group of numbers is in order from smallest to largest?
• 0.34, 45%, 13/25
• 27%, 3/4, 0.09
• 9/10, 0.8, 75%
• 0.24, 37%, 3/10
I will give you brainliest for correct answer... no scams though ! PLZ :(
Answer:
1)
Step-by-step explanation:
1 is the answer
I believe
Answer:
.34, 45, 13/25 im pretty sure
Step-by-step explanation:
If 1+1 = x - 7
What is the value of X?
Answer:
1 cause its going to be one sometimes
Answer:
x = 9
Step-by-step explanation:
1+1 = x - 7
2 = x - 7
Add 7 to both sides to isolate the x:
2 + 7 = x - 7 + 7
9 = x
Hope this helps!
Write the expression for the following statement without
any spaces:
the sum of 64y and 3, cubed can be expressed as
The expression of the statement that is given above can be written as follows: 262144y³ + 27.
How to determine a way to express the given statement?To determine how to express the given statement the following should be carried out.
When a number is said to be cubed, it means that the number should be times by itself three consecutive times.
That is (64y + 3)³. This means that various components should be multiplied by itself three times. That is,
= 64×64×64(y)³ + 3×3×3
= 262144y³ + 27.
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The local swim team is considering offering a new semi-private class aimed at entry-level swimmers, but needs at minimum number of swimmers to sign up in order to be cost effective. Last year's data showed that during 8 swim sessions the average number of entry-level swimmers attending was 15. Suppose the instructor wants to conduct a hypothesis test. The alternative hypothesis for this hypothesis test is: "the population mean is less than 15". The sample size is 8, LaTeX: \sigmaσ is known, and alpha =.05, the critical value of z is _______. Group of answer choices
Answer:
The signficance level is 0.05 and then based in the alternative hypothesis we can find a critical value who accumulates 0.05 of the area in the normal standard curve in the left and we got:
\( z_{\alpha/2}= -1.64\)
Step-by-step explanation:
\(n=8\) the same size given
[te]\sigma\) the population deviation is known
For this case we want to test if the population mean is less than 15 and that represent the alternative hypothesis and the complement would be the null hypothesis. So then the system of hypothesis are:
Null hypothesis: \(\mu \geq 15\)
Alternative hypothesis: \(\mu <15\)
The signficance level is 0.05 and then based in the alternative hypothesis we can find a critical value who accumulates 0.05 of the area in the normal standard curve in the left and we got:
\( z_{\alpha/2}= -1.64\)
Unit 1 - Part 1 - Test ReviewWriting and Modeling with Equations1) A store sells ice cream with assorted toppings. They charge $3.00 for an ice cream, plus 50cents per ounce of toppings.a) Write an equation the represent the total cost (C) of an ice cream base on the ounce oftoppings (t).b) Use the equation to determine how much Evan's ice cream would cost with 3 ouncesof toppings.
Explanation:
a) Cost of ice cream = $3
Total charge of ice cream with toppings = $3 + 50 cent (per toppings)
50 cent = $0.50
let the number of toppings = t
And the total cost = C
C = $3 + $0.5(t)
The equation that represent the total cost (C) of an ice cream base on the ounce of
toppings (t):
C = 3 + 0.5(t)
b) 3 ounces of toppings: t = 3
(Blank) x 1/6 = 5/6
I haven’t done this in a while so I need help.
Answer:
5
Step-by-step explanation:
Divide 5/6 by 1/6 to get 5 as your answer.
Find the missing side or angle.
Round to the nearest tenth.
A=98°
b=11
c=19
a=[?]
Answer:
your answer will be a= 23.2
Step-by-step explanation:
hope this helps u have a great day ^_^
Answer:
A= 23.2
Step-by-step explanation:
\(a^2=b^2+c^2-2bc CosA\)
\(a^2=11^2+19^2-2(11)(19)Cos 98\)
\(a^2=121+361-418cos98\)
\(a^2=121+361-(-58.17)\)
\(\sqrt{a^2} =\sqrt{540.17}\)
\(a=23.2\)
\(-----------\)
hope it helps..
have a great day!!