Answer:
Step-by-step explanation:
Volume = l * b *h
1) Volume = 8 * 6 * 3
= 144 ft³
2) Volume = 5 * 2 * 10
= 100 cm³
3) Volume = 7* 4 * 15
= 420 in³
Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 23 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%
No this does not indicate that the population proportion of women athletes who graduate from the university is now less than 67%.
Given long term graduation rate of 67%, sample size of 36 and the women athletes graduated is 23.
We have to find whether the given information shows that the population proportion is less than 67%.
First we have to create hypothesis for this :
\(H_{0}\):P=0.67
\(H_{1}\):P<0.67
Under null hypothesis the test statistic is
z=p bar-p/\(\sqrt{p(1-p)/n}\)
where p bar=23/36
=0.638
z=(0.638-0.67)/\(\sqrt{0.67(1-0.67)/36\)
=-0.032/\(\sqrt{0.67*0.33/36}\)
=-0.032/\(\sqrt{0.0064}\)
=-0.032/0.078
=-0.41
Now we have to find the left tailed critical at 0.01 significance level using z table.
z=-2.33
Since the z value does not fall in the critical region,therefore we fail to reject the null hypothesis. So we can conclude that there is not sufficient evidence to say that the population proportion of women athletes who graduate from the university is now less than 67%.
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Question is incomplete as it should specify the signficance level of 0.01 to be used.
On Tuesday, Ashley walked the first dog for 27 minutes, the second dog for 35 minutes, and the third dog for 15 minutes. If she started walking the first dog at 8:00 am, what time did she finish walking all the dogs?
Answer:
9:17
Step-by-step explanation:
Answer: 9:17 am
Step-by-step explanation: I added all the minutes together and got 77 minutes. Then I simplified the 77 minutes into an hour and 17 minutes. Then I added the 1hour and 17minutes to 8:00 am.
find the lateral area of the prism
Answer:
We know that the lateral area of any prism is the sum of the areas of its side faces. Thus, the lateral area of a triangular prism is the sum of the side faces, that is the three rectangular faces. The formula to find the lateral area of a triangular prism is, (a + b + c) h or Ph.
so
20×6= 120 sq in
Answer:
120 sq in.
Step-by-step explanation:
LA = ah
LA = 20 × 6
A = 120
array indices must be positive integers or logical values matlabtruefalse
True; In MATLAB, array indices must be positive integers or logical values.
In MATLAB, array indices must indeed be positive integers or logical values. This means that when accessing elements within an array, the index values should be integers greater than zero or logical values (true or false). It is not permissible to use negative integers or non-integer values as array indices in MATLAB.
For example, consider an array called "myArray" with five elements. To access the first element of the array, you would use the index 1. Similarly, to access the fifth element, you would use the index 5. Attempting to use a negative index or a non-integer index will result in an error.
Using valid indices is crucial for proper array manipulation and accessing the correct elements. MATLAB arrays are 1-based, meaning the index counting starts from 1, unlike some programming languages that use 0-based indexing.
In MATLAB, array indices must be positive integers or logical values. This ensures proper referencing and manipulation of array elements. By adhering to this rule, you can effectively work with arrays in MATLAB and avoid errors related to invalid indices.
To know more about
In MATLAB, array indices start from 1. They are used to access specific elements within an array.
In MATLAB, array indices are used to access or refer to specific elements within an array. The index of an element represents its position within the array. It is important to note that array indices in MATLAB start from 1, unlike some other programming languages that start indexing from 0.
For example, consider an array A with 5 elements: A = [10, 20, 30, 40, 50]. To access the first element of the array, we use the index 1: A(1). This will return the value 10.
Similarly, to access the third element of the array, we use the index 3: A(3). This will return the value 30.
Array indices can also be logical values, which are either true or false. Logical indices are used to select specific elements from an array based on certain conditions. For example, if we have an array B = [1, 2, 3, 4, 5], we can use logical indexing to select all the elements greater than 3: B(B > 3). This will return the values 4 and 5.
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The snallest flowering plant is the flowering aquatic duckweed found in australia. it is 0.0236 inch long and 0.0129 inch wide. write these dimensions as fractions in simplest form.
The dimension of the smallest flowering plant is 59/2500 in. long and 129/10,000 in. wide.
To convert Decimal into Fraction form:
Do the following Steps:
Step 1: Make a fraction with the decimal number as the numerator and a 1 as the denominator.
Step 2: Remove the decimal places by multiplication.
Step 3: Reduce the fraction.
Step 4: Simplify the remaining fraction to a mixed number fraction if possible.
Given,
The smallest flowering plant is the flowering aquatic duckweed found in Australia.
And it is 0.0236 inch long and 0.0129 inch wide.
Here we need to write these dimensions as fractions in simplest form.
Rewrite the decimal number as a fraction with 1 in the denominator
So,
=> 0.0236/1 and 0.0129/1
Now, Multiply to remove 4 decimal places. Here, you multiply top and bottom by 10⁴ = 10000.
Then we get,
=> 236/10000 and 129/10000
Now, reduce the fraction by dividing both numerator and denominator by GCF = 4,
=> 59/2500
But the fraction 129/10000 is not reducible.
Therefore, the fraction form is,
=> 59/2500 in. long and 129/10,000 in. wide.
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10 pts + brainliest
help pleasee
(science)
The mass number of the atom is 4.
How to find the mass number of an atom?The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus.
Therefore, the sum of protons and neutron in the nucleus of an atom is mass number of that atom.
Therefore, the atoms in the diagram has 2 electrons, 2 protons and 2 neutrons.
Notice the electrons revolving around the nucleus of an atom.
Therefore,
mass number = mass of neutron + mass of proton
mass number = 2 + 2
mass number = 4
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A radio transmission tower is 160 feet tall. How long should a guy wire be if it is to be attached 13 feet from the top and is to make an angle of 29\deg with the ground? Give your answer to the nearest tenth of a foot.
x = 147 / 0.5446 ≈ 270.2 ft
To find the length of the guy wire for a radio transmission tower, trigonometry concepts are applied. Given a tower height of 160 feet, with the wire attached 13 feet from the top and making an angle of 29° with the ground, we can solve for the length of the guy wire, represented by x.
Using the Pythagorean theorem and considering the right triangle formed by the tower height, the wire attachment point, and the ground, we can set up the equation:
x = √((160 - 13)² + x²)
Next, we apply the tangent function to the given angle:
tan(29°) = (160 - 13) / x
Simplifying, we have:
0.5446 = 147 / x
To solve for x, we rearrange the equation:
x = 147 / 0.5446 ≈ 270.2 ft
Rounding to the nearest tenth of a foot, the length of the guy wire required is approximately 270.2 feet. This wire is attached 13 feet from the top of the tower and makes a 29° angle with the ground.
Trigonometry plays a crucial role in solving real-world problems involving angles and distances. It provides a mathematical framework for calculating unknown values based on known information, enabling accurate measurements and constructions.
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Q8 (6 points) Let x be a binomial random variable with n = 100 and p = 0.3. (a) Can we use the Poisson approximation to find P(30 < = x < 35)? Why? (b) Use the normal approximation to find P(30 < = x< 50) points) If x is a binomial random variable with n = 4 and P(0) = 0.0081, find P(3).
P(3) is approximately equal to 0.139.
(a) Yes, we can use the Poisson approximation to find P(30 < x < 35) because both np and n(1-p) are greater than or equal to 10, where n = 100 and p = 0.3. Therefore, the conditions for the Poisson approximation are satisfied.
Using Poisson approximation, we have:
λ = np = 100 x 0.3 = 30
P(30 < x < 35) ≈ P(X = 31) + P(X = 32) + P(X = 33) + P(X = 34)
= e^(-λ) * (\(λ^31\) / 31!) + e^(-λ) * (λ^32 / 32!) + e^(-λ) * (λ^33 / 33!) + e^(-λ) * (λ^34 / 34!)
≈ 0.1885
(b) Using the normal approximation, we have:
µ = np = 100 x 0.3 = 30
σ = sqrt(np(1-p)) = sqrt(100 x 0.3 x 0.7) = 4.58
P(30 < x < 50) ≈ P((30 - µ)/σ < (x - µ)/σ < (50 - µ)/σ)
≈ P(-4.34 < Z < 4.34) [where Z is a standard normal random variable]
≈ 1
Therefore, P(30 < x < 50) is approximately equal to 1.
(c) Let x be a binomial random variable with n = 4 and P(0) = 0.0081.
We need to find P(3).
Let P(1) = q
Then, from the given information, we have:
P(0) = (1-q)^4 = 0.0081
Solving for q, we get:
q = 1 - (0.0081)^(1/4) ≈ 0.207
Now, using the binomial probability formula, we have:
P(3) = (4 choose 3) * q^3 * (1-q)^1
= 4 * 0.207^3 * 0.793
≈ 0.139
Therefore, P(3) is approximately equal to 0.139.
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Evaluate the function below for x=4. f(x)=3e
−x+2
−2 Round your answer to three decimal places.
The evaluated value of the function f(x) = 3e^(-x+2) - 2 for x = 4 is approximately 0.045.
To evaluate the function, we substitute x = 4 into the given equation and simplify the expression. Plugging in x = 4, we have f(4) = 3e^(-4+2) - 2. Simplifying further, we get f(4) = 3e^(-2) - 2.
Using the approximate value of e as 2.71828, we can calculate the evaluated value. Evaluating 3e^(-2) - 2, we find that f(4) is approximately equal to 0.045 when rounded to three decimal places.
Therefore, when x is 4, the function f(x) = 3e^(-x+2) - 2 evaluates to approximately 0.045.
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Enter the correct answer in the box. what is the standard form polynomial that represents this product? 
The standard form polynomial that represents the product (-2m^3 + 3m^2 - m)(4m^2 + m - 5) is: -8m^5 + 14m^4 - 7m^3 - 3m^2 + 4m - 10
To find the product of the given polynomials, we need to apply the distributive property and multiply each term of the first polynomial with each term of the second polynomial.
(-2m^3 + 3m^2 - m)(4m^2 + m - 5) can be expanded as follows:
-2m^3(4m^2 + m - 5) + 3m^2(4m^2 + m - 5) - m(4m^2 + m - 5)
Applying the distributive property, we have:
-8m^5 - 2m^4 + 10m^3 + 12m^4 + 3m^3 - 15m^2 - 4m^3 - m^2 + 5m + 4m^2 + m - 5
Combining like terms, we get:
-8m^5 + 14m^4 - 7m^3 - 3m^2 + 4m - 10
Therefore, the standard form polynomial representing the product is -8m^5 + 14m^4 - 7m^3 - 3m^2 + 4m - 10.
#Enter the correct answer in the box. What is the standard form polynomial that represents this product?
(-2m3 + 3m2 - m)(4m2 + m - 5)
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PLEASE HELP
If a 1/2 gallon of paint covers 1/6 of a
wall, continuing at this rate how much
paint is needed for the entire wall?
Answer:
3 Gallons
Step-by-step explanation:
If half a gallon of paint covers 1/6 of a wall, then we need 6 1/2 gallons of paint. To make this simpler, we can just say that a gallon of paint can cover 2/6 of the wall. This means that with 2 gallons of paint, we can cover 4/6 of the wall. 3 gallons of paint will cover 6/6 of the wall.
Stephanie is cutting a pie. Stephanie's mother wants one fourth of the pie. The diameter is 20 cm.
What is the sector area of the pie her mother does not want?
Answer:
78.55cm^2
Step-by-step explanation:
Given data
DIameter of pie= 20 cm
Radius of pie= 10cm
Area of pie= πr^2
Area= 3.142*10^2
Area= 3.142*100
Area= 314.2 cm^2
Hence one fourth of 314.2 cm^2 is
= 314.2/4
= 78.55cm^2
Therefore the area of the sector is 78.55cm^2
An employee is paid a salary of \$73,840 per year, plus benefits and overtime (time and a half) on hours worked over 40 per week, working as a civil servant. What is the regular time hourly rate of pay for this employee, and what is her total income in a month where she works 40 hours, 44 hours, 43.5 hours, and 40 hours, weekly, in the month?
A.$37.00/hr and \$6,336.25 in total income
B. $35.50/hr and \$6,079.38 in total income
C.$37.50/hr and \$6,421.88 in total income
D.$36.00/hr and \$6,165.00 in total income
Answer:
B. $35.50/hr and \$6,079.38 in total income
Step-by-step explanation:
Given the following :
Total regular pay earning for the year = $73,840
Let basic salary = b
Overtime = 1.5b
Regular earning per week :
Regular year earning / number of weeks per year
$73840 / 52 = $1420
Regular hours = 40
Regular earning per week = $1420
Regular earning per hour = $1420 / 40
Regular earning per hour = $35.50
Number of overtime hours :
4 hours + 3.5hours = 7.5hours
Overtime pay per hour = 1.5 * regular earning
Overtime pay per hour = 1.5 * 35.5 = $53.25
Total overtime pay = Overtime pay per hour * Number of overtime hours
Total overtime pay = $53.25 * 7.5
Total overtime pay = 399.375
Total pay for the month :
160 regular hours + 7.5 overtime hours
(160 * 35.5) + $399.375
$5,680 + 399.375 = $6,079.375
= $6,079.38
Lucy has a variety of socks in her laundry basket. Without looking, she selects one sock, then
a second.
Are these two events dependent or independent?
Answer:
This is dependent because it depends what sock she picked out first. It would be independent if she put the pulled out sock back into the container
A fair dice is rolled. Find the probability of showing an even prime number
please help me it's math I really need the answer!
Answer:
1/36
Step-by-step explanation:
outcomes/total number of outcomes
1/36
I think this is it but I'm not sure, don't take my word for it if you don't think it's correct either.
A material has a density of 4.5 g/ml and a mass of 2.6 grams, what is the volume?
Answer:
The volume is 11.7
Step-by-step explanation:
\(\frac{m}{v}\) = d
\(\frac{2.6}{v}\) = 4.5
4.5 × 2.6 = 11.7
v = 11.7
What is the slope of 4x-3y=13?
Show your work
Answer:
slope: 3/4
Step-by-step explanation:
slope= - y-intercept\ x-intercept
-(-3/4)
3/4
Answers
A.) 5.9
B.) 7.3
C.8.1
D. 5.8
Answer:
The choice A) 5.9
Step-by-step explanation:
\( \sin(36) = \frac{x}{10} \\ \\ 0.587785 = \frac{x}{10} \\ \\ x = 10 \times 0.587785 \\ \\ x = 5.87785 \\ \\ x = 5.9\)
Create an equivalent expression for 1.5 cubed over 1.3 raised to the fourth power all raised to the power of negative six.
1.3 squared over 1.5 cubed
1.3 to the twenty-fourth power over 1.5 to the eighteenth power
1.5 cubed over 1.3 squared
1.5 to the eighteenth power over 1.3 to the twenty-fourth power
The equivalent expression for 1.5 cubed over 1.3 raised to the fourth power all raised to the power of negative six is 1.5 to the eighteenth power over 1.3 to the twenty-fourth power.
How to explain the expressionHere are the steps to simplify the expression:
Apply the negative power rule: (1.5 cubed over 1.3 raised to the fourth power) raised to the power of negative six is equal to (1.3 raised to the fourth power over 1.5 cubed) raised to the power of six.
Apply the power of a quotient rule: (1.3 raised to the fourth power over 1.5 cubed) raised to the power of six is equal to (1.3 raised to the fourth power)⁶ / (1.5 cubed)⁶.
Apply the power of a power rule: (1.3 raised to the fourth power)⁶ is equal to 1.3(⁴*⁶) = 1.3²⁴.
Apply the power of a power rule: (1.5 cubed)⁶ is equal to 1.5(³*⁶) = 1.5¹⁸.
Therefore, the equivalent expression is 1.5¹⁸ / 1.3²⁴.
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HELPPPPPPPPPPPPPP MEHHHHHHHHHHHH I HAVE A D+ AND GRADE GO OUT THIS FRIDAY PLZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPP
Answer:
Step-by-step explanation:
Clusters:
There is a cluster with a regression line of -0.4
Outliers:
(8,8) because it is not near the cluster that was said earlier.
How to get slope from standard form.
Answer:
Solve the equation for y. See example.
Step-by-step explanation:
I'll use 3x + 5y = 15. First subtract 3x from both sides since it is positive.
\(3x + 5y = 15 \\ - 3x \: \: \: \: \: \: \: \: \:\: \: \: \: \: \: - 3x\)
\(5y = - 3x + 15\)
Now solve for y by dividing each term by 5.
\( \frac{5y}{5} = \frac{ - 3}{5} x + \frac{15}{5} \)
Now simplify.
\(y = \frac{ - 3}{5} x + 3\)
The slope is
\( - \frac{3}{5} \)
Find the volume of the cylinder.
Either enter an exact answer in terms of t or use 3.14 for T
Answer:
the volume is 5 to the next power which is 3 u end up with multiplication which mean u multiply 5 with 3 to get ur units
don’t understand please help
Carolina is mowing lawns for a summer job. For every mowing job, she charges an initial fee plus $6 for each hour of work. Her total fee for a 4-hour job, for instance, is $32 Let y represent Carolina's fee (in dollars) for a single job that took x hours for her to complete.
Complete the equation for the relationship between the fee and number of hours.
The linear equation that models how much Carolina earns depending on the number of hours that she works is:
y = 6*x + 8
How to find the equation between the fee and the number of hours?
Here we know that for every mowing job, Carolina charges $6, plus an initial fee. So if that initial fee is b, we can write the equation as:
y = 6*x + b
We also know that for a 4 hours job she charges $32, then we can replace x by 4 and y by 32 in the equation above.
32 = 6*4 + b
32 = 24 + b
32 - 24 = b
8 = b
Then the linear equation we wanted to find is:
y = 6*x + 8
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Find the sum of 4x^2-7and 6x^2-5
Answer:
10x² - 12
Step-by-step explanation:
4x² - 7 + 6x² - 5 ← collect like terms
= (4 + 6)x² + (- 7 - 5)
= 10x² + (- 12)
= 10x² - 12
an experienced plumber can do the finishing plumbing work on a house in 8 hours. an inexperienced plumber will take 12 hours to do the same job. if two experienced men and three inexperienced men work on an emergency finishing project, how many hours will they take to do the job? 4.8 hours 3 hours 2 hours
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
The number of hours will they take to do the job is 2. Below is the solution:
2(1/8) + 3(1/12) = 1/x
1/4 + 1/4 = 1/x
1/2 = 1/x
x = 2
There is an attachment at the bottom help me please.
Answer:
Fourth option
Step-by-step explanation:
We know that A and B are rational numbers because they can be written as the quotient of two integers. Therefore, that eliminates the first and third options because they state that (at least) one of the numbers is irrational but we know that both are rational, hence, they are incorrect. The second option is incorrect because A · B = \(\frac{mn}{pq}\), not \(\frac{mp + nq}{pq}\), therefore, the correct answer is the fourth option.
rewrite this equation in the form y=ax+b
2y=4x-8
The one year spot interest rate is 4%. The two year spot rate is 5% and the three year spot rate is 6%. You are quoted a swap rate of 5.5% on a 3 year fixed-for-floating swap. Is this rate fair? Explain your response, and if it is not fair, derive the fair swap rate.
The fair swap rate should be not lower than 5.5%.The quoted swap rate of 5.5% on a 3-year fixed-for-floating swap is not fair. To determine the fair swap rate,
we need to calculate the present value of the fixed and floating rate cash flows and equate them. By using the given spot rates, the fair swap rate is found to be lower than 5.5%.
In a fixed-for-floating interest rate swap, one party pays a fixed interest rate while the other pays a floating rate based on market conditions. To determine the fair swap rate, we need to compare the present values of the fixed and floating rate cash flows.
Let's assume that the notional amount is $1.
For the fixed leg, we have three cash flows at rates of 5.5% for each year. Using the spot rates, we can discount these cash flows to their present values:
PV_fixed = (0.055 / (1 + 0.04)) + (0.055 / (1 + 0.05)^2) + (0.055 / (1 + 0.06)^3).
For the floating leg, we have a single cash flow at the 3-year spot rate of 6%. We discount this cash flow to its present value:
PV_floating = (0.06 / (1 + 0.06)^3).
To find the fair swap rate, we equate the present values:
PV_fixed = PV_floating.
Simplifying the equation and solving for the fair swap rate, we find:
(0.055 / (1 + 0.04)) + (0.055 / (1 + 0.05)^2) + (0.055 / (1 + 0.06)^3) = (0.06 / (1 + fair_swap_rate)^3).
By solving this equation, we can determine the fair swap rate. If the calculated rate is lower than 5.5%, then the quoted swap rate of 5.5% is not fair.
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If equilateral polygon PENTA is inscribed in a circle of radius 15 inches so that Al of its vertices are on the circle what is the length of the shorter arc from vertex P to vertex N
The length of the shorter arc from vertex P to vertex N is 37.68 inches.
What are Polygons?In a two-dimensional plane, a polygon is a closed object formed of line segments rather than curves. Polygon is a word that combines the words poly (which means numerous) and gon (which means sides).
To create a closed figure, at least three line segments must be connected end to end.
Given an equilateral polygon, PENTA is inscribed in a circle of radius 15 inches,
The central angle of the polygon leaning to the shortest chord is
α = 2π/5
α = 2*360/5 = 72°
The central angle of the polygon leaning to the shorter arc from vertex P to vertex N is
β = 2(2π/5)
β = 144°
The length of the corresponding arc is
= r*β
here r = 15 inches, and π = 3.14
length = r*2*2π/5
length = 15*2*2(3.14/5)
length = 37.68 inches.
Hence length is 37.68 inches.
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