The 95% confidence interval for this population proportion is (0.10, 0.23).
What is a confidence interval?A confidence interval is a range of values that are constrained by the statistic's mean and that are likely to include an unidentified population parameter. The proportion of likelihood, or certainty, that the confidence interval would include the real population parameter when a random sample is drawn several times is referred to as the confidence level.
Sample size n = 125
number of people who planned to take an extended vacation = 21
sample proportion p = 21/125 = 0.168
Confidence level = 0.95
significance level α = 1-0.95 = 0.05
Z score =[tex]Z_{\alpha 2}[/tex] = Z(0.05) = 1.96, from Z table.
The confidence interval for population proportion is-
p±[tex]Z_{\alpha 2}[/tex] x √{p(1-p)}/n =0.168±1.96 x 0.168 x √{(1-0.168)}/125
=0.168±1.96 x 0.0334
=0.168±0.0655
=(0.1025, 0.2335)
=(0.10, 0.23)
Therefore, the confidence interval is (0.10, 0.23).
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HELP!! Drag the tiles to the correct boxes to complete the pairs.
Match each rational expression to its simplest form.
Answer:
Step-by-step explanation:
Mr. Muehlenweg S class used 1 3/4 cups baking soda for an experiment. If his students performed the experiment 6 1/2 times, how much baking soda did they use?
Total no. of cups of baking soda used for the experiment in improper fraction is [tex]\frac{91}{8}[/tex].
How much baking soda was used?Initial no. of cups of baking soda used for an experiment = [tex]1\frac{3}{4}[/tex]
Converting mixed fraction to improper fraction,
[tex]1\frac{3}{4}=\frac{7}{4}[/tex]
No. of times the experiment performed by students = [tex]6\frac{1}{2}[/tex]
Converting mixed fraction to improper fraction,
[tex]6\frac{1}{2} = \frac{13}{2}[/tex]
Total no. of cups of baking soda =(Initial no. of cups)* (No. of times)
[tex]=\frac{7}{4} *\frac{13}{2} \\\\=\frac{91}{8} \\\\[/tex]
= 11.4 (decimal form)
What is a mixed fraction?A mixed fraction is one that has both its quotient and remainder represented. A mixed fraction like [tex]1\frac{3}{4}[/tex] is one where the remainder is 3 and the quotient is 1. Therefore, a mixed fraction is made up of both a full number and a correct fraction. A whole number and a legal fraction are both expressed together as a mixed number.A number between any two whole numbers is typically represented by it. Any fraction whose numerator exceeds or is equal to its denominator is considered improper. When the numerator value is less than the denominator, the fraction is said to be proper.To learn more about improper fraction, refer:
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Tom weighs 5kg more than Harry. Harry weighs 3kg more than Freddie who, in turn weighs
2 kg less than Alfie. What is the difference, in kilograms, between Tom and Alfie?
The difference between Tom and Alfie is 1 kg
Let's call the weight of Tom T, the weight of Harry H, the weight of Freddie F, and the weight of Alfie A. We are given that T = H + 5, H = F + 3, and F = A - 2.
Substituting the second and third equations into the first equation gives us:
T = (A - 2) + 3 + 5
T = A - 2 + 3 + 5
T = A + 1
So the difference between Tom and Alfie is T - A = A + 1 - A = 1 kg.
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A realtor makes 4% commission on the sale of a home. If she sold a home for $250,000, how
much will she make in commission?
commission = 250,000×4/100
commission = $10,000
Answer:
$10,000
Step-by-step explanation:
because of acom by Jill one GB cb to be yes we will i you and the ward off Luth you sir ma we have in mind the customer service is not available for is it possible to you IJN you and the ward screen shot of a quick response because I am not you sir I am not sure if my proposal sounds interesting for you ma I will send it to u the picture
The two-way frequency table contains data about students' preferred exercise.
Enjoys swimming Enjoys cycling Row totals
Likes running 28 62 90
Does not like running 46 64 110
Column totals 74 126 200
What is the joint relative frequency of students who do not like to run but enjoy cycling?
64%
55%
32%
23%
The joint relative frequency for those students who don't like to run, but however enjoy cycling, is C. 32%.
How to find the joint frequency ?The joint frequency for students who like cycling, but do not like running, can be found by the formula :
= Number of students who enjoy cycling but don't enjoy running / Number of students in total
Number of students who enjoy cycling but don't enjoy running = 64
Number of students in total = 200
The joint frequency is :
= 64 / 200 x 100%
= 0.32 x 100 %
= 32 %
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Suppose that in a certain state, all automobile license plates have three uppercase letters followed by four digits. Use the method illustrated in Example 9.2.2 to answer the following questions. (a) How many different license plates are possible? To answer this question, think of creating a license plate as a 6-step process, where steps 1-3 are to choose the uppercase letters to put in positions 1-3 and the remaining steps are to choose the digits to put in the remaining positions. There are 17576 ways to perform steps 1-3, and there are 10000 ways to perform the remaining steps. Thus, the number of license plates is 175760000 (b) How many license plates could begin with A and end in 0? and the number of ways to place the 0 in the In this case, the number of ways to place the A in Step 1 is 1 final step is 1 . Thus, the answer is 676000 (c) How many license plates could begin with BWC? In this case, the number of ways to perform steps 1-3 is ___ Thus, the answer is ___(d) How many license plates are possible in which all the letters and digits are distinct? (e) How many license plates could begin with AB and have all letters and digits distinct? Enter an exact number
the total number of license plate is 17576000 and In this the number ways to place 'A' in step 1 is = '1'1, and the number of steps '0' in final steps id '1' thus the total answer is 67600
What is permutation and combination?In mathematics, there are two alternative methods for dividing up a collection of items into subsets: combinations and permutations. Any order may be used by a combination to list the subset's elements. An ordered list of a subset's components is called a permutation.
There are [tex]26^3[/tex] = 17576, ways to perform step 1-3, and there are [tex]10^3[/tex] = 1000, ways to perform remaining steps .
the total number of license plate is 17576000
In this the number ways to place 'A' in step 1 is = '1'1, and the number of steps '0' in final steps id '1'
thus the total answer is 67600
26 X 25 X 24 X 10 X 9 X 8 = 11232000
24 X 10 X 9 X 8 = 17280
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Write an equation for the parabola when the x intercepts are (-2,0) and (-4,0)
Answer:
[tex]y = x^2 + 6x + 8[/tex]
Step-by-step explanation:
⭐What is the equation of a parabola in standard form?
[tex]y = ax^2 + bx + c[/tex]⭐Whenever you factorise a quadratic (parabola), you are writing the parabola in terms of its x-intercepts.
⭐ Therefore, the expressions of the x-intercepts are the factors of your quadratic.
⭐What are factors of a number?
factors are 2 or more numbers or expressions that multiply together to become a numberWe have to reverse-engineer this problem to find the quadratic by:
re-writing the quadratic in terms of its factors (the x-intercepts)multiplying the factorssimplifying the product from step #21. Re-write the quadratic in terms of its factors
If one of the x-intercepts is -2, then the expression for said x-intercept is: [tex](x+2)[/tex]
If one of the x-intercepts is -4, then the expression for said x-intercept is:
[tex](x+4)[/tex]
2. Multiply the factors
[tex]y = (x+2)(x+4)[/tex]
[tex]y = x^2 + 4x + 2x + 8[/tex]
3. Simplify the products
[tex]y = x^2 + 6x + 8[/tex]
What is as a fraction?
A fraction means a part of something or a number of parts of something. The number on the bottom shows how many parts something has been divided into ½ means 1 part of something that has been divided into 2 parts. We call this a half. If you add two halves together you get one.
Answer: A fraction is a numerical quantity that is not a whole number
Step-by-step explanation:
PLS HELP
Select the correct answer.
A museum curator estimates that 85% of people who attend the museum would return a second time. She randomly surveys
50 people and finds that only 75% indicate that they would return a second time. So she decides to randomly survey an additional
100 people.
if her model is valld, what could she expect from the 150 total survey results?
The difference between the data and the model will get larger.
The difference between the data and the model will stay the same.
O it is impossible to predict how the difference between the data and the model will change
The difference between the data and the model will get smaller.
O
Submit
The difference between the model and the data will get smaller.
What is the sample size?A sample is a percentage of the total population in statistics. You can use the data from a sample to make inferences about a population as a whole.
Given here, she 50 people and finds that only 75% and additional 100 people hence changing the sample size
As our sample size increases, the confidence in our estimate increases, our uncertainty decreases and we have greater precision. Thus with the increase in sample size, the data would move closer to the estimated probability.
Hence The difference between the model and the data will get smaller.
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Answer:
The difference between the data and the model will get smaller.
Step-by-step explanation:
Plato/Edmentum
when finding 6.1/0.1, how is the decimal point moved?
The decimal point can be removed by dividing 10 with each numerator and denominator of 6.1/0.1
(61/10)/(1/10) = 61/10 x 10 = 61
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
6.1/0.1
We will remove the decimal point by dividing 10 with both the numerator and denominator.
(61/10)/(01/10)
= 61/10 x 10/1
= 61/1
= 61
Thus,
The value of 6.1/0.1 is 61.
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At a movie theater, one group of people spent $54 on 3 large popcorns and 6 sodas.
Another group spent on $77 on 4 large popcorns and 9 sodas. Determine the cost of a
large popcorn and the cost of a soda
Answer: 54
Step-by-step explanation: bc ? you just divid 54 by 3 and 6 then you divid 77 by 4 and 9 then divide them both tada
Answer:
sodas cost $5 and a large popcorn costs $8
create formulas out of the situations making the variable p=popcorn and s=soda
so,
3p + 6s = 54
and
4p + 9s = 77
then choose one variable to solve for
3p = 54 - 6s
divide both sides by 3
p = 18 - 2s
then plug your answer for p into the other equation:
4(18 - 2s) + 9s = 77
finally, solve for s
72 - 8s + 9s = 77
s = 5
if s=5 then
3p + 6(5) = 54
p = 8
Staci pays $32.70 for 5 cell phone cases. Each case costs the same amount. How much does each case cost?
Part A
Which expression represents the problem?
$32.70 × 5
$32.70 ÷ 5
$32.70 + 5
$32.70 – 5
Part B
Evaluate the expression from Part A.
$ ( ??? )
Answer:
$32.70 ÷ 5
Each case is $6.54.
Step-by-step explanation:
$3270 for 5 cases, meaning you would split $32.70 into 5.
$32.70 ÷ 5 phone cases = $6.54
This also means each case is $6.54. To prove this, multiply by 5.
Based on the figure given below.
AC = 20cm
BC = 24Cm
AB = 16cm
CD = 15Cm and CE = 18cm then
a) Show that triangle ABC sim triangle DEC
b) How long is DC ?
Answer:
Step-by-step explanation:
A.) To show that triangle ABC is similar to triangle DEC, we need to prove that the ratios of the sides of the two triangles are equal.
First, we can write the ratios of the sides of triangle ABC as follows:
AC/AB = 20/16 = 5/4
BC/AB = 24/16 = 3/2
Now, we can write the ratios of the sides of triangle DEC as follows:
CE/CD = 18/15 = 6/5
AC/CD = 20/15 = 4/3
Since the ratios of the sides of the two triangles are equal, it follows that triangle ABC is similar to triangle DEC.
B.) To find the length of DC, we can use the fact that triangle ABC is similar to triangle DEC. Since the ratios of the sides of the two triangles are equal, we can set up a proportion to solve for DC.
First, we can write the ratio of the sides of triangle ABC as follows:
AC/AB = DC/CE
Then, we can substitute the known values for AC, AB, and CE:
20/16 = DC/18
Then, we can cross-multiply to solve for DC:
DC = (20/16) * 18
= (5/4) * 18
= 45/4
= 11.25 cm
Therefore, the length of DC is approximately 11.25 cm.
Answer:
Step-by-step explanation:
To show that triangle ABC is analogous to triangle DEC, we need to prove that the rates of the sides of the two triangles are equal.
First, we can write the rates of the sides of triangle ABC as follows
AC/ AB = 20/16 = 5/4
BC/ AB = 24/16 = 3/2
Now, we can write the rates of the sides of triangle DEC as follows
CE/ CD = 18/15 = 6/5
AC/ CD = 20/15 = 4/3
Since the rates of the sides of the two triangles are equal, it follows that triangle ABC is analogous to triangleDEC.
B.) To find the length of DC, we can use the fact that triangle ABC is analogous to triangle DEC. Since the rates of the sides of the two triangles are equal, we can set up a proportion to break for DC.
First, we can write the rate of the sides of triangle ABC as follows
AC/ AB = DC/ CE
also, we can substitute the known values for AC, AB, and CE
20/16 = DC/ 18
also, we cancross-multiply to break for DC
DC = (20/16) * 18
= (5/4) * 18
= 45/4
= 11.25 cm
Thus, the length of DC is roughly11.25 cm.
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a persons weight varies directly with gravity if a person weights 180 pounds on earth they will weigh only 30 pounds on the moon if harsh weights 54 pounds on earth how much would he weight on the moon
The weight of harsh on the moon if he weighs 54 pounds on earth is 9 pounds
How to calculate direct variation?Weight varies directly with gravity
Let
Weight of a person = w
Gravity = g
So,
w = k × g
Where,
k = constant of proportionality
If w = 180 pounds and g = 30 pounds
w = k × g
180 = k × 30
180 = 30k
divide both sides by 30
k = 180/30
k = 6
If w = 54 pounds g = ?
w = k × g
54 = 6 × g
54 = 6g
divide both sides by 6
g = 54/6
g = 9 pounds
Therefore, harsh weighs 9 pounds on the moon.
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find a polynomial function whose graph passes through (7,11) (11,-12) and (0,4)
The polynomial function whose graph passes through (7,11) (11,-12) and (0,4) will be y = -0.614x² + 5.295x + 4.
What is a function?A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.
Assume the polynomial function is quadratic. Then the equation is given as,
y = ax² + bx + c
At (0, 4), we have
4 = a(0)² + b(0) + c
c = 4
Then the equation is written as,
y = ax² + bx + 4
At (7, 11), we have
y = ax² + bx + 4
11 = 49a + 7b + 4 ...1
At (11, -12), we have
- 12 = 121a + 11b + 4 ...2
Equations 1 and 2 are solved by a calculator. Then we have
a = - 0.614 and b = 5.295
The polynomial capability whose diagram goes through (7,11) (11,- 12) and (0,4) will be y = - 0.614x² + 5.295x + 4.
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Can someone please solve this problem for me.
The cost of one chair is [tex]x=54.75[/tex] $ and the cost of one table is [tex]y=49.5[/tex] $.
What is the total cost?
The total cost formula is used to combine the variable and fixed costs of providing goods to determine a total. The formula is:
Total cost = (Average fixed cost x average variable cost)
Let cost of one chair is [tex]x[/tex]
Let cost of one table is [tex]y[/tex]
So,
[tex]5x+3y=31[/tex] ...(1)
[tex]2x+6y=52[/tex] ......(2)
Solving equation (1) and (2) we get
[tex]a_1x+b_1y+x_1=0\\\\a_2x+b_2y+c_2=0[/tex]
[tex]\frac{x}{b_1c_2-b_2c_1}=\frac{y}{c_1a_2-c_2a_1}=\frac{1}{a_1b_2-a_2b_1}\\\\\frac{x}{3(31)-6(52)}=\frac{y}{31(2)-52(5)}=\frac{1}{5(2)-2(3)}\\\\\frac{x}{93-312}=\frac{y}{62-260}=\frac{1}{10-6}\\\\\frac{x}{-219}=\frac{y}{-198}=\frac{1}{-4}\\\\x=54.75,y=49.5[/tex]
Hence, the cost of one chair is [tex]54.75[/tex] $ and the cost of one table is [tex]49.5[/tex] $.
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Consider the reaction: SO2(g) + 1/2 O2(g)SO3(g) Write the equilibrium constant for this reaction in terms of the equilibrium constants, and , for the reactions below: 2 S(s) + 3 O2(g) 2 SO3(g) S(s) + O2(g) SO2(g) For answers with both a subscript and a superscript, enter the subscript first. For example, enter K12 if the first equilibrium constant should be squared. K =
the equilibrium constant for this reaction in terms of the equilibrium constants is Knet = √Ka/Kb
and for the reactions below:
2 S(s) + 3 O2(g) 2 SO3(g) is √Ka
S(s) + O2(g) SO2(g) is 1/Kb
A reversible reaction mechanism progresses from initial conditions to chemical equilibrium at a constant temperature, with all reactants and products present in constant non-zero amounts. At this temperature, an equilibrium constant "K" exists. It is frequently followed by a subscript to indicate the type of equilibrium constant that it considers depending on the phases of reaction species that it considers. The expression for each type of equilibrium constant differs with the direction and stoichiometry of the balanced reaction equation. This enables existing equations with known "K" values to be exploited in order to derive new "K" values for related systems.
SO2(g) + 1/2 O2(g)SO3 (g) is the desired reaction equation
We consider the first given reaction system at the bottom. We divide its coefficients by two to get the square root of the initial equilibrium constant: 2 S(s) + 3 O2(g) (g) 2 SO3(g) = √Ka
Then we reverse the second given reaction system at the bottom. Its current equilibrium constant is the reciprocal of the predecessor: S(s) + O2(g) SO2(g) is 1/Kb
The above two equations total to yield our target equation. The product of the two values obtained above yields the target equilibrium constant: Knet = √Ka/Kb
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5x^2-13+6=0
i need helppp
Answer:
answer is 2.5
Step-by-step explanation:
on their next training run, pepe averaged a speed of 2/3 of a mile in 5 minutes, while paula averaged 1/4 of a mile in 2 minutes. if pepe and paula each ran at their individual pace for 60 minutes, how many total miles did they cumulatively run?
Answer:
15.5
Step-by-step explanation:
Pepe= 2/3 x 12 = 8
Paula= 1/4 x 30 = 7.5
8+7.5=15.5
For each of these lists of integers, find a simple formula or rule that generates the terms of an integer sequence that begins with the given list. Assuming that your formula or rule is correct, determine the next three terms of the sequence.
f ) 1, 3, 15, 105, 945, 10395, 135135, 2027025, 34459425, . . .
The simple formula or rule that generates the terms of an integer sequence that begins with the given list is given below.
What is sequence?Sequence is the order in which elements, such as numbers, letters, or symbols, follow one another in a specific order. It is a fundamental concept in mathematics and computer science, and is used in many other areas including music, language, and art. In mathematics, it is often used to describe patterns or to represent numerical values. In computer science, it is used to represent data structures, such as lists and arrays.
a. The sequence can be expressed as 3x2^n, where n is the position of the number in the sequence. The next three terms are 127, 162, and 201.
b. The sequence can be expressed as 4n+3, where n is the position of the number in the sequence. The next three terms are 47, 51, and 55.
c. The sequence can be expressed as 2^n+n-1, where n is the position of the number in the sequence. The next three terms are 1111, 10000, and 10011.
d. The sequence can be expressed as the number of times the previous value is repeated, starting with 1. The next three terms are 5, 5, and 8.
e. The sequence can be expressed as 4x3^n, where n is the position of the number in the sequence. The next three terms are 5906, 17718, and 53154.
f. The sequence can be expressed as (n+1)!+(n-1)!+2, where n is the position of the number in the sequence. The next three terms are 27027025, 94594500, and 34459425.
g. The sequence can be expressed as the number of times the previous number is repeated, starting with 1. The next three terms are 0, 0, and 1.
h. The sequence can be expressed as 4^n, where n is the position of the number in the sequence. The next three terms are 4294967296, 17179869184, and 68719476736.
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Complete questions as follows-
For each of these lists of integers, provide a simple formula or rule that generates the terms of an integer sequence that begins with the given list. Assuming that your formula or rule is correct, determine the next three terms of the sequence.
a. 3, 6, 11, 18, 27, 38, 51, 66, 83, 102, . . .
b. 7, 11, 15, 19, 23, 27, 31, 35, 39, 43, . . .
c. 1, 10, 11, 100, 101, 110, 111, 1000, 1001, 1010, 1011, . . .
d. 1, 2, 2, 2, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, . . .
e. 0, 2, 8, 26, 80,242,728,2186,6560,19682, . . .
f. 1, 3, 15, 105, 945, 10395, 135135, 2027025, 34459425, . . .
g. 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, . . .
h. 2, 4, 16, 256, 65536, 4294967296, . . .
Determine the population mean, variance, and standard deviation for the set of data. (Round your answers to two decimal places.)
3, 6, 8, 12, 13, 15
mean variance standard deviation
Given the set of data, we can calculate that the mean is 9.5, the variance is 17.58 and the standard deviation is 4.19
Mean, variance, and standard deviation
The concepts of mean, variance and standard deviation are very basic but very important in statistics.
Mean is the average of all data in a sample group, which is obtained by adding up all the data values, then dividing by the number of samples.
[tex]mean = \frac{sum all of the data}{size of data}[/tex]
Variance is a value that describes the variation of data, by measuring how far each piece of data is spread from the average of a data set.
[tex]variance = \frac{sum (x_{i} - mean)^{2} }{n}[/tex]
Standard Deviation is a measure of the spread of observations in a data set relative to their mean. it measures how many observations in a data set differ from the mean and is the square root of the variance.
σ = [tex]\sqrt{variance}[/tex]
Now we can calculate the mean of the given data as follows:
[tex]mean = \frac{sum all of the data}{size of data}[/tex]
= (3 + 6 + 8 + 12 + 13 + 15) / 6
= 57 / 6
= 9.5
Then we can calculate the variance as follows:
[tex]variance = \frac{sum (x_{i} - mean)^{2} }{n}[/tex]
= [tex]\frac{((3-9,5)^{2} + (6-9,5)^{2} + (8-9,5)^{2} + (12-9,5)^{2} + (13-9,5)^{2} + (15-9,5)^{2} )}{6}[/tex]
= (42,25 + 12,25 + 2,25 + 6,25 + 12,25 + 30,25) / 6
= 105.5 / 6
= 17.58
Standard deviation can be calculated from the variance:
σ = [tex]\sqrt{variance}[/tex]
= [tex]\sqrt{17.58}[/tex]
= 4.19
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Dr. Bert Vogelstein and his partners study the causes of cancer. In 2017, they published a study of 32 types of cancer. The study concluded that most cancer cases are caused by DNA replication errors. In fact, 66% of the cancer cases they studied were caused by random DNA replication errors. Environmental factors such as diet, sunburns, and smoking caused 29% of the cancers. The last 5% of cancers in the study were caused by inherited factors. What happens as a result of DNA replication? 0
A. A blueprint is transferred from the nucleus to the ribosome.
B. mRNA encodes a message from DNA. O
C. A chromosome with two identical DNA strands is formed. O
D. A protein is formed.
The result of DNA replication, given the fact that most cancer cases came as a result of DNA replication errors, is C. A chromosome with two identical DNA strands is formed.
What is a DNA replication ?The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication.
After this process is complete and all the DNA has been copied, the cell actually has twice as much DNA as it needs, which it can then divide and parcel into the daughter cell, resulting in the daughter cell and the mother cell being nearly genetically identical in many cases.
Sometimes however, there will be errors in DNA replication, and this can lead to things like cancer as shown by Dr. Bert Vogelstein.
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A company offers cable television at $29.95 per month plus a one-time installation fee. The total cost for the first six months of service is $214.70
The linear equation that represent the total cost after x month is y = 35 + 29.95x.
What is linear equation?
A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."
Given that, a cable operator offer at $29.95 per month plus a one-time installation fee.
Assume that, a be one time installation fee.
After x month, they need to pay without one-time installation fee is 29.95x.
The total amount that need to pay after x month is a + 29.95x
The linear equation that represents total cost after x month is
y = a + 29.95x
Putting y = 214.70 and x = 6
214.70 = a + 29.95 × 6
214.70 = a + 179.70
a = 35.
Putting a = 35 in y = a + 29.95x
y = 35 + 29.95x
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8. Solve the equation 1/4-2x-7/8=x/2 .
9. Dicson pays $610 for 3 DVDs and 2 blue-ray discs. If the price of each blue-ray disc is $10 less than 2 times that of a DVD, find the price of
(a) a DVD,
(b) 3 blue-ray discs.
The value of x in the algebraic equation is -1/2 and using system of linear equation to solve the problem, the cost of DVD and blue-ray are 84.3 and 178.6 respectively
Linear EquationThis is a mathematical statement that represent an algebraic problem. It often two expression equating with one another.
8)
1/4 [(-2x - 7) / 8] = x / 2
Multiply through by 1/4
(-2x - 7) / 32 = x / 2
Cross multiply both sides
2(2x - 7) = 32x
4x - 14 = 32x
collect like terms
32x - 4x = - 14
28x = -14
x = -14 / 28
x = - 1/2
9)
To solve this problem, we should write a system of linear equations;
Let;
x = DVDy = blue - ray3x + 2y = 610 ...eq(i)
y - 10 = 2x ...eq(ii)
From equation (ii)
y = 2x + 10 ...eq(iii)
Put eq(iii) into equ(i)
3x + 2(2x + 10) = 610
3x + 4x + 20 = 610
x = 590/7 = 84.3
Put x = 84.3 into equ(ii)
y - 10 = 2(84.3)
y = 1250 / 7
y = 178.6
The cost of DVD is 84.3 and the cost of blue-ray is 178.6
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a) What is 10% of 40 ?
b) What number is 10% more than 40 ?
The expression 10% of 40 is 4 and 10% more than 40 is 44
(a) What is 10% of 40?From the question, we have the following parameters that can be used in our computation:
10% of 40
Express "of" as products
So, we have
10% of 40 = 10% * 40
Evaluate
10% of 40 = 4
b) What number is 10% more than 40?In this case, we have:
10% more than 40
This means that
10% more than 40 = 40 * (1 + 10%)
Evaluate
10% more than 40 = 44
Hence. 10% more than 40 is 44
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Use the scale to help you solve the equation and find the value of x. Enter the
value of x below.
x+ 5 = 12
X =
Answer: 7
Step-by-step explanation:
x=12-5
x=7
Answer:
x=7
Step-by-step explanation:
12-5=7 or 7+5=12
Use the Divergence Test to determine whether the following series diverges or state that the test is inconclusive. Select the correct answer below and fill in the answer box to complete your choice. O A. According to the Divergence Test, the series converges because lim ak = k- 00 (Simplify your answer.) OB. According to the Divergence Test, the series diverges because lim ax = kos (Simplify your answer.) OC. The Divergence Test is inconclusive because lim ak (Simplify your answer.) OD. The Divergence Test is inconclusive because lim ak does not exist.
The Divergence Test is inconclusive because lim ak = ∞
The Divergence Test is used to determine whether a given infinite series converges or diverges.
In order to use the Divergence Test, we must examine the limit of the terms of the series as n approaches infinity.
In the given series, the limit of the terms as n approaches infinity is not defined. Therefore, the Divergence Test is inconclusive.
The Divergence Test is inconclusive because lim ak = ∞
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Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost $30 and same-day tickets cost $35. For one performance, there were 55 tickets sold in all, and the total amount paid for them was $1825. How many tickets of each type were sold?
Answer:
sorry i messed up my first calculations, currently recalculating
Step-by-step explanation:
Answer:
35 same-day tickets20 advance ticketsStep-by-step explanation:
You want the number of $30 advance tickets and $35 same-day tickets sold, when a total of 55 tickets were sold for $1825.
SetupLet s represent the number of same-day tickets sold. Then 55-s is the number of advance tickets sold, and total revenue is ...
35s +30(55 -s) = 1825
Solution5s = 175 . . . . . . Simplify, subtract 1650
s = 35
55-s = 30
35 same-day and 30 advance tickets were sold.
Find f. (Use C for the constant of the first antiderivative and D for the constant of the second antiderivative.)
f ''(x) = 2x + 4ex
After integration, the required function f is (2x³ - sin (x) + Cx + D).
What is the integration of 'xⁿ' and 'sin (x)'?
[tex]\int {x^{n} } \, dx = \frac{x^{n+1} }{n+1} + C\\\\\\\int {sinx} \, dx = -cosx + C[/tex]
Given, f''(x) = 12x + sin x
Therefore,
[tex]\int {f''(x)} \, dx \\\\=\int {f'(x)} \, dx \\\\\\= \int{12x + sin x} \, dx + C\\\\= 6x^{2} - cosx + C\\[/tex]
Again, f'(x) = 6x - cos (x) + C
Therefore,
[tex]\int {f'(x)} \, dx\\ \\=\int {f(x)} \, dx \\\\= \int {6x^{2} - cosx + C } \, dx \\\\= 2x^{3} - sinx + Cx + D[/tex]
Therefore, the required function is (2x³ - sin (x) + Cx + D).
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What are the values of u and v?
u = ?°
v = ?°