Therefore, the number of students who study only one subject is n(H-only) + n(G-only) = 14 + 28 = 42.
What do you mean by set?In mathematics, a set is a collection of distinct objects, which are called its elements. These objects can be anything, such as numbers, letters, or even other sets. Sets are usually denoted by capital letters and the elements of a set are listed within braces, separated by.
Given by the question.
i. n (H ∩ G) can be found using the formula:
n(H ∩ G) = n(H) + n(G) - n(H U G)
where n (H U G) represents the number of students who study either History or Government or both.
We know that n(H) = 2x and n(G) = 3x. Also, n(U) = 54, which means the total number of students is 54. Therefore, we can write:
n (H U G) = n(H) + n(G) - n (H ∩ G)
54 = 2x + 3x - x
54 = 4x
x = 13.5
Since x must be a whole number, we can round it up to 14. Therefore, n (H ∩ G) = x = 14.
ii. The number of students who study only one subject can be found by subtracting n (H ∩ G) from n(H) and n(G) respectively, and then adding the number of students who study neither History nor Government.
n(H-only) = n(H) - n (H ∩ G) = 2x - x = x = 14
n(G-only) = n(G) - n (H ∩ G) = 3x - x = 2x = 28
n(Neither) = n(U) - n (H U G) = 54 - 14 = 40
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Complete the process of solving the equation.
Fill in the missing term on each line. Simplify any fractions.
11w + 3 = 14
11w =
W =
Subtract 3 from both sides
Divide both sides by 11
Answer:
w = 1
Step-by-step explanation:
If we read the problem, we are given the instructional steps to solve this problem. Lets do it anyway without any help.
[tex]11w+3=14[/tex]
We, subtract 3 on both sides (3 - 3, 14 - 3)
[tex]11w=11[/tex]
Divide by 11w (11w/11w, 11/11w)
[tex]w=1[/tex]
find the volume of a frustum of a pyramid with square base of side 27, square top of side 15 and height 10.
The volume of the frustum of the pyramid is 4530 cubic units.
To find the volume of a frustum of a pyramid, we can use the formula
V = (1/3)h(A1 + A2 + sqrt(A1A2))
Where
V is the volume of the frustum.
h is the height of the frustum.
A1 is the area of the base of the frustum.
A2 is the area of the top of the frustum.
In this case, the frustum has a square base of side 27 and a square top of side 15. Therefore, we have
A1 = 27^2 = 729
A2 = 15^2 = 225
h = 10
Now we can plug these values into the formula
V = (1/3)10(729 + 225 + sqrt(729*225))
V = (1/3)10(954 + sqrt(164025))
V = (1/3)10(954 + 405)
V = (1/3)10(1359)
V = 4530 cubic units
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Samir bought three pounds of strawberries for $12.00. What is the price, in dollars
per ounce of strawberries?
1 pound = 16 ounces
Before you try that problem, answer the question below.
How many ounces of strawberries did Samir buy?
PLEASE HELP ME!!! Type the correct answer in each box. Use T for true and F for false.
Complete the truth table for the contrapositive of a conditional statement.
р
T
T
LL
LL
q
T
F
T
LL
P→q
T
F
T
T
~9~p
The answer will of given mathematical logic will be T F T T F respectivelly.
What fundamental ideas underlie mathematical logic?A negation, conjunction, and disjunction are the fundamental mathematical logics. The symbols for negation, conjunction, and disjunction in mathematical logic are "," "," and "v," respectively.
What is the purpose of mathematical logic?Logical proofs frequently employ mathematical logic. Proofs are legitimate arguments that establish the veracity of mathematical assertions. A series of statements make up an argument. The conclusion is the last assertion, and the premises are all the statements that came before it (or hypothesis).
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The complete truth table is shown in the below diagram.
≈ q → ≈ p: True False True True
Define the conditional statement for contrapositive?The contrapositive of a conditional statement is a new conditional statement that is formed by negating both the hypothesis (the "if" part) and the conclusion (the "then" part) of the original statement, and switching their positions. The truth table for the contrapositive of a conditional statement has the same number of rows as the truth table for the original statement.
For example, if the original statement is "If it is raining, then the ground is wet", then the contrapositive would be "If the ground is not wet, then it is not raining."
According to the given table the contrapositive of a conditional statement q and p is defines as;
True
False
True
True
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show the value of the following decimal floating-point number as a single precision floating point values following the ieee std 754-1985111.125
The value of the following decimal floating-point number as a single precision floating point values following the ire std 754-1985111.125 is
1100 0001 0110 0100 0000 0000 0000 0000
= C1640000H
IEEE-754 representation for float (single-precision) type is as follows
Sign - 0
Exponent - 1 to 18
Mantissa - 9 to 31
So the exponent field is 8 bits and the mantissa is 23 bits (the precision is actually 24 bits due to the implicit 1 needed in the normalized representation; IEEE 754 also allows demoralized numbers close to 0, but this does not does not apply to the particular question).
Exponential fields also require signs to represent fractions. IEEE 754 does this by giving a bias - 127 for single precision, which means we just subtract 127 from the suggested value to get the actual value. So 0 becomes -127 and 255 (the maximum 8-bit value becomes 128.
Now, coming to the given question we need to represent -14.25 which equals -1110.01 in binary.
Converting to normalized form (only one to the left ) we get
-11101.01 =-1.11001 × 2³
Since we omit the implied in IEEE-754 representation we get
Mantissa bits = 11001
Exponent bits = 11 + 0111111 = 10000010 (Adding bias Sign bit 1)
(since number is negative)
This will be 1 × 110000010 = 11001000000000
Grouping in 4 bits to convert ot Hexadecimal we get
1100 0001 0110 0100 0000 0000 0000 0000
= C1640000H
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What is the meaning of "Euclidean geometry"?
The concept of Euclidean geometry is the study of geometrical shapes (plane and solid) and figures based on different theorems and axioms.
What is the concept of Euclidean geometry?The concept of Euclidean geometry as required to be discussed is basically introduced for flat surfaces or plane surfaces. The postulates of the Euclidean geometry are as follows!
1 : A straight line may be drawn from any one point to any other point.
2 :A terminated line can be produced indefinitely.
3 : A circle can be drawn with any centre and any radius.
4 : All right angles are equal to one another (Congruent).
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Use the slope and y-intercept to identify the equation of this line.
Answer:
D. y = -2x
Step-by-step explanation:
slope = rise/run = 2/-1 = -2
y-intercept = (0,0)
y = mx + b
y = -2x + 0
y = -2x
Which function represents the following graph?
Oy=√√x-3+3
Oy=√√x+3+3
O y=3√√x-3+3
Oy-3√x+3+3
The correct option b) [tex]\rm y = \sqrt{x+ 3} + 3[/tex] is a function of the given graph.
What particular graph best illustrates a function?The graph οf a relatiοn is said tο reflect a functiοn if a vertical line drawn anywhere οn the graph οnly intersects the graph οnce. In the event when a vertical line can graph is nοt a representatiοn οf a functiοn if there are mοre than twο pοints οn it.
The graphs coordinate is at (-3, 3)
Lets put the value in all the given function to find the correct function
a. [tex]\rm y = \sqrt{x - 3} + 3[/tex]
Using (-3, 3) as x and y
[tex]\rm 3 = \sqrt{(-3) - 3} + 3[/tex]
[tex]\rm 3 = \sqrt{9} + 3[/tex]
[tex]\rm 3 \neq 3 + 3[/tex]
[tex]\rm y = \sqrt{x - 3} + 3[/tex] is not a function of graph.
b. [tex]\rm y = \sqrt{x+ 3} + 3[/tex]
Using (-3, 3) as x and y
[tex]\rm 3 = \sqrt{-3+ 3} + 3[/tex]
[tex]\rm 3 = \sqrt{0} + 3[/tex]
[tex]\rm 3 = 0 + 3[/tex]
[tex]\rm 3 = 3[/tex]
[tex]\rm y = \sqrt{x+ 3} + 3[/tex] is a function of the given graph.
The other two options are no the functions as cube root is used and the value of x wont satisfy there.
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write an algebraic expression to represent the phrase twelve dollars less than the original price. let p represent the unknown.
Answer:
p=O-12
Step-by-step explanation:
original price:O
12 less than O is "O-12"
therefore p=O-12
The original price of each 6‑day ski pass is reduced by 15% in a sale. In the sale the price of each 6‑day ski pass is $272.
(a) Calculate the original price of each 6‑day ski pass. The price of each 3‑day ski pass is £110 The exchange rate is £1 = $1.70 .
(b) Calculate how much Andrew will save by buying one 6‑day ski pass in the sale rather than two 3‑day ski passes.
Step-by-step explanation:
(a) Let the original price of each 6-day ski pass be x. Then, the sale price of each pass is 0.85x = 272. Solving for x, we have:
0.85x = 272
x = 320
Therefore, the original price of each 6-day ski pass was $320.
(b) Two 3-day ski passes cost 2 x £110 = £220. Converting to US dollars using the exchange rate, we have:
£220 x 1.70 = $374
Therefore, Andrew would save:
$374 - $272 = $102
by buying one 6-day ski pass in the sale rather than two 3-day ski passes.
Perceptions of same-sex marriage: In June 2016, a CBS News poll asked a sample of adults worldwide whether it should be legal or not legal for same-sex couples to marry (reported at http://www.pollingreport.com). The opinions of adults worldwide were as follows: 58%, legal; 33%, not legal; and 9%, unsure/no answer.
What type of distribution is this? __________________________
Knowing that 1,280 adults were polled nationwide, how many Americans polled felt that same-sex couples should be allowed to legally marry? __________________________
Answer:
Perceptions of same-sex marriage: In June 2016, a CBS News poll asked a sample of adults worldwide whether it should be legal or not legal for same-sex couples to marry (reported at http://www.pollingreport.com). The opinions of adults worldwide were as follows: 58%, legal; 33%, not legal; and 9%, unsure/no answer.
What type of distribution is this? __________________________
Knowing that 1,280 adults were polled nationwide, how many Americans polled felt that same-sex couples should be allowed to legally marry? __________________________
Step-by-step explanation:
The distribution of opinions on the legality of same-sex marriage worldwide is not described in the prompt, so it is not possible to determine the type of distribution. However, it is possible to use the proportions provided to estimate the number of Americans who felt that same-sex couples should be allowed to legally marry.
If 58% of all adults worldwide believe that same-sex marriage should be legal, and 1,280 adults were polled nationwide, we can estimate the number of Americans who hold this opinion as:
0.58 x 1,280 = 742.4
Therefore, an estimated 742 Americans polled felt that same-sex couples should be allowed to legally marry.
OBFW Publishers
Joy Milne of Perth, UK, smelled a "subtle musky odor" on her husband Les that she had never smelled before. At first, Joy
thought maybe the smell was from Les's sweat after long hours of work. But when Les was diagnosed with Parkinson's 6 years
later, Joy suspected the odor might be a result of the disease. Scientists were intrigued by Joy's claim and designed an
experiment to test her ability to "smell Parkinson's." Joy was presented with 12 shirts, each worn by a different person, some of
whom had Parkinson's and some of whom did not. The shirts were given to Joy in random order, and she had to decide whether
each shirt was worn by a Parkinson's patient or not. Joy identified 11 of the 12 shirts correctly. If we assume that Joy was just
guessing, she would have probability 1/2 of correctly identifying each shirt.
(a) Find the probability that Joy would identify at least 11 shirts correctly by random guessing.
Round your answer to 4 decimal places.
Leave your answer in decimal form.
about us
careers
the probability of indentifying at least 11 shirts correctly by random guessing is 0.0002
What is Probability?The ratio of favaourable outcomes to all possible outcomes of an event is known as the probability. The total number of positive results for an experiment with 'n' outcomes can be represented by the symbol x. The probability of an occurrence can be calculated using the following formula.
Probability(Event) = Positive Results/Total Results = x/n
Total no.of event=12
the probability that Joy will identify at least 11 shirts correctly by random guessing=
P(X≥11)=P(X=11)+P(X=12)
=¹²C₁₁(½)¹(½)¹¹+¹²C₁₂×(½)¹²(½)⁰
=12×½×(1/2)¹¹+(½)¹²
=0.00024414062≈0.0002
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THE FIRST ANSWER GETS BRAINLIEST AND FIVE STARS!
Parallelogram ABCD is a rhombus with measure EBC = 36. What is the measure of DAE?
picture below
CAN SOMEONE HELP WITH THIS QUESTION?✨
The base of the triangle is decreasing at a rate of 36/19 cm/min when the altitude is 9.5 cm and the area is 94 sq cm.
What does calculus' chain rule mean?We can differentiate composite functions using the chain rule in calculus. Any function that is created by fusing two or more other functions is referred to as a composite function. According to the chain rule, if y = f(g(x)), and f and g are both differentiable functions, then the derivative of y with respect to x is given by:
dy/dx = f'(g(x)) * g'(x)
Given that, the altitude is 9.5 cm and the area is 94 sq cm.
The area of the triangle is given as:
A = 1/2(b)(h)
Differentiating both sides with respect to time we have:
dA/dt = 1/2[(db/dt)(h) + b(dh/dt)
Now,
dA/dt = 2 and dh/dt = 2.
Substituting the values we have:
2 = (1/2) * (db/dt * 9.5 + b * 2)
4 = db/dt * 9.5 + 2b......(1)
Using the area of triangle we know that:
Area = (1/2) * b * h
94 = (1/2) * b * 9.5
b = 20
Substituting the value of b in equation 1 we have:
4 = db/dt * 9.5 + 40
db/dt = - 36/19 cm/min
Hence, the base of the triangle is decreasing at a rate of 36/19 cm/min when the altitude is 9.5 cm and the area is 94 sq cm.
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A pension fund manager decides to invest a total of at most $40 million in U.S. Treasury bonds paying 6% annual interest and in mutual funds paying 8% annual interest. He plans to invest at least 5$ million in bonds and at least 15$ million in mutual funds. Bonds have an initial fee of $100 per million dollars, while the fee for mutual funds is $200 per million. The fund manager is allowed to spend no more than $7000 on fees. How much should be invested in each to maximize annual interest? What is the maximum annual interest?
The amount that should be invested in Treasury bonds is $___ million and the amount that should be invested in mutual funds is $__ million.
The maximum annual interest is $___
Answer:
Let x be the amount invested in Treasury bonds and y be the amount invested in mutual funds. Then we have the following constraints:
x + y ≤ 40 (total investment cannot exceed $40 million) x ≥ 5 (at least $5 million must be invested in Treasury bonds) y ≥ 15 (at least $15 million must be invested in mutual funds) 100x + 200y ≤ 7000 (total fees cannot exceed $7000)
The objective is to maximize the annual interest, which is given by:
0.06x + 0.08y
We can solve this problem using linear programming. The feasible region is a polygon with vertices at (5, 15), (5, 35), (30, 10), and (40, 0). We evaluate the objective function at each vertex:
At (5, 15): 0.06(5) + 0.08(15) = 1.2At (5, 35): 0.06(5) + 0.08(35) = 2.6At (30, 10): 0.06(30) + 0.08(10) = 2.8At (40, 0): 0.06(40) + 0.08(0) = 2.4
The maximum value of the objective function is 2.8, which occurs at (30, 10). Therefore, the amount that should be invested in Treasury bonds is $30 million and the amount that should be invested in mutual funds is $10 million.
The annual interest earned is 0.06(30) + 0.08(10) = $2.8 million.
Step-by-step explanation:
can anyone help with this triangle question
Step-by-step explanation:
Set it up as a ratio:
14 is to (14 +6) as 21 is to ?
14/20 = 21/?
? = 21 * 20 / 14 = 30 units
I will mark you brainiest!
Are the two triangles on the coordinate plane congruent?
A) No
B) Yes
Answer:
No.
Step-by-step explanation:
Given two triangles on a coordinate plane, you can check whether they are congruent by using the distance formula to find the lengths of their sides. If three pairs of sides are congruent, then the triangles are congruent by the above theorem.
Over here, they aren't congruent by the SSS.
draw a new of a square pyramid for which the base is 2 units long and the height of each triangular face is 5 units>
After answering the provided question, we can conclude that slant height of pyramid [tex]= \sqrt((2/2)^2 + 5^2) = \sqrt(29) = 5.39 units.[/tex]
What exactly is a pyramid?A pyramid is a polygon formed by connecting points known as bases and polygonal vertices. For each hace and vertex, a triangle known as a face is formed. A cone with a polygonal shape. A pyramid with a floor and n pyramids has n+1 vertices, n+1 vertices, and 2n edges. Every pyramid is dual in nature. A pyramid contains three dimensions. A pyramid is made up of a flat tri face and a polygonal base that come together at a single point known as the vertex. A pyramid is formed by connecting the base and peak. The edges of the base form triangle faces known as sides, which connect to the top.
/\
/ \
/ \
/______\
5
|
|
|
|
|
2
The square pyramid in the diagram above has a two-unit-long square base and four five-unit-high triangular faces. The Pythagorean theorem can be used to calculate the slant height of each triangular face:
slant height [tex]= \sqrt((2/2)^2 + 5^2) = \sqrt(29) = 5.39 units.[/tex]
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spinner is divided into seven equal sections numbered 1 through 7 If the spinner is spun twice, what is the theoretical probability that it lands on 2 and then an odd number?
A) 1/49
B) 4/49
C) 1/7
D) 4/7
Answer:
B is correct
Step-by-step explanation:
If it is spun twice then the probability of it landing on 2 and then an odd number is:
Pr(2,1) or Pr(2,3) or Pr(2,5) or Pr(2,7)
1/49 * 4
4/49
I give brainliest for the answer
The intersection of two parallel lines; x = 10 metres.
Describe another angle using an example.Alternate angles are created when two parallel lines are intersected by a transversal. Have a look at the given illustration; the two parallel lines are EF and GH. When a transversal splits two parallel lines, the alternate angles are equal.
The alternate interior angles are equal because of the parallel lines characteristic.
Angle STQ (denoted as 2x+10) and angle RQS are hence equal. Angle QRP (shown as x+20) and angle RQS are likewise equal.
Setting these two angles equal to each other, we can get:
x+20 = 2x+10
Simplifying this equation, we get:
x = 10.
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The profit (in thousands of dollars) from the expenditure of x thousand dollars on advertising is given by P(x)=1000+32x-2x2. Find the marginal profit at the following expenditures.
The marginal profit at the following expenditures for $8000 is 0 for $6000 is 8 for $12,000 is -16 and for $20,000 is -48.
When one more unit is produced and sold, a company or individual will make a profit known as marginal profit. The additional expense or profit made while manufacturing the next unit is referred to be marginal. Whereas marginal cost is the additional expense for manufacturing one extra unit, marginal product is the additional income received.
The difference between marginal cost and marginal product is known as marginal profit (also known as marginal revenue). Managers can utilise margin analysis to help them decide whether to increase output, reduce production, or halt production completely, a decision known as the shutdown point.
we have,
P(x)= 1000+32x - 2x²
Formula for derivative of function:
[tex]f'(x) = \lim_{h \to 0} \frac{f(x+h)-f(x)}{h}[/tex]
Finding the derivative,
P(x+h) = 1000 + 32(x+h) - 2(x+h)²
P(x+h) = -2x² -4xh - 2h² + 32x + 32h + 1000
P(x+h) - P(x) = h(-4x - 2h + 32)
P'(x) = -4x + 32
Finding derivatives for given values of x is,
P'(8) = -4(8) + 32 = 0
P'(6) = -4(6) + 32 = 8
P'(12) = -4(12) + 32 = -16
P'(20) = -4(20) + 32 = -48
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Complete question:
The profit (in thousands of dollars) from the expenditure of x thousand dollars on advertising is given by P(x)= 1000+32x - 2x². Find the marginal profit at the following expenditures.
a. $8000
b. $6000
c. $12,000
d. $20,000
6TH GRADE MATH IS THIS CORRECT??
Answer:
Step-by-step explanation:
y2-y1/x2-x1
-7-(-19)/-2-1
12/-2
-6
The slope is -6
PLEASE HELP (Will give brainliest to the first person to answer and the grid goes up by 250s and across by 0.5s)
The following graph represents the distance a commercial airplane travels over time, at cruising speed and an altitude of 35,000 feet. In fact, the distance the airplane travels at cruising speed is directly proportional to the time it travels. What is the cruising speed of the airplane? In your answer, use complete sentences to describe how you found the speed.
1,567 - 2,1134 - 3,1701 - 4, 2268 - 5,2268
By analyzing the relationship between the distance traveled and the time taken from the given graph, we determined that the cruising speed of the airplane is 567 units of distance per 1 unit of time.
To find the cruising speed of the airplane, we can analyze the given graph and observe the relationship between the distance traveled and the time taken.
Looking at the data points provided, we see that the distance traveled is directly proportional to the time taken. This means that for every unit increase in time, there is a corresponding increase in the distance traveled.
Let's consider the first two data points: (1,567) and (2,1134). The time difference between these two points is 2 - 1 = 1, and the distance traveled difference is 1134 - 567 = 567.
Since the distance traveled is directly proportional to time, we can conclude that the speed of the airplane is equal to the distance traveled divided by the time taken. In this case, the speed would be 567 units of distance per 1 unit of time.
Now, let's calculate the cruising speed using the other data points as well:
(2,1134) - (1,567) = 1134 - 567 = 567 units of distance per 1 unit of time
(3,1701) - (2,1134) = 1701 - 1134 = 567 units of distance per 1 unit of time
(4,2268) - (3,1701) = 2268 - 1701 = 567 units of distance per 1 unit of time
(5,2268) - (4,2268) = 2268 - 2268 = 0 units of distance per 1 unit of time
We can see that for each time interval, the distance traveled is always 567 units. Therefore, we can conclude that the cruising speed of the airplane is 567 units of distance per 1 unit of time.
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find any critical numbers of the function.
Answer:
(2, -4)
Step-by-step explanation:
[tex]{ \sf{f(x) = {x}^{3} - {3x}^{2} }} \\ { \sf{ {f}^{l}(x) = {3x}^{2} - 6x }} \\ \\ { \sf{0 = x(3x - 6)}} \\ { \sf{0 = 3x - 6}} \: \: \: \: \: \\ { \sf{3x = 6}} \\ { \sf{x = 2}}[/tex]
For x = 2
[tex]{ \sf{f(2) = {2}^{3} - 3 {(2)}^{2} }} \\ { \sf{f(2) = 8 - 12}} \\ { \sf{f(2) = - 4}}[/tex]
Point is (2, -4)
• Can you stop checking for factor pairs when you find a pair
that repeats? Explain.
Yes, you can stop checking for factor pairs when you find a pair that repeats.
What are factor pair rules?A factor pair is defined in mathematics as a set of two factors that, when multiplied together, produce a specific product. In other words, it is a set of two numbers that we multiply to get a product. For example, in the multiplication statement, 6 7 = 42, 6 and 7 is one of the factor pairs that gives us the product 42.
This is due to the fact that each number has a unique set of factors. When you find a factor pair that repeats, you know you've found all of the factors of that number. Any additional pairs you find will simply be a permutation of the same factors you've already discovered.
Consider the number 24 as an example. Its components are as follows:
1, 2, 3, 4, 6, 8, 12, 24
When looking for factor pairs, we begin with 1 and 24, then move on to 2 and 12, 3 and 8, and finally 4 and 6. We now have all of the factors of 24 because we discovered a pair (4, 6) that repeats the same factors as an earlier pair (6, 4).
As a result, once you find a pair of factors that repeats, you can be confident that you have discovered all of the factors of the number you are investigating.
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Part y Wa g on, Inc., provides musical entertainment at weddings, dances, and various other functions. The company performs adjusting entries monthly but prepares closing entries annually on December 31. The company recently hired Jack Armstrong as its new accountant. Jack’s first assignment was to p re p are an income statement, a statement of retained earnings, and a balance sheet usin g an adjusted trial balance given to him by his predecessor, dated December 31, the current year.
From the ad j usted trial balance, Jack p re p ared the followin g set of financial statements.
Preparation of a Corrected set of Financial Statements :
Income Statements :
PARTY WAGON .INC
INCOME STATEMENT
FOR THE YEAR ENDED DECEMBER 31
CURRENT YEAR
Party Revenue Earned
156,000
Total Revenue
156,000
Expenses :
Insurance Expenses
2,160
Office Rent Expense
14,400
Supplies Expense
1,440
Salary Expense
90,000
Repair and Maintainence expense
2,400
Travel Expense
7,200
Miscellaneous Expense
4,320
Interest Expense
5,280
Depreciation - Van
9,600
Depreciation -Music and Equipment
8,400
Total Expenses
145,200
Income Before Income Tax
10,800
Less : Income Tax Expense
2,400
Net Income
8,400
How to explain the financial statementJack included balance sheet accounts in the income statement, therefore the corrected income statement consisting of revenue and expenses accounts is provided above.
Statement of Retained Earnings :
Retained Earnings (As per adjusted trial balance) 18,000
Add : Net Income 8,400
Less : Dividends (1,200)
Retained Earnings Dec 31, Current Year 25,200
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Find a vector x orthogonal to the row space of A, and a vector y orthogonal to column space, and a vector z orthogonal to the nullspace: A = [1 2 1 2 4 3 3 6 4].
A vector x orthogonal to the row space of A, and a vector y orthogonal to column space, and a vector z orthogonal to the null space. The orthogonal vector is :
A = [tex]\left[\begin{array}{ccc}1&2&1\\2&1&0\\1&-2&2\end{array}\right][/tex]
The orthogonal complement of the subspace V contains any vector perpendicular to V. This orthogonal subspace is denoted V⊥. (pronounced "V perp").
By this definition, null space is the orthogonal complement of row space. Every x perpendicular to the line satisfies Ax = 0 and lies in null space.
vice versa. If v is orthogonal to null space, it must be in row space. Otherwise, we can add this v as an extra row of the matrix without changing its null space. The rice space will become larger, breaking the rule of r+(n−r) = n.
The column space extent of A. These two vectors are the basis of col(A) , but they are not normalized.
In this case, the columns of A are already orthonormal, so you don't need to use the Gram-Schmidt procedure. To normalize a vector and then divide it by its norm:
[tex]\left[\begin{array}{ccc}1&2&1\\2&4&3\\3&6&4\end{array}\right][/tex]
and the vector after orthogonal process is:
[tex]\left[\begin{array}{ccc}1&2&1\\2&1&0\\1&-2&2\end{array}\right][/tex]
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The sides of a triangle have lengths
7.5,11
, and
x
. If
x
is an integer, what is the least possible value of
x
? A. 1 B. 2 C. 3 D. 4 E. 5
If x is an integer, the least possible value of x is 4. So the option D is correct.
The triangle's third side should be less than the sum of the other two sides and more than the difference of the other two sides.
11 - 7.5 < x < 11 + 7.5
Simplify
3.5 < x < 18.5
So the value of the x is between 3.5 and 18.5.
From the option the value 4 and 5 lies between 3.5 and 18.5.
As we have to determine the least possible value of x, so the value of x should be 4. So the option D is correct.
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The complete question is:
The sides of a triangle have lengths 7.5, 11, and x. If x is an integer, what is the least possible value of x?
A. 1
B. 2
C. 3
D. 4
E. 5
Cost, revenue, and profit are in dollars and x is the number of units.
Suppose that the total revenue function is given by
R(x) = 47x
and that the total cost function is given by C(x) = 100 + 30x + 0.1x2.
(a) Find P(100).
P(100) =
(b) Find the marginal profit function MP.
MP =
(c) Find MP at x = 100.
MP(100) =
Explain what it predicts.
At x = 100, MP(100) predicts that profit will increase by |MP(100)| dollars.
At x = 100, MP(100) predicts that cost will decrease by |MP(100)| dollars.
At x = 100, MP(100) predicts that profit will decrease by |MP(100)| dollars
. At x = 100, MP(100) predicts that cost will increase by |MP(100)| dollars.
(d) Find P(101) − P(100).
$
Explain what this value represents.
The sale of the 101st unit will increase profit by |P(101) − P(100)| dollars.
The sale of the 100th unit will increase profit by |P(101) − P(100)| dollars.
The sale of the 101st unit will decrease profit by |P(101) − P(100)| dollars.
The sale of the 100th unit will decrease profit by |P(101) − P(100)| dollars.
R(x) = 47x denotes the total revenue function, and C(x) = 100 + 30x + 0.1x2 is the total cost function.
(a) P(100) = -200
(b) MP(x) = 47 - (30 + 0.2x)
(c) MP(100) = -3
(d) P(101) - P(100) = -0.2
(a) P(100) represents the profit made when x=100 units are sold. It can be calculated as follows:
P(x) = R(x) - C(x)
P(100) = R(100) - C(100)
P(100) = [tex]47(100) - (100 + 30(100) + 0.1(100)^2)[/tex]
P(100) = 4700 - 4000 - 100
P(100) = -200
(b) The marginal profit function MP represents the rate of change of profit with respect to the number of units sold. It can be calculated as follows:
MP(x) = R'(x) - C'(x)
MP(x) = 47 - (30 + 0.2x)
(c) MP(100) represents the marginal profit at x=100 units. It can be calculated by substituting x=100 into the marginal profit function:
MP(100) = 47 - (30 + 0.2(100))
MP(100) = 47 - 50
MP(100) = -3
Profit will drop by |MP(100)| dollars at x = 100, according to MP(100).
(d) P(101) - P(100) represents the additional profit made when the 101st unit is sold compared to when the 100th unit is sold. It can be calculated as follows:
P(101) - P(100) = R(101) - C(101) - R(100) + C(100)
P(101) - P(100) =[tex]47(101) - (100 + 30(101) + 0.1(101)^2) - 47(100) + (100 + 30(100) + 0.1(100)^2)[/tex]
P(101) - P(100) = 47 - 30 - 0.2(101) - 47 + 30 + 0.1(100)
P(101) - P(100) = -0.2
The sale of the 101st unit will increase profit by $0.20.
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Write the function in factored form. Check by multiplication.
y = - 4x³ - 16x² +84x
y= (Factor completely.)
Answer:
Step-by-step explanation:
We can factor out a common factor of -4x from the equation:
y = -4x(x² + 4x - 21)
To factor the quadratic expression in the parentheses, we need to find two numbers that multiply to -21 and add to 4. These numbers are 7 and -3:
y = -4x(x + 7)(x - 3)
To check our work, we can multiply the three factors:
y = -4x(x + 7)(x - 3) = -4x(x² + 4x - 21) = -4x³ - 16x² + 84x
So the factored form is y = -4x(x + 7)(x - 3), and the check shows that we have factored the equation correctly.