When AB = AC and A is nonsingular, then the cancellation law holds; is, B = C. The statement is true.
In matrix algebra, the cancellation law is a crucial property to know. It states that if AB = AC, then B = C when A is a nonsingular matrix.
The given statement is true, which means that if AB = AC and A are nonsingular, then B = C. The cancellation law in matrix algebra is a property that helps in solving linear equations involving matrices. It states that if AB = AC and A is a nonsingular matrix, then B = C.
Therefore, we can say that if AB = AC and A is nonsingular, then B = C is true.
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A man in a lighthouse tower that is 30 ft. He spots a ship at sea at an angle of depression of 10°. How far is the ship from the base of the lighthouse?
Answer:
170.16 ft
Step-by-step explanation:
tan10° = 30/x
x = 30x/ tan 10° = 30/0.1763
=170.16 ft
A gas cooker costing 450$
was increased by 10% how much is the gas cooker now
What is the solution to X equals the square root of negative X +6
Answer:
The equation X = √(-X + 6) can be solved using algebraic manipulation. Here are the steps:
Square both sides of the equation to eliminate the square root:
X^2 = -X + 6
Add X to both sides of the equation:
X^2 + X = 6
Rearrange the equation in standard quadratic form:
X^2 + X - 6 = 0
Factor the quadratic equation:
(X + 3)(X - 2) = 0
Use the zero product property to solve for X:
X + 3 = 0 or X - 2 = 0
X = -3 or X = 2
Step-by-step explanation:
Please Answer Quickly I need help
In the given proof the blanks are ΔAED ≅ ΔABC using the AA criteria.
What is reflexive property?Every component of the set is connected to itself, according to the reflexive feature of sets. The reflexive property of congruence is known when the relation specified on a set is congruence, and the reflexive property of equality is known when the relation defined on a set of numbers is equality. When this occurs, the relation can be referred to as a reflexive relation or as a reflexive property being satisfied on that set. In the parts that follow, let's learn more about equality and congruence's reflexive attribute.
Given that angle A is congruent to angle A using the reflexive property.
Thus, ΔAED ≅ ΔABC using the AA criteria.
Hence, in the given proof the blanks are ΔAED ≅ ΔABC using the AA criteria.
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The number of hours,h,worked and the amount of money ,m,earned. I need help I didn't pay attention in class...
what is the question asking? independent and dependent?? if so h is independent and m is dependent. Explanation: Independent is the leader and dependent is the follower, in your question the amount of hours you work depend on the amount of money you make because say for example you can get paid $15 per hour and if you work for 2 days you'll only gain $30 bucks that day. hopefully that makes sense!
If it's not asking for dependent and independent, please reply to comment i'll be more than happy to help .
A medical device company knows that the percentage
of patients experiencing injection-site reactions with the
current needle is 11%. A nurse will collect data by
performing injections with this type of needle until five
people experience injection-site reactions
Is it appropriate to use the geometric distribution to
calculate probabilities in this situation?
• Yes, the geometric distribution is appropriate.
• No. since each trial is not independent of the other
trials.
• No, because it is not looking for the first occurrence
of success.
• No, since the probability of success is not the same
for each of the trials.
Answer:
Yes, the geometric distribution is appropriate.
Step-by-step explanation:
Write ordinary number
Tomorrow, Sunita and Sunil will get married according to Hindu ritual. In Sunil's house, four banana plants have to be fixed in four corners for 'Linga Chauka in such a way that consecutive banana plants should be fixed at equal distances and banana plants in diagonally opposite direction should also be at the equal distances. If the coordinates of any two opposite banana plants are (3, 4) and (7, 2), then find the equation of the line made by the rice flour joining the remaining two opposite banana plants.
The equation of the line made by the rice flour joining the remaining two opposite banana plants is y = 2x - 7.
How to find the equation of the line?We are given the coordinates of two opposite banana plants, (3, 4) and (7, 2). Since the consecutive plants are fixed at equal distances, the other two plants will lie on the perpendicular bisector of the line segment joining (3, 4) and (7, 2).
First, let's find the midpoint of the line segment joining (3, 4) and (7, 2):
Midpoint = ((x1 + x2)/2, (y1 + y2)/2) = ((3 + 7)/2, (4 + 2)/2) = (5, 3)
Find the slope of the line segment joining (3, 4) and (7, 2):
Slope = (y2 - y1)/(x2 - x1) = (2 - 4)/(7 - 3) = -2/4 = -1/2
Now, we can use the point-slope form of a linear equation to find the equation of the line made by the rice flour joining the remaining two opposite banana plants:
y - y1 = m(x - x1)
Here, m is the slope, and (x1, y1) is the midpoint (5, 3):
y - 3 = 2(x - 5)
y - 3 = 2x - 10
y = 2x - 7
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In a class of student 17 like volleyball like basketball and 10 like both games . show in venn-diagram and find the number student who do not like both games
The number of students who do not like both games is 3
What is a Venn Diagram?John Venn popularized the Venn diagram in the 1880s, which is a type of diagram that displays the logical relationship between sets. The illustrations are used in probability, logic, statistics, linguistics, and computer science to demonstrate basic set relationships and to teach rudimentary set theory.
How to solveStudents who like only volleyball=17-10=7
Students who like only basketball=15-10=5
Students who like both sports =10
Students who like one or more sports =7+5+10=22
Students who do not like any sport =25-22=3
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In a class of 25 students, 17 like volleyball, 15 like basketball and 10 like both games. Find the number of students who don't like any of the games.
Help area of a circle
9th
Answer:
C=2πr
Step-by-step explanation:
which statement about equations and expressions is true? an example of an equation is because it shows that two expressions are equal. an example of an expression is because it shows that two equations are equal. an example of an equation is because it is a mathematical phrase represented by numbers, a variable, and an operation. an example of an expression is because it is a mathematical phrase represented by numbers, a variable, and an operation.
The statement that is true about equations and expressions is that an example of an equation is because it shows that two expressions are equal.
While an example of an expression is because it is a mathematical phrase represented by numbers, a variable, and an operation.
An equation is a mathematical statement where two expressions are equal. It's important to note that an equation has an equals sign, so the left side of the equation is equal to the right side of the equation.
Expressions are combinations of numbers, symbols, and operators that represent a value. A symbol or letter that represents a value is a variable. It's important to note that an expression does not have an equals sign, so the value of the expression is not defined.Why is an example of an equation true?An equation can be written in the form x = y. The equals sign indicates that x and y are equal. This means that two expressions, x and y, are equal. Therefore, an equation shows that two expressions are equal.
An example of an equation is 3x + 4 = 10. This equation is an example of an equation because it shows that two expressions, 3x + 4 and 10, are equal. The left side of the equation (3x + 4) equals the right side of the equation (10). Therefore, this statement is true: "An example of an equation is because it shows that two expressions are equal."
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Solve the equation. (Enter your answers as a comma-separated list. Use n as an arbitrary integer. Enter your response in radians. )
csc2(x) + 6 csc(x) − 7 = 0
The solutions to the equation [tex]csc2(x) + 6 csc(x) − 7 = 0 are x = π/2, (2n+1)π/2, (2n+1)π + arcsec(-6)[/tex] and [tex](2n+1)π - arcsec(-6).[/tex]
The equation [tex]csc2(x) + 6 csc(x) − 7 = 0[/tex] can be rewritten as [tex]csc(x)(csc(x) + 6) − 7 = 0[/tex]. Factorizing the equation we have
Now, solving for csc(x) = 0, we have csc(x) = 0. This implies that x = π/2 or (2n+1)π/2, where n is an arbitrary integer.
Similarly, solving for[tex]csc(x) + 6 = 0[/tex], we have csc(x) = -6. This implies that [tex]x = (2n+1)π + arcsec(-6) or (2n+1)π - arcsec(-6)[/tex], where n is an arbitrary integer.
Therefore, the solutions to the equation[tex]csc2(x) + 6 csc(x) − 7 = 0 are x = π/2, (2n+1)π/2, (2n+1)π + arcsec(-6) and (2n+1)π - arcsec(-6).[/tex]
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a man traveled 1/3 of thr distance between 2 cities in 3/4 of an hour
It will take him 2[tex]\frac{1}{4}[/tex] hours to travel the entire distance between the two cities. The solution has been obtained by using the arithmetic operations.
What are arithmetic operations?
All real numbers are thought to be sufficiently described by the four basic operations, sometimes referred to as "arithmetic operations." The mathematical operations quotient, product, sum, and difference follow division, multiplication, addition, and subtraction.
It is given that a man traveled [tex]\frac{1}{3}[/tex] of the distance between 2 cities in [tex]\frac{3}{4}[/tex] of an hour.
So, using the multiplication, if he travels at the same rate, he will cover the entire distance in,
⇒ Time taken = [tex]\frac{3}{4}[/tex] * 3
⇒ Time taken = [tex]\frac{9}{4}[/tex]
⇒ Time taken = 2[tex]\frac{1}{4}[/tex] hours
Hence, it will take him 2[tex]\frac{1}{4}[/tex] hours to travel the entire distance between the two cities.
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Find the equation of the linear function represented by the table below in slope-intercept form.
To calculate b, we can plug one of the points into the equation to solve for b. If we plug in (1,2) we get 2 = 1(1) + b, so b = 1. Therefore, the equation of the linear function is y = x + 1.
To find the equation of the linear function represented by the table, we can use the slope-intercept form of a linear equation, which is y = mx + b. To calculate m, we can take two points on the line and calculate the rise (y2 - y1) over the run (x2 - x1). In this case, we can take the points (1,2) and (3,4). The rise is 2 and the run is 2, so m = 1. To calculate b, we can plug one of the points into the equation to solve for b. If we plug in (1,2) we get 2 = 1(1) + b, so b = 1. Therefore, the equation of the linear function is y = x + 1.
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Jack brought x picks costing $30 each and y shovels costing $40 each. In all he spent 240
The function of given situation is 30x + 40y = 240. The x and y- intercept of function is (8, 0), (0, 6).
To represent this situation, we can use the following function:
f(x, y) = 30x + 40y
where x is the number of picks and y is the number of shovels.
Since the function represents the total amount spent by Jack, we can set it equal to the given amount:
30x + 40y = 240
To find the x-intercept, we can set y = 0 and solve for x:
30x + 40(0) = 240
30x = 240
x = 8
Therefore, the x-intercept is (8, 0), which means that if Jack buys 8 picks and no shovels, he will spend $240.
To find the y-intercept, we can set x = 0 and solve for y:
30(0) + 40y = 240
40y = 240
y = 6
Therefore, the y-intercept is (0, 6), which means that if Jack buys 6 shovels and no picks, he will spend $240.
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_____The given question is incomplete, the complete question is given below:
Jack brought x picks costing $30 each and y shovels costing $40 each. In all he spent 240 write the function to represent this situation. what are the x and y intercepts of function
Change from rectangular to spherical coordinates. (Let rho ≥ 0, 0 ≤ θ ≤ 2π, and 0 ≤ ϕ ≤ π.) (a) (0, −2, 0)
Changing from rectangular to spherical coordinates is: (2, π/2,0)
Spherical Coordinates:
In mathematics, a spherical coordinate system is a coordinate system in three-dimensional space in which the position of a point is specified by three numbers: the radial distance of the point from a fixed origin, the polar angle measured at from a fixed zenith direction, and its Azimuth orthogonal projection on a reference plane passing through the origin and normal to the vertex, measured from a fixed reference direction on this plane.
According to the Question:
To change the coordinates from rectangular to spherical we have to use these formulae:
[tex]A = \sqrt{x^{2} + y^{2} + z^{2} }[/tex]
And, ∅ = arctan (y/x)
θ = [tex]arccos = \frac{z}{\sqrt{x^{2} +y^{2} +z^{2} } }[/tex]
So, the given points is (0,-2,0)
[tex]A = \sqrt{0^{2} + (-2)^{2} + 0^{2} }[/tex]
Or, A = √4
Or, A = 2
And, ∅ = arctan (2/0)
= arctan (∞) = π/2
θ = [tex]arccos = \frac{0}{\sqrt{0^{2} +(-2)^{2} +0^{2} } }[/tex]
⇒ θ = [tex]arccos = \frac{0}{\sqrt{(-2)^{2} } }[/tex]
⇒ θ = arcos (0)
Therefore,
The point becomes: (2, π/2,0)
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1807- This data is going to be plotted on a scatter graph. Length (cm) 42 6 53 14 Cost (£) 125 34 192 58 Choose all of these options that would be suitable for the Length axis. Explain your answer. A B C 0 13.25 26.5 39.75 53 0 20 40 60 0 50 100 150 200 D E F 0 10 20 30 40 50 60 0 5 10 15 20 25 30 35 40 0 6 14 42 53
Option A includes values within the range (6 and 53), so it is suitable. However, it includes decimal values which might not be necessary for this dataset.
What is scatter graph?
A scatter graph, also known as a scatter plot or scatter chart, is a type of graph used to display the relationship between two variables. The graph consists of a set of points that are placed on a coordinate plane, with one variable represented on the horizontal (x) axis and the other variable represented on the vertical (y) axis. Each point on the graph represents a pair of corresponding values for the two variables.
According to the question:
To choose the suitable options for the Length axis, we need to consider the range of values in the dataset. The minimum value for the Length variable is 6, and the maximum value is 53. Therefore, any options that do not include values within this range would not be suitable for the Length axis.
Option A includes values within the range (6 and 53), so it is suitable. However, it includes decimal values which might not be necessary for this dataset.Option B includes values that are all multiples of 20, which may not be the most appropriate interval for this dataset since the data range is relatively small.Option C includes values that are all multiples of 50, which may be too large an interval for this dataset since the maximum value is only 53.Option D includes values that are all multiples of 10, which might be appropriate for this dataset.Option E includes values that are all multiples of 5, which might be appropriate for this dataset.Option F includes all the values in the dataset, which is the most appropriate for this specific dataset.To know more about scatter graph visit:
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A tour company charges a base price of $60 per person but then lowers it by $4 per each additional pers who goes on the tour (up to 8 people). For example, if only one person goes, her ticket is $60, but if t people go, each of their tickets is $56 and if three people go, each of their tickets is $52. Let n be the num of people who go on the tour
Thus, the cost would be $60 + $56 = $116 for a group of two persons and $60 + $52 + $52 = $164 for a party of three for number n.
The pricing structure for the tour company is based on a base price of $60 per person, which is then discounted by $4 for each additional person up to a maximum of 8 people. This means that for a group of 2 people, the price would be $60 + $56 = $116, while for a group of 3 people, the price would be $60 + $52 + $52 = $164.
The pricing structure incentivizes larger groups to go on the tour, as they can benefit from the discounted price per person. However, the discount stops at 8 people, which means that larger groups do not receive any further discounts. This is likely because the tour company may have a limit on the number of people they can accommodate on a single tour.
It is important for customers to be aware of the pricing structure when considering booking a tour with the company. They should also consider the benefits and drawbacks of going with a larger group versus a smaller one, such as the potential for a more personalized experience with a smaller group versus a more social experience with a larger group. Overall, the pricing structure is designed to be fair and encourage group bookings, while also accommodating the needs of the tour company.
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Given u = 3i − 8j and v = −4i + 8j, what is u ⋅ v?
Answer:
-12i - 64j
Step-by-step explanation:
16) During a theater season, New York theatergoers bought 11.7 million tickets for $588.5 million. To the nearest dollar, what was the mean price for a theater ticket in New York???
mean price for a theatre ticket in New York is $ 50.299
Mean can be expressed as the total sum of observations for the total number of observations.
In other words its the sum by the count
It gives the average measure of each entity.
The mean Price is sometimes called Average Price.
Total number of Tickets = 11.7 million
Total Cost = $588.5 million
Mean Price = Total Cost / Total Number of Tickets
= 588.5 million / 11.7 million
= $ 50.299
mean price for a theatre ticket in New York is $ 50.299
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a bookstore is deciding what price it should charge for a certain book. after research, the store finds that if the book's price is dollars (where ), then the number of books sold per month is . what price should the store charge to maximize its revenue?
To maximize the revenue, the bookstore should charge $13 for the book.
Given:
p = book's price in dollars, where
p is less than or equal to 26.
number of books sold per month = 130-5p
Price that maximizes revenue = ?
Revenue = Price × QuantityofUnitsSold
Revenue = p(130-5p)
Revenue = [tex]130p - 5p^2[/tex] , This is quadratic equation so, The vertex of the parabola, which gives the price that maximizes revenue, can be determined by calculating the value of x-coordinate of the vertex.
Let x = p
The formula for the x-coordinate of the vertex is [tex]-b/2a[/tex]
where,
a = -5
b = 130
c = 0
x = [tex]-b/2a=-130/-10 = 13[/tex]
So, to maximize the revenue, the bookstore should charge $13 for the book.
Maximum revenue will be:-
Revenue = Price × QuantityofUnitsSold
Revenue = p(130-5p)
where p = 13
Revenue = (13)(130-5(13))
Revenue = $845
The maximum revenue at (price = 13) will be $845.
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I really need help a.s.a.p
The area of the semicircle that has a radius of 3 kilometers is calculated as: 14.13 square kilometers.
How to Find the Semicircle's Area?To find the area of a semicircle, you can follow these steps:
Recall that a semicircle is half of a circle. Therefore, the formula for the area of a circle can be modified to find the area of a semicircle by dividing the formula by 2.The formula for the area of a circle is A = πr^2, where A is the area, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.To find the area of a semicircle, divide the formula for the area of a circle by 2. Therefore, the formula for the area of a semicircle is A = 1/2(πr^2).The semicircle's area = 1/2(πr²) = 1/2 * (3.14 * 3²)
= 14.13 square kilometers.
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evaluate the function graphically.
find (-3)
The function f(-3) when evaluated graphically has its value to be 4 on the graph
How to Evaluate a Function GraphicallyTo evaluate a function graphically, you need to follow these steps:
Plot the function on a coordinate plane (this is the given graph)Identify the function value from the graphIn this case, the function f(-3) has its value to be 4 on the graph
This means that
f(-3) = 4
Hence, the function has a value of 4
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14 Kawa rolls a fair number cube twice. What is the probability of rolling two 3's if the first roll is a 5? Explain.
Answer:
2/12
Step-by-step explanation:
There is a 1/6 chance of rolling a 3 once because there are six sides and only one 3, double that ratio if your want the probability of rolling that same number twice in a row.
If a ray QT bisects angle RQS, what would be the measure of one of the resulting answers? need answers asap please :)
If a ray QT bisects <RQS, then the measure of one m ∠TQS = 23.5°
Bisector:
In geometry, bisector is the division of something into two equal or equal parts (of the same shape and size). This usually involves a bisector, also called the midline. The most commonly considered bisectors are the bisector (the line passing through the midpoint of a given line segment) and the angle bisector (the line passing through the vertex of the angle, the bisector equal to the angle ).
According to the Question:
Given :
a ray QT bisects <RQS
∠PQR and ∠RQS is a linear pair . It makes and angle 180 degree
m ∠PQR + m ∠RQS = 180
From the diagram,
m ∠PQR = 3x-5, and m ∠RQS= x+1
Substitute the expression and solve for x
m ∠PQR + m ∠RQS = 180
⇒ 3x-5 + x+1 = 180
⇒ 4x -4 = 180
⇒ 4x = 184
⇒ x = 46
Now ,
m ∠RQS = x +1
= 46 +1
= 47
Given QT bisects <RQS. it means QT divides RQS equally
m ∠TQS = m ∠RQS/2
⇒ m ∠TQS = 47/2
⇒ m ∠TQS = 23.5
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Circumference area of circle use 3.14 for pi
The required area and the circumference of the given circle are 19.63 ft² and 15.70 ft respectively.
What is a circle?Simply put, a circle is a rounded shape without any edges or line segments. It has the geometric shape of a closed curve.
The points of the circle are at a fixed distance from the center.
A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called the “center”.
So, the area would be:
= πr²
= 3.14*2.5*2.5
= 19.63495
= 19.63 ft²
The circumference would be:
= 2πr
= 2*3.14*2.5
= 15.70796
= 15.70 ft
Therefore, the required area and the circumference of the given circle are 19.63 ft² and 15.70 ft respectively.
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The table shows the number of hours that jay worked on three days last week
The mean, median, mode, and range of times for the second week are
Mean: 13.857 hours
Median: 14 hours
Mode: 16 and 10 hours
Range: 8 hours
To find the mean, median, mode, and range for the second week, we first need to calculate the new set of values by adding 6 to each entry in the first week.
New set of values for the second week:
16 14 18 12 11 10 16
Mean
To find the mean, we add up all the values in the set and divide by the total number of values
Mean = (16 + 14 + 18 + 12 + 11 + 10 + 16) / 7
Mean = 97 / 7
Mean = 13.857
Therefore, the mean for the second week is 13.857 hours.
Median
To find the median, we need to arrange the values in ascending order:
10 11 12 14 16 16 18
The median is the middle value in the set. Since there are an odd number of values in the set, the median is the fourth value, which is 14.
Therefore, the median for the second week is 14 hours.
Mode
The mode is the value that appears most frequently in the set. In this case, there are two values that appear twice: 16 and 10. Therefore, the set has two modes.
Therefore, the mode for the second week is 16 and 10 hours.
Range
The range is the difference between the highest and lowest values in the set. In this case, the highest value is 18 and the lowest value is 10.
Therefore, the range for the second week is 18 - 10 = 8 hours.
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The given question is incomplete, the complete question is:
We are given set of entries in that the number of hours taken by a group of teammates spent in their first week of training is:
10 8 12 6 5 4 10
Now in the second week the each of the entry is increased by 6 so the data for the second week is given as:
16 14 18 12 11 10 16 . The table shows the number of hours that a group of teammates spent in their first week of training for the track finals. In the second week, they each add 6 hours to their training times. What are the mean ,median ,mode , and range of times for the second week?
What is the image point of (4,8) after a translation right 1 unit and up 5 units?(Explain+Rules)
Answer:
(5, 13)
Step-by-step explanation:
Points (4, 8)
Translation right 1 unit. Meaning x + 1
(4, 8) → (5, 8)
Up 5 units. Meaning y + 5
(5, 8) → (5, 13)
So, the final point at (5, 13)
Martha's family set a goal to earn $7,507.50 in interest in account 2. How long will it take them to meet this goal?
It will take them to meet this goal 10.01 years (or approximately 10 years and 1 month)
To solve this problem, we'll need to use a formula:
Simple interest = Principal × rate × time (in years)
We can rearrange the formula as follows:
Time (in years) = Simple interest / (Principal × rate)
As per the formula, to calculate the time it will take the family to earn the interest, we'll need to know the principal and the rate. These values are not given in the question, so we'll assume that the principal is $10,000 and the interest rate is 7.5 percent (or 0.075 as a decimal).
Simple interest = Principal × rate × time (in years)
$7,507.50 = $10,000 × 0.075 × time (in years)
Divide both sides by $10,000 × 0.075 to isolate the time (in years):
time (in years) = $7,507.50 / ($10,000 × 0.075)
time (in years) = 10.01 years
So, it will take the family 10.01 years (or approximately 10 years and 1 month) to earn $7,507.50 in interest in account 2.
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If the quadrilateral below is a trapezoid, solve for x.
X =
PLEASE HELP
Answer:
x = 7
Step-by-step explanation:
In a trapezoid
each lower base angle is supplementary to the upper base angle on the same side , then
∠ S + ∠ V = 180
8x - 21 + 145 = 180
8x + 124 = 180 ( subtract 124 from both sides )
8x = 56 ( divide both sides by 8 )
x = 7