Step-by-step explanation:
(10 x 6)/2 = 30 + 47 = 77
What is the value of X in circle O below?
Need help on all step by step preferably
Answer:
a. x = 68
b. x = 55
c. x = 18
Step-by-step explanation:
Formula
Inscribed angle = Central angle/2
a.
x = 136/2
x = 68
b.
x = ( 360 - 150 - 100 )/2
= 110/2
x = 55
c.
x = 18
What is the approximate length, in inches of the scrap wood when they are, placed end to end
Answer:
D. 53
Step-by-step explanation:
To calculate total length, just add all those lengths:
5.5 + 6 + (6.5 x 3) + (7 x 2) + 8
5.5 + 6 + 19.5 + 14 + 8
11.5 + 19.5 + 14 + 8
31 + 14 + 8
45 + 8
53
P varies inversely with x. If p=7 and x=8 find the value of p when x=7
When the value of x is 7 the value of p will be equal to 8.
It is given that P varies inversely with x, so we can write that
p=k/x
where k is the proportionality constant.
here we can find the value of k by substituting the value of p and x with 7 and 8 in the relation that is given above, we get:
7=k/8
k=7*8
k=56
we the value of k to be 56 after putting the values in the relation.
Now if x is changed to 7, and k is equal to 56 we can get the value of p by putting the known values in the same relation.
p=k/x
p=56/7
p=8.
Therefore, when the value of x is 7 the value for p will be equal to 8.
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To the nearest whole cubic centimeter, what is the volume of the prism?
The volume of the prism in 120 cubic centimeter.
What is volume?Volume is a measure of the amount of space occupied by a three-dimensional object. It is a scalar quantity that characterizes the "size" or "capacity" of an object in three dimensions.
What is prism?A prism is a three-dimensional geometric shape that has two parallel and congruent bases connected by lateral faces that are typically rectangular or parallelogram-shaped. Prisms are classified based on the shape of their base, such as rectangular prisms, triangular prisms, pentagonal prisms, hexagonal prisms, and so on. The lateral faces of a prism are perpendicular to the bases, and the bases are usually parallel to each other.
According to the given information:
Given the measures of prism is length = 8cm, breadth = 6 cm, height = 5 cm
The formula for volume of prism = 1/2 l*b*h
= 1/2 8*6*5
= 120 cubic centimeter
Hence the volume of prism is 120 cubic centimeter.
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Francium is a radioactive element discovered by Marguerite Perey in 1939 and named after her country. Francium has a half-life of 22 minutes.
a) Write an exponential function that models the mass how many grams remain from a 480-gram sample after t minutes.
b) How many grams remain after 2 hours?
After 2 hours, approximately 4.38 grams of Francium remain from the 480-gram sample.
What is Algebraic expression ?
An algebraic expression is a combination of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. It may contain one or more terms, with each term separated by a plus or minus sign. Algebraic expressions are used in algebra to represent mathematical relationships and formulas.
a) To write an exponential function that models the mass of Francium remaining after t minutes, we can use the formula:
N = N0 * [tex](1/2)^{(t / t1/2)}[/tex]
where N is the amount remaining after time t, N0 is the initial amount, t1/2 is the half-life, and (t/t1/2) means raised to the power of t/t1/2.
In this case, the initial amount is 480 grams, the half-life is 22 minutes, and we want to find the amount remaining after t minutes. Therefore, the exponential function that models the mass of Francium remaining after t minutes is:
N = 480 * [tex](1/2)^{t/22}[/tex]
b) 2 hours is equal to 120 minutes. To find how many grams of Francium remain after 2 hours, we can substitute t = 120 into the exponential function we found in part a):
N = 480 *[tex](1/2)^{ (120 / 22) }[/tex] ≈ 4.38 grams
Therefore, after 2 hours, approximately 4.38 grams of Francium remain from the 480-gram sample.
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A workplace gave an "employee culture survey" in which 500 employees rated their agreement with the statement, "i feel respected by those i work for. " rating frequency strongly agree 156 agree 114 neutral 99 disagree 88 strongly disagree 43 the relative frequency of people who strongly agree with the statement is __________
The relative frequency of people who strongly agree with the statement "I feel respected by those I work for" is 0.312, or 31.2%.
This means that out of the 500 employees surveyed, 156 strongly agreed with the statement. To find the relative frequency, you simply divide the number of people who strongly agree by the total number of people surveyed (156/500).
This result suggests that the majority of employees feel respected by their employers, which is a positive sign for the workplace culture.
However, it's important to note that there are still a significant number of employees who either disagree or feel neutral about this statement, indicating that there may be room for improvement in terms of fostering a more respectful and supportive work environment.
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Rita and Jan are working on a school project together. Rita has completed 0.3 of her portion, and Jan has completed a portion as well. Use the model to complete the equation below and find how much of the total project Rita and Jan have completed.
answer the question.
Answer:
rita and john are susseful the job
js school
CAN SOMEONE HELP PLEASE!
A restaurant is serving a special lunch combo meal that includes a drink, a main dish, and a dessert. Customers can choose from 5 drinks, 6 main dishes, and 3 desserts.
How many different combo meals are possible?
Select from the drop-down menu to correctly complete the statement.
Customers can create (14, 39, 60, 120) different lunch combo meals.
The equation of the line of best fit for the exam grade per hour studied is
y = 6x + 60. What is the residual for 1 hours of studying?
The predicted exam grade for 1 hour of studying is 66. Therefore the residual for 1 hours of studying can be calculated as Residual = Actual Exam Grade - 66.
To find the residual for 1 hour of studying, we first need to determine the predicted exam grade and compare it to the actual exam grade for that specific data point.
Using the line of best fit equation y = 6x + 60, we can find the predicted exam grade for 1 hour of studying:
y = 6(1) + 60
y = 6 + 60
y = 66
So, the predicted exam grade for 1 hour of studying is 66. To calculate the residual, you need the actual exam grade for 1 hour of studying. If that information is not provided, the residual cannot be calculated. If the actual grade is provided, subtract the predicted grade from the actual grade to find the residual:
Residual = Actual Exam Grade - Predicted Exam Grade
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4 Find the value xa where the function is discontinuousFor the point of discontinuity, give (a) f) if it exists. (b) lm (0) Im . () im 16), and (ej identity which conditions for continuity are not man -O (Use a coma o separate answers as needed Select the choice below and necessary, tal in the trawer box within your choice ОА ка) OB) is undefined (b) Select the choice below and necessary, tu in the answer box within your chale ΟΑ. lim) OB lim does not exist
So, the answer is:
(a) f(x) does not exist at xa = 16.
(b) lim f(x) as x approaches 16 does not exist.
(c) None of the conditions for continuity are met at xa = 16.
To find the value of xa where the function is discontinuous, we need to look for any points where the function is undefined or where the left and right limits of the function are not equal.
(a) From the given information, we know that the function is undefined at xa = 16. So, this is the point of discontinuity.
(b) To find the left and right limits at xa = 16, we need to approach the point from both sides of the function. So,
lim f(x) as x approaches 16 from the left (denoted as lim-) = Im = 0
lim f(x) as x approaches 16 from the right (denoted as lim+) = Im = 16
Since the left and right limits are not equal, the limit as x approaches 16 does not exist. So,
lim f(x) as x approaches 16 (denoted as lim) does not exist.
(c) To determine which conditions for continuity are not met, we need to check if the function satisfies the three conditions for continuity at xa = 16.
i) The function must be defined at xa = 16. Since the function is undefined at xa = 16, this condition is not met.
ii) The left and right limits of the function must exist and be equal at xa = 16. Since the left and right limits are not equal, this condition is not met.
iii) The value of the function at xa = 16 must be equal to the limit of the function at xa = 16. Since the limit does not exist, this condition is also not met.
Therefore, none of the conditions for continuity are met at xa = 16.
So, the answer is:
(a) f(x) does not exist at xa = 16.
(b) lim f(x) as x approaches 16 does not exist.
(c) None of the conditions for continuity are met at xa = 16.
Note: The terms "discontinuous" and "continuity" are used throughout the explanation to describe the concept and the point of interest. The term "function" refers to the given function that we are analyzing.
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Calculate the partial derivative ∂z/∂y using implicit differentiation of e* + sin (5x2) + 2y = 0.
(Use symbolic notation and fractions where needed.)
the partial derivative ∂z/∂y using implicit differentiation of e^z + sin(5x^2) + 2y = 0 is:
To calculate the partial derivative ∂z/∂y using implicit differentiation of e* + sin (5x^2) + 2y = 0, we first need to differentiate both sides of the equation with respect to y.
We get:
d/dy(e^z + sin(5x^2) + 2y) = d/dy(0)
Using the chain rule, the left-hand side becomes:
∂(e^z)/∂z * ∂z/∂y + ∂(sin(5x^2))/∂y + 2
We can simplify this by recognizing that ∂(sin(5x^2))/∂y = 0, since sin(5x^2) does not depend on y. Thus, we are left with:
∂(e^z)/∂z * ∂z/∂y + 2 = 0
Now, we need to solve for ∂z/∂y:
∂z/∂y = -2 / ∂(e^z)/∂z
To find ∂(e^z)/∂z, we differentiate e^z with respect to z, giving:
∂(e^z)/∂z = e^z
Substituting this into the expression for ∂z/∂y, we get:
∂z/∂y = -2 / e^z
Therefore, the partial derivative ∂z/∂y using implicit differentiation of e^z + sin(5x^2) + 2y = 0 is:
∂z/∂y = -2 / e^z
Note that we cannot simplify this any further without knowing the value of z.
To find the partial derivative ∂z/∂y using implicit differentiation for the equation e^z + sin(5x^2) + 2y = 0, we will first differentiate the equation with respect to y, treating z as a function of x and y.
Differentiating both sides with respect to y:
∂/∂y (e^z) + ∂/∂y (sin(5x^2)) + ∂/∂y (2y) = ∂/∂y (0)
Using the chain rule for the first term, we get:
(e^z) * (∂z/∂y) + 0 + 2 = 0
Now, solve for ∂z/∂y:
∂z/∂y = -2 / e^z
So, the partial derivative ∂z/∂y for the given equation is:
∂z/∂y = -2 / e^z
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Given that : f(x) = 2 sec x + tan x 0 ≤ x ≤ 2π
a) Find the derivative.
b) Find the critical numbers.
The derivative of the given function is f'(x) = 2(sec x * tan x) + sec^2 x. b) The critical numbers for the function are x = 0 and x = π.of the given function is f'(x) = 2(sec x * tan x) + sec^2 x.
The critical numbers for the function are x = 0 and x = π.
Derivative and critical numbers,
a) Find the derivative: We're given the function f(x) = 2 sec x + tan x.
To find its derivative, we need to find the derivatives of the individual terms (sec x and tan x) and then add them together.
The derivative of sec x is sec x * tan x. So, for the term 2 sec x, the derivative is 2 * (sec x * tan x).
The derivative of tan x is sec^2 x.
Now, we add both derivatives to find the derivative of f(x): f'(x) = 2(sec x * tan x) + sec^2 x
b) Find the critical numbers: Critical numbers are the points where the derivative of the function is either 0 or undefined.
To find the critical numbers, we'll set f'(x) equal to 0 and solve for x, as well as identify where the derivative is undefined.
First, let's set f'(x) to 0: 0 = 2(sec x * tan x) + sec^2 x
We need to solve this equation for x. It's a bit tricky, so let's rewrite the equation in terms of sin and cos: 0 = 2((1/cos x) * (sin x/cos x)) + (1/cos x)^2
Now let's simplify the equation: 0 = 2(sin x/cos^2 x) + 1/cos^2 x
To eliminate the denominators, we'll multiply through by cos^2 x: 0 = 2(sin x) + cos x
Now, we can use the unit circle to find the values of x in the interval 0 ≤ x ≤ 2π that satisfy this equation: For sin x = 0, x = 0, π For cos x = -2, there's no solution in the given interval because the range of cosine is -1 ≤ cos x ≤ 1.
Therefore, the critical numbers are x = 0 and x = π. Your answer:
a) The derivative of the given function is f'(x) = 2(sec x * tan x) + sec^2 x.
b) The critical numbers for the function are x = 0 and x = π.
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Spencer spent 10 minutes on the phone while routing 5 phone calls. If he routes 28 phone calls, how much time will Spencer have spent on the phone in total? Solve using unit rates
Spencer will be on the phone for 56 minutes in total if he routes 28 calls.
To solve problemUsing unit rates, we can calculate how long Spencer will spend on the phone when routing 28 calls if he spent 10 minutes on the phone while routing 5 calls.
The amount of time spent on each phone call is the unit rate. In this instance, the unit fee is 10 minutes / 5 phone calls = 2 minutes each call.
In order to determine how much time Spencer will spend on the phone when routing 28 calls, we can use this unit rate as follows:
Time on phone = unit rate times the number of calls.Time on phone = 2 minutes per phone call x 28 phone callsTime on phone = 56 minutesTherefore, Spencer will be on the phone for 56 minutes in total if he routes 28 calls.
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in the figure below, AC and BD are diameters of the circle P what is the arc measure of minor BC
The arc measure of minor BC is 155°
How to determine the arc measure of minor BC?An arc is a segment of a circle is defined by two endpoints and the set of points on the curve between them.
The length of an arc is a fraction of the circumference of the circle, and can be calculated using the angle between the two endpoints and the radius of the circle.
We can say that measure of arc BC is m∠ BPC. Also, arc AD is m∠ APD
By Vertical Angles Theorem. That is:
Provided AC and BD are diameters,
m∠ BPC = m∠ APD
m∠ BPC = 155°
Since m∠ BPC = 155°
Therefore, the arc measure of minor BC is 155°
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Complete Question
See attached image
Se estima que el costoanual de manejar cierto auto nuevo está dado por la fórmula C= 0. 35m + 2200, donde m representa el número de millas recorridas por año y C es el costo en dólares. Juana compró ese auto y decide presupuestar entre $6400 y $7100 para costos de manejo del año siguiente. ¿Cuál es el intervalo correspondiente de millas que ella puede manejar su nuevo auto? *
El intervalo correspondiente de millas que Juana puede manejar su nuevo auto está entre 10,000 y 14,000 millas.
How many miles can Juana drive her new car within the given budget range?Para determinar el intervalo correspondiente de millas que Juana puede manejar su nuevo auto, podemos resolver la fórmula del costo anual en términos de la variable m (millas recorridas por año). Dado que el costo anual está entre $6400 y $7100, podemos establecer la siguiente desigualdad:
6400 ≤ 0.35m + 2200 ≤ 7100
Restando 2200 en los tres lados de la desigualdad, obtenemos:
4200 ≤ 0.35m ≤ 4900
Dividiendo por 0.35 en los tres lados, obtenemos:
12000 ≤ m ≤ 14000
Por lo tanto, Juana puede manejar su nuevo auto en un intervalo de millas que va desde 12000 millas hasta 14000 millas por año.
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The label of a can represents the lateral surface area of a cylinder. what is the lateral surface area of a can of beans with a diameter of 7 cm and a height of 11 cm?
The lateral surface area of a cylinder is the area of the sides of the cylinder, not including the top or bottom. In the case of a can of beans, the label that wraps around the can represents this lateral surface area.
To find the lateral surface area of the can, we need to use the formula for the lateral surface area of a cylinder: LSA = 2πr*h, where r is the radius of the base of the cylinder and h is the height of the cylinder.
Since we are given the diameter of the can (7 cm), we need to divide it by 2 to get the radius: r = 7/2 = 3.5 cm. The height of the can is given as 11 cm.
Now we can plug these values into the formula to find the lateral surface area of the can: LSA = 2π(3.5)(11) ≈ 242.95 cm².
So the lateral surface area of the can of beans is approximately 242.95 cm². This is the area of the sides of the can that the label would wrap around.
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Samantha is using a 2-liter pitcher to serve lemonade to 10 of her friends. How many times will she need to fill the pitcher in order to serve each friend 400 milliliters of lemonade
Which list correctwhich list correctly identifies the steps to solving a word problem?ly identifies the steps to solving a word problem?
There is no one definitive list of steps to solving a word problem, as different types of problems may require different approaches.
However, a general set of steps that can be useful in solving many word problems is:
1. Read the problem carefully to understand what it is asking.
2. Identify the relevant information and the unknown quantity you need to find.
3. Translate the problem into an equation or set of equations that relate the given information to the unknown quantity.
4. Solve the equation(s) to find the value of the unknown quantity.
5. Check your answer to make sure it makes sense in the context of the problem.
Additional steps or variations on these steps may be necessary depending on the specific problem, but this general framework can be a useful starting point.
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a qualitative researcher studied womens decisions to delay birth until their late 30s. initial participants referred other women who had made similar decisions. what type of sampling approach i sbeing used with such referrals
The sample is being used with such referrals of a qualitative researcher studied women's decision to delay childbearing until their late 30s is Snowball, option C.
A non-probability sampling technique called snowball sampling entails the recruitment of new units by existing units to make up the sample. Research regarding people with certain characteristics who would be hard to find otherwise can benefit from snowball sampling (e.g., people with a rare disease).
Snowball sampling, sometimes referred to as chain sampling or network sampling, starts with one or more research participants. Following then, it proceeds based on recommendations from those individuals. This procedure is repeated until the required sample is obtained or a saturation point is reached.
The selection is based on a variety of factors, including:
A minimum of five years must have passed from the beginning of the relationship.Now the pair must cohabitate.The pair must reside in a specific region.The pair must be able to provide examples of changes or difficulties they have faced together (e.g., long-distance, illness or loss of a loved one).Learn more about Snowball sample:
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Complete question;
A qualitative researcher studied women's decision to delay
childbearing until their late 30s. Initial study participants
referred friends who had made similar decisions. What type
of sample is being used with such referrals?
A.Convenience
B.Volunteer
C.Snowball
D. Purposive
y were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. find the probability that
The value is calculated by dividing the total number of occurrences by 200 favourable examples that do not possess a college degree is 0.33 is the determined probability value.
The favourable number of cases is 200.
The total number of cases is 600.
The calculation of the required probability is,
Probability = Favourable cases Total number of cases 200 600 = 0.33
Occurrences refer to events or incidents that happen in a particular time or place. These events can be both positive and negative and can occur in various contexts, such as personal experiences, historical events, natural phenomena, and scientific observations.
Occurrences can be significant or insignificant, depending on their impact on individuals or society as a whole. Some occurrences may be routine and expected, while others may be unexpected and unpredictable. The study of occurrences is important in many fields, including history, sociology, psychology, and environmental science. By analyzing past occurrences, researchers can gain insights into patterns of behavior and trends that can inform future decisions and policies.
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Complete Question:-
The employees of a company were surveyed on questions regarding their educational background (college degree or no college degree) and marital status (single or married). Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company does not have a college degree is:
A mover notes the weights of a table and 4 chairs and records t+4C >_100 on his invoice. What is he communicating?
The choices are,
A. The table and 4 chairs each weigh more than 100 pounds.
B. The table and 4 chairs weigh at most 100 pounds.
C. The table and 4 chairs weigh around 100 pounds, give or take a little.
D. The table and 4 chairs at
least 100 pounds
The mover is communicating that the weight of the table and 4 chairs combined, represented as t+4C, is greater than or equal to 100 pounds.
The expression t+4C represents the total weight of the table and 4 chairs. The mover's invoice states that this total weight is greater than or equal to 100 pounds, which means that the combined weight of the table and chairs is at least 100 pounds. Therefore, the correct answer is D, "The table and 4 chairs weigh at least 100 pounds."
To solve this mathematically, we can use algebraic inequalities. The inequality t+4C >_ 100 can be rearranged as t >_ 100-4C. This means that the weight of the table t must be greater than or equal to 100 minus four times the weight of a single chair C.
If each chair weighs less than 25 pounds, then the total weight of the table and 4 chairs combined will be at least 100 pounds. So D is correct answer.
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You are buying shingles for a roof. Each bundle of shingles will cover 27 square feet. The roof consists of two rectangular parts, and each 70 feet by 30 feet. How many bundles of shingles do you need?
Answer:
156 bundles
Step-by-step explanation:
Total area of the roof = 2(70 x 30) = 4200 sf
(4200 sf) / (27sf/bundle) = 155.56 ≈ 156 bundles
Grams of
Peanuts
Grams of
Raisins
14
4
21
6
35
10
Enter the number of grams of peanuts in a bag for every 1 gram of raisins.
For every 1 gram of raisins, there are 3.5 grams of peanuts in a bag.
To find the number of grams of peanuts for every 1 gram of raisins, you need to set up a ratio and solve for the missing value.
1. Set up the ratio: grams of peanuts / grams of raisins.
2. You are given three sets of values: (14, 4), (21, 6), and (35, 10).
For the first set (14, 4):
3. Calculate the ratio: 14 grams of peanuts / 4 grams of raisins = 3.5 grams of peanuts per 1 gram of raisin.
For the second set (21, 6):
4. Calculate the ratio: 21 grams of peanuts / 6 grams of raisins = 3.5 grams of peanuts per 1 gram of raisin.
For the third set (35, 10):
5. Calculate the ratio: 35 grams of peanuts / 10 grams of raisins = 3.5 grams of peanuts per 1 gram of raisin.
Your answer: For every 1 gram of raisins, there are 3.5 grams of peanuts in a bag.
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A triangular pane of glass has a height of 32 inches and an area of 256 square inches. What is the length of
the base of the pane?
The length of the base of the pane is
inches.
The length of the base is 16 inches.
To find the length of the base of the triangular pane of glass, we can use the formula for the area of a triangle which is:
Area = (1/2) x base x height
We are given that the height of the pane is 32 inches and the area is 256 square inches. Substituting these values into the formula, we get:
256 = (1/2) x base x 32
To isolate the base, we can divide both sides by (1/2) x 32, which simplifies to 16. This gives us:
256 ÷ 16 = base
Simplifying the left side of the equation, we get:
16 = base
Therefore, the length of the base of the pane is 16 inches.
In summary, the triangular pane of glass has a height of 32 inches and an area of 256 square inches. To find the length of the base, we use the formula for the area of a triangle and solve for the base.
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Maddy is an event coordinator who helps
raise money for a children's hospital. At
last year's event, she sold 1200 tickets at
$8 each.
Part A: This year Maddy will reduce ticket
prices by 25%. What will be the price of a
new ticket? Explain your reasoning.
D
Part B: Based on the new price, how many
more tickets will Maddy need to sell to
raise the same amount of money as last
year? Explain your reasoning.
The price of a new ticket after reducing the ticket price by 25% is $6. Maddy will need to sell 400 more tickets this year to raise the same amount of money as last year.
Number of tickets sold = 1200
Cost of each ticket = $8
Part A:
If Maddy lowers ticket costs by 25%, The price of a new ticket will be:
Ticket price = $8 - (25% of $8)
Ticket price = $6
The New ticket price will be calculated by multiplying 0.75 for reducing the 25% tickets
New ticket price = $8 x 0.75 = $6
Part B:
To find how many tickets Maddy requires to sell to equal the same amount of money collected in the previous year:
Total revenue = total number of tickets x Ticket price
1200 tickets x $8 per ticket = $9,600
= $9,600 / $6
= 1,600
Total tickets need to sell = 1600-1200 = 400
Therefore we can conclude that Maddy will need to sell 400 more tickets this year.
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Pls help me with this question quick
Based on the equation, when Lisa sells 24 copies of Math is Fun, her total pay will be $3140.
How to calculate the amountThe equation relating P to N is:
P = 1700 + 60N
This is because her base salary is $1700, and she earns an additional $60 for each copy of Math is Fun she sells.
In order to find her total pay if she sells 24 copies of Math is Fun, we simply need to substitute N = 24 into the equation:
P = 1700 + 60(24)
P = 1700 + 1440
P = 3140
Therefore, if Lisa sells 24 copies of Math is Fun, her total pay will be $3140.
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for each pair of numbers verify lcmm,n∙gcdm,n=mn. 60,90 220,1400 3273∙11, 23∙5∙7
lcmm,n∙gcdm,n=mn is verified for all three pairs of numbers. We can verify lcmm,n∙gcdm,n=mn for each pair of numbers as follows:
For 60 and 90:
lcm(60,90) = 180
gcd(60,90) = 30
180 * 30 = 5400
60 * 90 = 5400
Since both sides of the equation are equal to 5400, the equation is verified.
For 220 and 1400:
lcm(220,1400) = 3080
gcd(220,1400) = 20
3080 * 20 = 61600
220 * 1400 = 61600
Since both sides of the equation are equal to 61600, the equation is verified.
For 3273∙11 and 23∙5∙7:
lcm(3273∙11, 23∙5∙7) = 15015
gcd(3273∙11, 23∙5∙7) = 161
15015 * 161 = 2418315
3273∙11 * 23∙5∙7 = 2418315
Since both sides of the equation are equal to 2418315, the equation is verified.
Therefore, lcmm,n∙gcdm,n=mn is verified for all three pairs of numbers.
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3 Let a represent a positive number and let b represent a negative number. Tell whether each statement is True or False. A. The difference (a - b) could be negative. True False True False b. The difference (b - a) cannot be positive. C. The sum (a + b) could be positive. True False d. The sum (b + a) must be negative. True False
Using various laws of integers we can say that if a is a positive integer and b is a negative integer, statement A is False, B is True, C s True and D is false.
Here we are given that a is a positive integer while b is a negative integer.
A. The statement says that the difference (a - b) could be negative.
According to the subtraction law of integers, when a negative number is subtracted from a positive number, that is we have
2 - (-3)
Here the 2 minus signs will make a positive to give
2 + 3 = 5
Hence (a - b) will be a positive number since b is negative.
B.
The difference (b - a) cannot be positive.
Since a is positive and b is negative, according to the above example we will get
-3 - 2 = -5
Hence it is true that the difference (b - a) can't be positive.
C.
The sum (a + b) could be positive.
Here, we can see that a is a positive number while b is a negative number. In the light of above example, we will get
2 - 3 = -1
Here the sum is nagative as 3 > 2, but if we had
3 + (-2), then the answer would have been 1. Hence (a + b) can be positive. Hence the statement is true.
D.
The sum (b + a) must be negative.
Integers have commutative properties. Hence a + b = b + a
Hence if a + b can be positive, then b + a can also be positive.
Hence the statement is False.
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A new sign is being designed for the cityâs skate park. Knowing the exact angles is necessary for fitting the sign where it will hang. The architect started to write in the angles, but went home sick before she could finish. It is up to you to fill in the missing angles. For 4 of the 8 missing angles, explain your answer
Using trigonometry, we can solve for the missing angles to find them as 18.43°, 45°, 45°, and 18.43°.
The sign is mounted on a sloped surface, which means that we'll need to use some trigonometry to find the missing angles.
Let's concentrate on the sign's upper right corner, where the letters x and y are absent from two perspectives. The magnitude of angle x may be determined using trigonometry.
Let's begin by sketching a right triangle that has an angle x. The triangle's two sides may be represented by the sign's vertical and horizontal lines, with the addition of a third side to join the top right corner of the sign to the sloping area below.
Since the sign is an octagon, we know that each interior angle is 135°. Therefore, the measure of angle y must be:
y = 180 - 135 = 45°
Now, let's look at the right triangle that includes angle x. We know that the hypotenuse of the triangle is the sloped surface of the sign, which has a length of 4.5 meters. We also know that the opposite side of the triangle is the height of the sign above the ground, which has a length of 1.5 meters.
Using trigonometry, we can find the measure of angle x by taking the inverse tangent of the opposite side over the adjacent side:
tan(x) = opposite/adjacent = 1.5/4.5 = 1/3
x = tan⁻¹(1/3) ≈ 18.43°
Therefore, the measure of angle x is approximately 18.43 degrees.
Hence, using trigonometry, we can solve for the missing angles to find them as 18.43°, 45°, 45°, and 18.43°.
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help pls. my mom is mad bc i don’t have this done.
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A = L × B = 7.3cm × 9cm= 65.7cm= 65.7cm × 90m= 5,913m²_______________________________