For the given data, ∅ is the given angle in standard position, terminal side passes through (-9,5) then the exact value of sec∅= ( - √106/ 9 ) in simplest radical form.
As given in the question,
For the given angle ∅ (theta) in standard position:
Terminal side of ∅ is passes through the point ( -9, 5 )
( -9 , 5 ) represents ∅ is in the second quadrant.
In second quadrant sine in positive and cosine is negative.
Base is negative and altitude is positive.
Base = -9
Altitude = 5
Using Pythagoras theorem,
Hypotenuse² = (-9)² + (5)²
⇒ Hypotenuse = √106
cos ∅ = -9 / √106
sec ∅ = 1/ cos ∅
= - √106/9 ( simplest radical form )
Therefore, for the given data, ∅ is the given angle in standard position, terminal side passes through (-9,5) then the exact value of
sec∅= ( - √106/ 9 ) in simplest radical form.
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Use the definition of exponents as repeated multiplication to simplify. Enter only the simplified expression (2/3)^2
The expression (2/3)² when simplified by repeated multiplication is 4/9
How to evaluate the expression?From the question. the expression is given as
(2/3)²
We start by rewriting the expression using repeated multiplication
This in other words means that:
We rewrite the (2/3)² as repeated multiplication
To do this, we apply the exponent rule of indices
This rule states that:
a^m = a * a * a .... in m places
So, we have
(2/3)² = (2/3) x (2/3)
Evaluate the products
(2/3)² = 4/9
Hence, the equivalent expression is 4/9
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i) Factorise 3x^2-13x-10
⇒[tex]3x^{2} -13x-10\\=3x^{2} -15x+2x-10\\=(3x^{2} -15x)+(2x-10)\\=3x(x-5)+2(x-5)\\=(x-5)(3x+2)[/tex]
⇒The answer is (x-5)(3x+2)
Please Help 2
Find (fxg)(x) if f(x)=x2+2+4 and g (x)=x-2
Answer:
x³ - 8
Step-by-step explanation:
A home developer is planning to build h houses with identical floor plans. Each house will have 3 smaller bedrooms that each require 150 square feet of carpet and 1 larger bedroom that requires 270 square feet of carpet.
The required expression is 3h(150) + h(270) which is the correct answer would be an option (D).
What is the algebraic expression?Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.
Since each house will have 3 smaller bedrooms that required 150 square feet of carpet
⇒ 3 × 150
Each house will have 1 larger bedroom that requires 270 square feet of carpet.
⇒ 270
So, (3 × 150 + 270) × h
⇒ 3h(150) + h(270)
Thus, The required expression is 3h(150) + h(270).
Hence, the correct answer would be an option (D).
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The question seems to be incomplete the completed part has been attached below
The average cost per night of a hotel room in New York City is $273 (Smart Money, March 2009). Assume this estimate is based on a sample of 45 hotels and that the sample standard deviation is $65.
Show all work for each solution
a. With 95% confidence, what is the margin of error?
b. What is the 95% confidence interval estimate of the population mean?
c. Two years ago the average cost of a hotel room in New York City was $229. Discuss the change in cost over the two-year period.
With 95% confidence, the margin of error is 19.523, population mean is (253.477, 292.523) and the change in cost over the two-year period is 19.21%.
In the given question,
The average cost per night of a hotel room in New York City(y) = $273
Number of rooms in hotel(n) = 45.
The sample standard deviation(s) = $65
(a.) Now finding the margin of error, with 95%(0.95) confidence.
The formula of margin of error is
ME= [tex]z_{\alpha /2}\times \frac{s}{\sqrt n}[/tex]
Now find the value of [tex]z_{\alpha /2}[/tex].
[tex]\alpha[/tex] = 1-0.95
[tex]\alpha[/tex] = 0.05
[tex]\alpha[/tex]/2 = 0.05/2
[tex]\alpha[/tex]/2 = 0.025
Now the value of [tex]z_{\alpha /2}[/tex]
[tex]z_{\alpha /2}=z_{0.025}[/tex]
From the standard table of z is 2.015.
Now putting the value in formula
ME= 2.015 × 65/√45
ME= 2.015 × 65/6.708
ME= 2.015 × 9.689
ME= 19.523
Hence, with 95% confidence, the margin of error is 19.523.
(b) Now finding .the 95% confidence interval estimate of the population mean.
Population Mean = y ± ME
Population Mean = 273 ± 19.523
Population Mean = {(273-19.523), (273+19.523)}
Population Mean = (253.477, 292.523)
(c) Now two years ago the average cost of a hotel room in New York City was $229 then the change in cost over the two-year period is
The change in cost = difference between the cost/old cost
The change in cost = (273-229)/229 *100
The change in cost = 44/229 *100
The change in cost = 0.1921 *100
The change in cost = 19.21%
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Rationalize the denominator 1/ square root of 2
Answer:
Multiply and divide by √2 . You'll get √22
Step-by-step explanation:
In a raffle, 100 tickets are sold. George buys 10 tickets Julia by 5 tickets. There is one winning ticket. Find a probability that
a. George will win
b. jullia will win
The probability that George will win is 1/10 and the probability that Julia will win is 1/20.
What is probability?Probability is a branch of mathematics that deals with numerical representations of the likelihood of an event occurring or of a proposition being true.The probability of an event is a number between 0 and 1, with 0 approximately denoting impossibility and 1 denoting certainty.The probability is calculated by dividing the total number of outcomes by the total number of potential events.So, calculate the probability as follows:
Probability formula: P(E) = Favourable events/Total eventsWe know,
The total number of tickets sold is 100.George has 10 tickets and Julia has 5.(A) George's probability of winning:
P(E) = Favourable events/Total eventsP(E) = 10/100P(E) = 1/10(B) Julia's probability of winning:
P(E) = Favourable events/Total eventsP(E) = 5/100P(E) = 1/20Therefore, the probability that George will win is 1/10 and the probability that Julia will win is 1/20.
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How do I solve this question
The partial fraction form of the given fraction [x+5/(x-7)(x-5)] is
[A/(x-7)+B/(x-5)].
What is decomposition to partial fractions?For a rational fraction to be partially decomposed or expanded in algebra, the fraction must be expressed as the product of a polynomial and one or more fractions with a simpler denominator.Partial fraction decomposition is the process of taking a rational expression and breaking it down into smaller rational expressions that we can combine or divide to recover the original rational expression.So, the fraction is:
x+5/(x-7)(x-5)We know that:
px + q/(x-a)(x-b), a≠b ⇒ A/(x-a) + B/(x-b)Use the same identity to get the partial fraction of the given fraction as follows:
x+5/(x-7)(x-5)A/(x-7) + B/(x-5)Therefore, the partial fraction form of the given fraction [x+5/(x-7)(x-5)] is [A/(x-7) + B/(x-5)].
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Pass journal entries using the perpetual system of inventory-
Purchased 1000 units of shoes from Indiana International at $300 each on account
Sold 200 units to Ceridian Corporation at $500 each on account
Sold 500 units to Semed Inc. at 550 each on cash
Paid cash in full to Indiana International
Purchased 800 units of shoes from CITS at $450 each on cash
Sold 100 units to Deeman Corp at $600 each on cash
The passage of journal entries to record the transactions, using the perpetual system of inventory with the First-in, First-out (FIFO) method, is as follows:
Journal Entries:Account Titles Debit Credit
Inventory $300,000
Accounts Payable (Indiana International) $300,000
To record the purchase of 1000 units of shoes at $300 each.Accounts Receivable
(Ceridian Corporation) $100,000
Sales Revenue $100,000
To record the sale of 200 units at $500 each on account.Cost of goods sold $60,000
Inventory $60,000
To record the cost of 200 units sold.Cash $275,000
Sales Revenue $275,000
To record the sale of 500 units at $550 each.Cost of goods sold $150,000
Inventory $150,000
To record the cost of 500 units sold.Accounts Payable
(Indiana International) $300,000
Cash $300,000
To record the cash payment on account.Inventory $360,000
Cash $360,000
To record the purchase of 800 units at $450 each.Cash $60,000
Sales Revenue $60,000
To record the sale of 100 units at $600 each.Cost of goods sold $30,000
Inventory $30,000
To record the cost of 100 units sold.Transaction Analysis:Inventory $300,000 Accounts Payable (Indiana International) $300,000
Accounts Receivable (Ceridian Corporation) $100,000 Sales Revenue $100,000
Cost of goods sold $60,000 Inventory $60,000
Cash $275,000 Sales Revenue $275,000
Cost of goods sold $150,000 Inventory $150,000
Accounts Payable (Indiana International) $300,000 Cash $300,000
Inventory $360,000 Cash $360,000
Cash $60,000 Sales Revenue $60,000
Cost of goods sold $30,000 Inventory $30,000
Thus, with the perpetual system using FIFO, inventory movements are recorded in the Inventory account as they occur and not at the period's end.
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x-3y = 3
2x - 6y = -24
Substitution.
With the help of substitution the answer to the equation is - (-9/2 , 5/2)
What is substitution method?The substitution method is a quick and easy way to algebraically solve a set of linear equations and determine the variables' solutions. According to what the name implies, this method entails determining the value of the x-variable in terms of the y-variable from the first equation and then substituting or replacing the value of the x-variable in the second equation.. We can solve and determine the value of the y-variable in this method. Finally, we may use any of the above equations to obtain x by substituting the value of y. This procedure can also be switched around so that we first solve for x before solving for y. The substitution method is a quick and easy way to algebraically solve a set of linear equations and determine the variables' solutions.acc to our question -
Subtract 3y from both sides of the equation.Replace all occurrences of x with 3−3y in each equation.Replace all occurrences of x in 2x+6y=6 with 3−3y.2(3−3y)+6y=6x=3−3yHence,The solution to the equation is (-9/2, 5/2) using substitution.
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Evaluate the given function for f (2).
The value of f(2) is 2.
What is graph function?
The collection of all points in the plane with the form (x, f(x)) that make up a function f's graph. We may alternatively say that the graph of f is the graph of y = f. (x). As a result, the graph of an equation is a particular instance of the graph of a function.
All y-coordinates of the graph function are an output of the graph function.
All x-coordinates of the graph function are an input of the graph function.
f(2) is an output of the function.
Here find the y-coordinates of the point on the graph when the value of x is 2.
(2,3) is a point on the graph.
Thus f(2) = 3
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Construct a polynomial function with the following properties: third degree, 2 is a zero of multiplicity 1, −4 is the only other zero, leading coefficient is 2.
The polynomial in standard form is equal to 2 · x³ + 12 · x² - 64.
How to derive a cubic equation
Cubic equations have three roots. In this problem we need to derive a cubic equations whose three real roots (r₁, r₂, r₃) and leading coefficient (a) are given. The procedure consists in substituting on factor form of a cubic polynomial and expanding the resulting expression until standard form is obtained.
First, substitute on the factor form of the cubic equation:
y = 2 · (x - 2) · (x + 4)²
Second, expand the polynomial until its standard form is found:
y = 2 · (x - 2) · (x² + 8 · x + 16)
y = 2 · (x³ + 8 · x² + 16 · x - 2 · x² - 16 · x - 32)
y = 2 · (x³ + 6 · x² - 32)
y = 2 · x³ + 12 · x² - 64
The polynomial is equivalent to 2 · x³ + 12 · x² - 64.
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IQ is normally distributed with a mean of 100 and a standard deviation of 15. a) Suppose one individual is randomly chosen. Find the probability that this person has an IQ greater than 95. Write your answer in percent form. Round to the nearest tenth of a percent. P (IQ greater than 95) = % b) Suppose one individual is randomly chosen. Find the probability that this person has an IQ less than 125. Write your answer in percent form. Round to the nearest tenth of a percent. P (IQ less than 125) = % c) In a sample of 600 people, how many people would have an IQ less than 110? people d) In a sample of 600 people, how many people would have an IQ greater than 140? people
Y =-3x + b solve for b
Answer:
b=3x+y
Step-by-step explanation:
y=-3x+b
get b by itself on one side
y+3x=b
The rearranged equation, [tex]b = Y + 3x[/tex], allows us to determine the value of b based on the given values of Y and x.
Rearranging an equation involves manipulating the terms and variables in order to isolate a specific variable or simplify the equation. The goal is to rewrite the equation in a different form while maintaining equality.
In the context of solving the equation [tex]Y = -3x + b[/tex] for b, rearranging the equation means moving the terms around so that b is isolated on one side of the equation. This is done by performing inverse operations on the equation.
Starting with [tex]Y = -3x + b[/tex], we want to isolate b. To do this, we need to move the [tex]-3x[/tex] term to the other side of the equation.
By subtracting [tex]-3x[/tex] from both sides, we can eliminate the -3x term on the right-hand side. The equation becomes [tex]Y - (-3x) = b[/tex].
Simplifying further, [tex]Y + 3x = b[/tex]. Now, b is isolated on one side of the equation.
Therefore, the rearranged equation, [tex]b = Y + 3x[/tex], allows us to determine the value of b based on the given values of Y and x.
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Which value of a makes the following equation true?
(³) = 125
a = 1
No value of a will work.
a=3
a = 2
Answer:
No value of a will work.
Step-by-step explanation:
let me explain,
given values of a are1,2,3
checking these values of a ,
(1)³=125
1=125 (not true)
(2)³=125
8=125 (not true)
(3)³=125
27=125 (not true)
the correct value of a which makes this equation true is 5. let me make you clear,
(5)³=125
125=125 (true).
In a school of 320 children, 45% of the children speak a language other
than English at home.
(i) Calculate the number of children in the school who speak a
language other than English at home.
(ii) Of the children who speak a language other than English at home,
24 speak Polish. Write the number of children who speak Polish as
a fraction of the number of children who speak a language other than English at home.
Give your answer in its simplest form.
The number of children in the school who speak a language other than English at home is 144.
The fraction of children who speak Polish is 1/6.
How many children speak a language other than English?Percentage is the ratio of a quantity expressed as a number out of 100. Percentage is a measure of frequency. The sign that is used to represent percentage is %.
Number of children in the school who speak a language other than English at home = Percentage of the students who speak a language other than English x number of children
Number of children in the school who speak a language other than English at home = 45% x 320
Number of children in the school who speak a language other than English at home = 0.45 x 320 = 144
A fraction is a non-integer that is made up of a numerator and a denominator. The numerator is the number above and the denominator is the number below.
Fraction of the students who speak Polish = number of students that speak Polish / total number of students who speak a language other than English.
Fraction of the students who speak Polish = 24 / 144 = 1/6.
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consider the line y= 5/2x+5
1. find the equation of the line that is perpendicular to this line and passes through the point (-5,6)
2. find the equation of the line that is parallel to this line and passes through the point (-5,6)
Answer:
Step-by-step explanation:
1
y-6 = -2/5(x-(-5)
y - 6 = -2/5(x+5)
y -6 = -2/5 x -2
y = -2/5 x -2 + 6
y = -2/5 x + 4
2
y-6 = 5/2 (x-(-5)
y-6 = 5/2 (x+5)
y - 6 = 5/2 x + 25/2
y = 5/2 x + 25/2 + 6
y = 5/2 x + (25+12)/2
y = 5/2 x + 37/2
Given (0.25 x 12.3) x 8, which two numbers are compatible, and which
property would you use to calculate this mentally?
4a) Two numbers
4b) Property
The two numbers that are compatible are 0.25 and 8. The property which helps to calculate it is commutative property.
What is the commutative property?
This law merely asserts that while adding and multiplying integers, you can rearrange the numbers in a problem without changing the solution.
Given numerical expression is (0.25 x 12.3) x 8.
First remove the parenthesis from the numerical expression:
(0.25 x 12.3) x 8 = 0.25 x 12.3 x 8
Now apply commutative property:
(0.25 x 12.3) x 8 = (0.25 x 8) x 12.3
(0.25 x 12.3) x 8 = 2.00 x 12.3
(0.25 x 12.3) x 8 = 24.6
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hamilton elementary had 1264 students in 2017. in 2018 the numbers of students increased to 1592 students what was the percent increase rounded to the nearest hundredth
Answer: 25.949%
Step-by-step explanation:
Which ordered pair is a solution of the equation? 2 x + 4 y = 6 x − y 2x+4y=6x−y
The solution to the equation given as 2x + 4y = 6x − y has the ordered pair of (3, 4)
How to determine the ordered pair of the solution?From the question, we have the following equation that can be used in our computation:
2x+4y=6x−y
Solving further, we need to collect the like terms
So, the equation becomes
2x - 6x = -4y - y
Next, we evaluate the like terms in the above equation
So, we have the following representation
-4x = -3y
Divide both sides by -3
The equation becomes
x = 3/4y
At this point, we assume any value for y and then solve for x
Assume that the value of y is 4
So, we have the following representation
x = 3/4 * 4
Evaluate the products
x = 3
So, we have
x = 3 and y = 4
Express as ordered pairs
(x, y) = (3, 4)
Hence, the ordered pair of the solution is (3, 4)
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You can tell that is an irrational number because it has a what?
Answer:
Can't be written as fraction
Step-by-step explanation:
Irrational Numbers are Real Numbers which are not rational , which means that it can't be written as fraction
Consider the equation and the following ordered pairs: (−3,y) and (x,2).
y=−3x−1
Step 1 of 2 : Compute the missing x and y values so that each ordered pair will satisfy the given equation.
Complete the table below.
x y
row 1−3 Answer
row 2 Answer
2
The missing values of the ordered pairs using the given equation are:
x = -1; y = 8
The computed table is:
x | y
-3 8
-1, 2
How to Complete a table Using Equation?To complete a table of values, we can plug in the known value of each of the ordered pairs that are represented in a table into the given equation that models the relationship, then find the value of the missing variable.
The equation that represents the relationship between x and y is given as y = -3x - 1.
Find the value y in the ordered pair (-3, y) by substituting x = -3 into y = -3x - 1:
y = -3(-3) - 1 = 8
y = 8
Find the value x in the ordered pair (x, 2) by substituting y = 2 into y = -3x - 1:
2 = -3x - 1
Add 1 to both sides
3 = -3x
Divide both sides by -3
x = 3/-3
x = -1
The ordered pairs with the missing values are: (-3, 8) and (-1, 2).
The table would be computed as:
x | y
-3 8
-1, 2
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Solve the inequality.
3-x≤-19 or -x ≥ 24
x> [?] or x ≤
x≤[
Enter
The solution to the given inequality 3 - x ≤ 19
or - x ≥ 24 is x ≥ -16 or x ≤ -24
What is the solution of the inequality?An inequality is a statement that is of two quantities; one is specifically less than or greater than another. Inequality symbols are:
Less than < Less than or equal to ≤ Greater than > Greater than or equal to ≥ equal to =3 - x ≤ 19
or
- x ≥ 24
3 - x ≤ 19
substract 3 from both sides-x ≤ 19 - 3
- x ≤ 16
divide both sides by -1
x ≤ 16/-1
x ≥ -16
or
- x ≥ 24
divide both sides by -1x ≥ 24/-1
x ≤ -24
In conclusion, the solution to the inequality is given by x ≥ -16 or x ≤ -24
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Use the formula F = mg-3t²
m = 4, g = 6 and t = 2
0.1098 round to nearest hundredth
calculate the length of a scarf with sections if each section is 1/2 foot long
Answer:
depends on how many sections there are
Step-by-step explanation:
if there were 2 then it would be one foot 4 sections equal 2 and so on. the ratio for this 2:1 meaning there has to be 2 sections for there to be one foot.
f(x) = -x³ + 3x² +9
x=4
[tex]{ \pink{ \boxed{ \red{ \sf{f(4) = - 7}}}}}[/tex]
Step-by-step explanation:
[tex]{ \green{ \sf{f(x) = { - x}^{3} + 3 {x}^{2} + 9}}}[/tex]
[tex]{ \green{ \sf{f(4) = ( { - 4})^{3} + 3( {4})^{2} + 9}}}[/tex]
[tex]{ \green{ \sf{f(4) = - 64 + 3(16) + 9}}}[/tex]
[tex]{ \green{ \sf{ f(4) = - 64 + 48 + 9}}}[/tex]
[tex]{ \green{ \sf{f(4) = - 64 + 57}}}[/tex]
[tex]{ \blue{ \boxed{ \orange{ \sf{f(4) = - 7}}}}}[/tex]
A speed of 60 mph is equal to 88 ft/sec. Find the speed to the nearest mile per hour of an aircraft that travels 1000 ft/sec.
The speed of the aircraft is 682 mph
How to determine the speed of the aircraft to the nearest mile per hour?Given that: A speed of 60 mph is equal to 88 ft/sec
If an aircraft travels at a speed of 1000 ft/sec, the speed to the nearest mile per hour can be calculated by using the unit ratio of
of mph to ft/s, that is:
60/88 = m/1000
m = 6x1000/ 88 = 60000/88 = 682 mph
Therefore, the speed of the aircraft to the nearest mile per hour is 682 mph
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Select all of the descriptions which describe a transformation of the graph of f(x) = x that could result in the graph of g(x) = 7x.
A: The graph is translated 7 units to the right.
B: The graph is rotated about (0, 0), becoming steeper.
C: The graph is reflected across the x−axis.
D: The graph is vertically shrunk.
E: The graph is translated 7 units up.
F: The graph is vertically stretched.
Answer:
A,C,D
Step-by-step explanation:
What is 1+1? is it 11-de-7 or 2
Answer:
2
Step-by-step explanation:
This is because yes. If you add 1 and 1 (use your fingers) and count the two, you simply get 2.
