The value of sin(x - y) is -3 * (e + √(e² - 8))/2. Answer: sin(x - y) = -3 * (e + √(e² - 8))/2. We know that cos function is negative in the second quadrant of the unit circle
Given that cos x = -3, we know that cos function is negative in the second quadrant of the unit circle. Hence, sin function in the second quadrant is positive. Therefore, sin x = √(1-cos²x) = √(1-9) = √(-8) is not a real number since we cannot take a square root of a negative number.
Hence, no solution exists for x.
Now, let's find the value of sin y using the given equation siny siny = 2 + ye
=> y² - ey + 2
= 0
Solving the above quadratic equation, we get y = (e ± √(e² - 8))/2
Since sin function has a range of [-1, 1], we can eliminate the negative solution and only take the positive one.
y = (e + √(e² - 8))/2 = 1 + √3sin(x - y) = sinx cosy - siny cosx= -3 * siny
Since sin y = (e + √(e² - 8))/2, we have: sin(x - y) = -3 * (e + √(e² - 8))/2
Hence, the value of sin(x - y) is -3 * (e + √(e² - 8))/2. Answer: sin(x - y) = -3 * (e + √(e² - 8))/2.
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Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2
a) p 2
y
2
– 2py + 1 b) a 2
y
2
– 2aby + b2
The factorisation of the given expressions is as follows;
a) p²y²– 2py + 1 = (py -1)²b) a²y² -2aby +b² = (ay - b)²Factorization using identitiesThe given identity is;
a²– 2ab + b² = (a – b)²From the given identity, we can conclude that;
In the expression (a);
py represents a in the identity and 1 represents b in the identity.In the expression (b);
ay represents a in the identity and b represents b in the identity.Hence, the factorised expressions are as represented above.
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find the value of w. round to the nearest tenth
Answer:
\(\pmb {w=13.11}\)Step-by-step explanation:
\(\pmb {sin(22)^o=\cfrac{x}{35} }\)
\(\pmb {35sin(22)=w}\)
\(\pmb {w=13.11}\)
_________________
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Data _____ involves creating new ways of modeling and understanding the unknown by using raw data
The complete statement is data analysis involves creating new ways of modeling and understanding the unknown by using raw data.
What is data analysis?Data analysis can be defined as the process of cleaning, changing, and processing raw data, to relevant information that helps in the decision making of a business.
The procedure of data analysis helps in reducing the risks involved in decision-making by providing useful insights and statistics,.
Analyzed data are often presented in charts, images, tables, and graphs.
Some types of data analysis are;
Diagnostic AnalysisPredictive AnalysisPrescriptive AnalysisStatistical AnalysisThus, the complete statement is data analysis involves creating new ways of modeling and understanding the unknown by using raw data.
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I need help these. Thank you. :)
Answer:
the answer is 3 hope this helps
Take the derivatives of the following functions. Do not simplify. a. f(x)=10x
4
f(x)= b. f(x)=20x+30x
3
f(x)= c. f(x)=(10+2x
2
)(5x−x
2
)f(x)=
d. f(x)=
20xx
2
f(x)=
a. f'(x) = 40x³
To find the derivative of f(x) = 10x⁴, we apply the power rule.
The power rule states that if f(x) = axⁿ, then f'(x) = naxⁿ⁻¹. Applying this rule, we get f'(x) = 4 * 10x³ = 40x³.
b. : f'(x) = 20 + 90x²
To find the derivative of f(x) = 20x + 30x³, we differentiate each term separately. The derivative of 20x is 20, and the derivative of 30x³ is 90x² (applying the power rule). Adding these derivatives, we get f'(x) = 20 + 90x².
r: f'(x) = (20x - 4x²)(5x - x²) + (10 + 2x²)(-2x + 5)
To find the derivative of f(x) = (10 + 2x²)(5x - x²), we apply the product rule. The product rule states that if f(x) = g(x) * h(x), then f'(x) = g'(x) * h(x) + g(x) * h'(x). Differentiating each term, we get f'(x) = (20x - 4x²)(5x - x²) + (10 + 2x²)(-2x + 5).
d.: f'(x) = 40x
To find the derivative of f(x) = 20x / (x²), we use the quotient rule. The quotient rule states that if f(x) = g(x) / h(x), then f'(x) = (g'(x) * h(x) - g(x) * h'(x)) / (h(x)²). In this case, g(x) = 20x and h(x) = x². After differentiating and simplifying, we obtain f'(x) = 40x.
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If you ran a lemon aide stand and you sold 3 cups of lemonade to each person at .50 cents per cup,
how much money did you make selling to 25 people?
Answer:
$37.50
Step-by-step explanation:
{25(3)}0.50
-25 people times 3 cups for each person= 75
-0.50 times the amount of cups= 37.50
You would make 37 dollars and 50 cents.
a dealership is allowing residents to test drive the following vehicles: 2 sports cars, 3 vans, and 3 trucks. if you select a random car to test drive, what are the odds it is not a sports car? write your answer as 1:2 which is reduced as much as possible.
Step-by-step explanation:
To find probability ratio wise
Sports Cars: Total Cars
3 + 3 + 2 = 8 total cars
2 sports cars
Ratio is 2:8
Reduces to 1:4
What is the value of 2 3/4÷3/4 ?
Answer:
Exact Form:
11 /3
Decimal Form:
3. 6
Mixed Number Form:
3 2 /3
Step-by-step explanation:
what is the one-way analysis of variance used to test for? what is the one-way analysis of variance used to test for? equality of three or more population means equality of three or more population proportions equality of three or more sample means equality of three or more population variances
Main Answer:The correct answer is "equality of three or more population means."
Supporting Question and Answer:
What is the purpose of the one-way analysis of variance (ANOVA) test?
ANOVA helps to assess whether these differences are statistically significant by comparing the variation between the groups to the variation within the groups.
Body of the Solution:The one-way analysis of variance (ANOVA) is used to test for" the equality of three or more population means". ANOVA compares the variation between the groups (due to differences in means) to the variation within the groups (due to individual differences within each group) to assess whether the observed differences in means are statistically significant. Therefore, the correct answer is:
"equality of three or more population means."
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What is 4(1 + 9x) ?
Answer:
36x+4
Step-by-step explanation:
4*1+4*9x
1. Solve the equation: - 2x + 8 = 3x + 14
-2x + 8 = 3x + 14
-2x - 3x = 14 - 8
-5x = 6 / : (-5)
x = -1,2
Answer: x = -6/5
Step-by-step explanation:
Given equation
-2x + 8 = 3x + 14
Subtract 3x on both sides
-2x + 8 - 3x = 3x + 14 - 3x
-5x + 8 = 14
Subtract 8 on both sides
-5x + 8 - 8 = 14 - 8
-5x = 6
Divide -5 on both sides
-5x / -5 = 6 / -5
\(\boxed{x = -\frac{6}{5} }\)
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for a ride on a rental scooter, alonzo paid a fee to start the scooter plus cents per minute of the ride. the total bill for alonzo's ride was . for how many minutes did alonzo ride the scooter?
Alonzo rode the scooter for 44 minutes.
Let the fee to start the scooter be F, and let the cost per minute of the ride be C. We are given that Alonzo's total bill for the ride is T. With this knowledge, we can construct the following equation:
T = F + Cm
where m is the number of minutes Alonzo rode the scooter. We want to solve for m.
To find m, we may rewrite the equation as follows:
m = (T - F)/C
Therefore, the number of minutes Alonzo rode the scooter is (T - F)/C.
For example, let's say the fee to start the scooter is $2.50, and the cost per minute of the ride is $0.15. If Alonzo's total bill for the ride was $9.20, then we can plug these values into the equation above to find the number of minutes Alonzo rode the scooter:
m = (T - F)/C = (9.20 - 2.50)/0.15 = 44
Therefore, Alonzo rode the scooter for 44 minutes.
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32 more than a number n
Answer:
32+n
Step-by-step explanation:
32 more than the number n would be 32+n.
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Determine the quadrant(s) in which (x, y) could be located. (Select all that apply.) x > 0 and y < 0 Quadrant I Quadrant II Quadrant III Quadrant IV none of these
Answer:
Quadrant IV
Step-by-step explanation:
If x is greater than 0, then it will remain on the right side, on quadrants I and IV. If y is less than 0, then it will be on the bottom, so we are left with quadrant IV:
x is greater than 0, so all possible values are positive
y is less than 0, so all possible values are negative
(x,-y)
Following are the description of the wrong choice:
In the first Quadrant, (x,y) both -axis values are positive that's why it is wrong.In the second Quadrant, the x-axis has a negative value and the y-axis has a positive value that's why it's wrong.In the third Quadrant, (x,y) both -axis has the negative value that's why it is wrong.That's why the "Quadrant IV" is the correct answer.
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quadrant: brainly.com/question/7196054Three times a number minus a different number is equal to -3. The sum of the numbers is 11. What are the two numbers?
Define Variables:
Write a system and solve:
Solution sentence:
That is how it was worded if you could help me with this problem I would be so grateful!
Step-by-step explanation:
Define variables: let the numbers be x and y
Write a system: 3x-y=-3
x+y=11
Solve: Add both numbers to eliminate y
4x=8
x=2
Plug x=2 into the second equation
2+y=11
y=11-2=9
Solution sentence: the values are 2 and 9
Answer:
2 and 9\( \\ \)
Step-by-step explanation:
It is given that, three times a number minus a different number is equal to -3 and the sum of the numbers is 11 and we are to find the numbers.
\( \\ \)
Let us assume the numbers as a and b .Three times a minus a different number is equal to -3 :
\({\longrightarrow \pmb{\sf {\qquad 3a-b=-3 \:...... \: (i)}}} \\ \\\)
The sum of the numbers is 11.
\({\longrightarrow \pmb{\sf {\qquad a + b=-11 \:...... \: (ii)}}} \\ \\\)
Adding equation (i) and (ii) :
\( \\ {\longrightarrow \pmb{\sf {\qquad 3a-b + (a + b)=-3 + 11 }}} \\ \\\)
\( {\longrightarrow \pmb{\sf {\qquad 3a \: \: \cancel{-b }+ a + \cancel b=8 }}} \\ \\\)
\({\longrightarrow \pmb{\sf {\qquad 4a =8 }}} \\ \\\)
Dividing both sides by 4 :
\( \\ {\longrightarrow \pmb{\sf {\qquad \frac{4a}{4} = \frac{8}{4} }}} \\ \\\)
\({\longrightarrow \pmb{\sf {\qquad a =2 }}} \\ \\\)
Now, Substituting the value of a in equation (ii)
\({\longrightarrow \pmb{\sf {\qquad a + b=11 }}} \\ \\\)
\({\longrightarrow \pmb{\sf {\qquad 2 + b=11 }}} \\ \\\)
\({\longrightarrow \pmb{\sf {\qquad b=11 - 2 }}} \\ \\\)
\({\longrightarrow \pmb{\sf {\qquad b=9 }}} \\ \\\)
Therefore,
The two numbers are 2 and 9scores on a test are normally distributed with a mean of 86 and a standard deviation of 3. what is the exam score corresponding to a standard score of -0.95?
If the test scores are normally distributed then the exam score corresponding to a standard score of -0.95 is 83.15 .
In the question ,
it is given that ,
the mean of the normally distributed score is (μ) = 86 ;
the standard deviation of the normally distributed is(σ) = 3 ;
we have to find the exam score(z score) corresponding to the standard score of -0.95 .
we know that z-score for the population mean (μ) and standard deviation(σ) is
Z = (x - μ)/σ
rewriting ,
we get ,
x = μ + Zσ
given that standard score (z) is = -0.95 .
the exam score corresponding to z = -0.95 can be calculated using the formula ,
x = μ + Zσ
Substituting Z = -0.95 , μ = 86 and σ = 3 ;
we get ,
x = 86 + (-0.95)×3
x = 86 - 2.85
x = 83.15
Therefore , the exam score corresponding to the standard score of "-0.95" is 83.15 .
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Solve
82 - 21 + 10 = 61
Answer:
False
Step-by-step explanation:
82 - 21 + 10 = 61 is false 82 - 21 + 10 = 71
Please help
5|x - 3| < 35
Values of absolute value inequality:
x < 10
-∞ to 9 < x
Define inequality.In mathematics, inequalities specify the connection between two non-equal numbers. Equal does not imply inequality. Typically, we use the "not equal sign (≠)" to indicate that two values are not equal. But several inequalities are utilized to compare the numbers, whether it is less than or higher than. Both mathematical phrases, equations and inequalities, are created by connecting two expressions. The equal sign (=) indicates that two expressions in an equation are believed to be equivalent. The symbols >,<,≥,≤ or ≠ indicate that the two expressions in an inequality are not always equal.
Given,
Inequality
5[x -3 } < 35
5x -15 < 35
5x < 50
Values:
x < 10
-∞ to 9 < x
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Please help :) angles
Answer:
y = 95
Step-by-step explanation:
The exterior angle is equal to the sum of the opposite interior angles
y+25 = 120
y = 120-25
y = 95
Hi - I am doing the exponent rules escape room and the question is the "exponential express" (4^(0)*4^(3)*4^(2))/(3^(-3)) = 27648 but only 4 options are open to put in the "code"...
Notice the following:
\(\begin{gathered} 3^4=81, \\ 4^2=16, \\ 9^3=729, \\ 13^0=1, \\ 7^{-1}=\frac{1}{7}. \end{gathered}\)Therefore:
Finally, substituting the values in the given expression we get:
\(\frac{4^04^34^2}{3^{-1}}=3072.\)Answer: 3072.
The new runway your client is pouring on the east side of the estate is to the ranch house is 3.75 miles long, and covers a total of 5.6 acres, which means the runway is feet wide.
The width of the runway is approximately 28.3 feet. The length of the runway in feet is Length = 3.75 miles * 5,280 feet/mile
The new runway being constructed on the east side of the estate, which extends to the ranch house, is 3.75 miles long and covers a total area of 5.6 acres. To determine the width of the runway in feet, we can use the following information:
1 acre = 43,560 square feet
First, let's convert the length of the runway from miles to feet:
1 mile = 5,280 feet
Therefore, the length of the runway in feet is:
Length = 3.75 miles * 5,280 feet/mile
Next, let's calculate the width of the runway using the area and length:
Area = Length * Width
Since we are given the area in acres, we need to convert it to square feet:
Area = 5.6 acres * 43,560 square feet/acre
Now, we can solve for the width:
Width = Area / Length
Substituting the values we have:
Width = (5.6 acres * 43,560 square feet/acre) / (3.75 miles * 5,280 feet/mile)
Simplifying the expression:
Width = (5.6 * 43,560) / (3.75 * 5,280) feet
Calculating the value:
Width ≈ 560,784 / 19,800 feet
Width ≈ 28.3 feet
Therefore, the width of the runway is approximately **28.3 feet**.
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A televison set can be bought for $860 cash or on hire purchase with $100 down payment and 12 monthly installments of $70 each. The amount that may be saved by buying the television for cash is
A) $80
B) $100
C) $940
D) $960
rotate 270° counterclockwise
Answer:
When rotating a point 270 degrees counterclockwise about the origin our point A(x,y) becomes A'(y,-x). This means, we switch x and y and make x negative.
Step-by-step explanation:
Julie purchased 312 gallons of oil on Monday. On Thursday, she purchased 129 gallons of oil. What is a good estimate for the total gallons of oil Julie purchased on both days?
Answer:
i dont knowwwwwwwwwwww : D
Step-by-step explanation:
If the product of two rational numbers is (-9/16) and one of them is (-4/15) find the other number.
Given:
The product of two numbers is (-9/16).One of the numbers is (-4/15)To find: The other number.
Answer:
Let's assume the unknown number to be 'x'.
(-4/15) × x = (-9/16)
× = (-9/16) ÷ (-4/15)
When we divide a fraction by another fraction, the divisor will be taken in its reciprocal form.
x = (-9/16) × (-15/4)
x = 135/64
Therefore, the other number is 135/64.
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What is the line of x =- 2?.
Precalculus is an example here, since x=−2 is a vertical type line, there is no y-intercept as well as the slope is undefined.
The slope is undefined and all of the factors on the road have an x-coordinate of that (a few number). For example, if x = -2, then all factors alongside this line can have an x-coordinate of -2, making it a vertical line. y=−2 is a flat line crossing the factor at (0,−2) consequently the gradient is 0 and the the y intercept is -2.
A terrible slope approach that variables are negatively related; that is, whilst x increases, y decreases, and whilst x decreases, y increases. Graphically, a terrible slope approach that as the road on the road graph movements from left to right, the road falls. The x-coordinate -2 is represented throughout. This is NOT a function.
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Suppose that the scores on a reading ability test are normally distributed with a mean of 65 and a standard deviation of 8. a) If one student is chosen at random, what is the probability that the students score is less than 81 points on this test? b) If 500 students took reading ability test how many would expect to earn score less than 81 points? c) Find the probability of randomly selecting 35 students (all from the same class) that have a sample mean reading ability test score between 66 and 68.
The probability that a student's score is less than 81 points on the reading ability test is 0.9772. We would expect approximately 489 students to earn a score less than 81 points if 500 students took the reading ability test. The probability of randomly selecting 35 students (all from the same class) that have a sample mean reading ability test score between 66 and 68 is approximately 0.2190.
To find the probability that a student's score is less than 81 points, we need to standardize the score using the z-score formula:
z = (x - μ) / σ
where x is the student's score, μ is the mean score, and σ is the standard deviation. Plugging in the values, we get:
z = (81 - 65) / 8 = 2.00
Using a standard normal distribution table or calculator, we can find the probability of a z-score less than 2.00 to be approximately 0.9772. Therefore, the probability that a student's score is less than 81 points is 0.9772.
Since the distribution is normal, we can use the normal distribution to estimate the number of students who would earn a score less than 81. We can standardize the score of 81 using the z-score formula as above and use the standardized score to find the area under the normal distribution curve. Specifically, the area under the curve to the left of the standardized score represents the proportion of students who scored less than 81. We can then multiply this proportion by the total number of students (500) to estimate the number of students who would score less than 81.
z = (81 - 65) / 8 = 2.00
P(z < 2.00) = 0.9772
Number of students with score < 81 = 0.9772 x 500 = 489
Therefore, we would expect approximately 489 students to earn a score less than 81 points.
The distribution of the sample mean reading ability test scores is also normal with mean μ = 65 and standard deviation σ / sqrt(n) = 8 / sqrt(35) ≈ 1.35, where n is the sample size (number of students in the sample). To find the probability that the sample mean score is between 66 and 68, we can standardize using the z-score formula:
z1 = (66 - 65) / (8 / sqrt(35)) ≈ 0.70
z2 = (68 - 65) / (8 / sqrt(35)) ≈ 2.08
Using a standard normal distribution table or calculator, we can find the probability that a z-score is between 0.70 and 2.08 to be approximately 0.2190. Therefore, the probability of randomly selecting 35 students (all from the same class) that have a sample mean reading ability test score between 66 and 68 is approximately 0.2190.
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one month jane rented 9 movies and 7 video games for a total of $56 the next month she rented 3 movies and 5 video games for a total of $34 find the rental cost for each movie and each video game
Solve for y: 12h - my = 3
Answer:
y=-3/m+12h/m
Step-by-step explanation:
y=-3/m+12h/m i believe is the answer
(0)
A production line operates for two eight-hour shifts each day. During this time, the production line is expected to produce 3,000 boxes. What is the takt time in minutes?
Group of answer choices
.25
.3
3
.6
The expected number of boxes to be produced is given as 3,000 boxes. So, the correct answer is 0.3, indicating that the takt time in minutes is 0.3 minutes.
The production line operates for two eight-hour shifts each day, which means there are 16 hours of production time available. Since there are 60 minutes in an hour, the total available time in minutes would be 16 hours multiplied by 60 minutes, which equals 960 minutes.
The expected number of boxes to be produced is given as 3,000 boxes.
To calculate the takt time in minutes, we divide the total available time (960 minutes) by the expected number of boxes (3,000 boxes):
\(Takt time = Total available time / Expected number of boxes\)
\(Takt time = 960 / 3,000\)
By performing the calculation, we find that the takt time is approximately 0.32 minutes, which is equivalent to 0.3 minutes rounded to one decimal place.
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