Answers
Solution:
Notice that for each function, they are simply in the form [tex]f(k(x))[/tex], where [tex]k(x)[/tex] is some function of [tex]x.[/tex] More specifically,[tex]g(x)=f(x-2), h(x)=f(2x), \text{ and } j(x) = f(x^2).[/tex]
Thus, because the Interval of Convergence of [tex]f(x)[/tex] is [tex]-3 < x < 3,[/tex] the Interval of Convergence of [tex]g(x)[/tex] should be [tex]-3 < x-2 < 3 \implies -1 < x < 5.[/tex]
Similarly, the Interval of Convergence of [tex]h(x)[/tex] is [tex]-3 < 2x < 3 \implies -\frac32 < x < \frac32.[/tex]
Finally, the Interval of Convergence of [tex]j(x)[/tex] should be [tex]-3 < x^2 < 3 \implies 0 < x < \sqrt{3}.[/tex]
Related Questions
If cos a = 0.5, then sin a could equal:
Answers
Answer:
Step-by-step explanation:
If cos a = 0.5, then sin a could equal √(1 - cos^2 a) = √(1 - 0.5^2) = √0.75 ≈ 0.866.
What are the correct answers for this.
Answers
Answer:
True, False, True, False, False (answered top to bottom)
Step-by-step explanation:
Write an equation for the function graphed below
Answers
The given graph represents the function with the equation f(x) = 12(x - 1)/[(x + 2)(x - 3)].
To write an equation for the function, we first observe that the vertical asymptotes occur at x = -2 and x = 3, indicating that the denominator (Q(X)) has roots at x = -2 and x = 3. Hence, the equation of the denominator is:
Q(X) = (x + 2)(x - 3)
Furthermore, from the graph, we can see that the zero of the function occurs at x = 3, indicating that the numerator (P(X)) has the factor (x - 3). Let a be the leading coefficient of P(X), so we can write:
P(X) = a(x - 1)(x - 3)
To find the value of a, we use the fact that the y-intercept of the function is (0, -2). Substituting x = 0 and f(0) = -2 into the equation of the function, we get:
-2 = a(-1)/[(2)(-3)]
Simplifying this equation gives us:
a = -2/(2*3) = -1/3
Substituting this value of a into the equation for P(X), we get:
P(X) = (-1/3)(x - 1)(x - 3)
Substituting the equations for P(X) and Q(X) into the formula for f(x), we get:
f(x) = (-4)(x - 1)/[(x + 2)(x - 3)]
Simplifying this equation gives us:
f(x) = -4(x - 1)/[(x + 2)(x - 3)]
Therefore, the equation of the function graphed in the figure is f(x) = -4(x - 1)/[(x + 2)(x - 3)].
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Which graph represents the function f(x) = 2^x-1 + 2?
Answers
The graph that represents the exponential function f(x) = 2^(x - 1) + 2 is given as follows:
Graph A.
How to define an exponential function?An exponential function has the definition presented as follows:
y = ab^x.
In which the parameters are given as follows:
a is the value of y when x = 0.b is the rate of change.The function for this problem is defined as follows:
f(x) = 2^(x - 1) + 2
It has an horizontal asymptote at y = 2, which removes the option C.
The parameter b is of b = 2, meaning that the function is increasing, which removes option D.
The numeric value of the function when x = 0 is given as follows:
f(0) = 2^(0 - 1) + 2
f(0) = 1/2 + 2
f(0) = 5/2
f(0) = 2.5.
Hence graph A is correct.
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At the beginning of an environmental study, a forest covered an area of 1500 km^2. Since then, this area has decreased by 7.75% each year.
Let t be the number of years since the start of the study. Let y be the area that the forest covers in km^2.
Write an exponential function showing the relationship between y and t.
Answers
If "t" number of years the study started and "y" denote the forest cover area, then the exponential-function representing the relation between "y" and "t" is y = 1500 × [tex](0.9225)^{t}[/tex].
An "Exponential-Function" is a mathematical expression in which a constant (called the base) is raised to a variable power.
In this case, we want to find an exponential function that relates the area of a forest (y) to the number of years since the start of an environmental study (t).
We know that the forest is decreasing by 7.75% each year, which means that the area of the forest after "t years" will be some percentage of its original area.
The formula for an exponential function is y = a × [tex]b^{t}[/tex], where "a" = initial value and "b" = growth or decay factor.
In this case, the initial area of the forest is = 1500 km², and
The forest is decreasing by 7.75% each year.
So, the "decay-factor" is = 1 - 0.0775 = 0.9225,
The exponential function that relates the area of the forest (y) to the number of years since the start of the study (t) is:
⇒ y = 1500 × [tex](0.9225)^{t}[/tex],
Therefore, the required "exponential-function" is y = 1500 × [tex](0.9225)^{t}[/tex].
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Find the standard form of the equation of the hyperbola with the given characteristics.
Vertices:
(1, −2), (5, −2);
passes through the point
(−3, 6)
Answers
The standard form of the hyperbola is:
(x-3)²/4 - (y+2)²/(64/35) = 1
How to solve
Given vertices (1, -2) and (5, -2), the center is (3, -2) and the semi-major axis, a = 2.
The hyperbola is horizontal.
Using point (-3, 6), we find the semi-minor axis, b² = 64/35.
The standard form of the hyperbola is:
(x-3)²/4 - (y+2)²/(64/35) = 1
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PLS REPLY FAST NO EXPLAINATION NEEDED
Tony solved the equation below by completing the square, but he got the incorrect solution. In which step did Tony first make an error?
Step 1 : x 2 + 4 x = 77
Step 2 : x 2 + 4 x + 4 = 81
Step 3 : ( x + 2 ) 2 = 81
Step 4 : x + 2 = ± 81
Step 5 : x = 79 , x = − 83
Answers
The error made by Tony is in Step 4, where he wrote "x + 2 = ± 81". The correct step should be:
Step 4: Take the square root of both sides to solve for x.
√((x + 2)^2) = √81
In this step, Tony should have taken the square root of both sides, but he made the mistake of only taking the square root of the right-hand side and neglected to take the square root of the left-hand side correctly.
The correct step should be:
x + 2 = ±9
Step 5: Solve for x.
x + 2 = 9 or x + 2 = -9
Step 6: Subtract 2 from both sides to isolate x.
x = 9 - 2 or x = -9 - 2
This will give the correct solutions:
x = 7 or x = -11
So, the error made by Tony occurred in Step 4 where he only took the square root of the right-hand side and neglected to take the square root of the left-hand side correctly.
Hope this helps!
What is the vertex form of function f? f (x) = 2x^2 + 6x + 5
Answers
Answer:
y = 2(x + 1.5)² + 0.5
Step-by-step explanation:
"To convert the standard form y = ax² + bx + c to vertex form:
Extract a from the first two terms: y = a[x² + (b/a)x] + c.
Add and subtract (b/(2a))² inside the bracket: y = a[x² + (b/a)x + (b/(2a))² - (b/(2a))²] + c.
Use the short multiplication formula: y = a[(x + b/(2a))² - (b/(2a))²] + c.
Expand the bracket: y = a(x + b/(2a))² - b²/(4a) + c.
This is your vertex form with h = -b/(2a) and k = c - b²/(4a)."
^^ not my explanation!!
A new hair cream was just given to a random sample of
500 people that are either bald, or currently losing their hair. The results showed that
175 of people either started growing back hair or stopped losing their hair, and the results had a margin of error of 0.065
.
If the new hair cream will be administered to 7810
people, how many are expected to see improvement?
Between [DROPDOWN1] and [DROPDOWN2] are predicted to see an improvement in their baldness.
Answers
Between 2226 and 3241 people are predicted to see an improvement in their baldness.
How to obtain the amounts?The expected amount of people expected to see improvement is obtained applying the proportions in the context of the problem.
The sample proportion is given as follows:
175/500 = 0.35.
Considering the margin of error, the bounds are given as follows:
0.35 - 0.065 = 0.285.0.35 + 0.065 = 0.415.Hence the amounts out of 7810 people are obtained as follows:
0.285 x 7810 = 2226 people.0.415 x 7810 = 3241 peopleMore can be learned about proportions at https://brainly.com/question/24372153
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I will give brainliest and ratings if you get this correct
Answers
Answer:
below
Step-by-step explanation:
To show that (AB)^-1 = B^-1A^-1, we need to show that:
(AB)(B^-1A^-1) = (B^-1A^-1)(AB) = I
where I is the identity matrix.
Using the associative property of matrix multiplication, we can simplify the left-hand side of the equation as:
(AB)(B^-1A^-1) = A(BB^-1)A^-1 = AIA^-1 = AA^-1 = I
Similarly, using the associative property of matrix multiplication, we can simplify the right-hand side of the equation as:
(B^-1A^-1)(AB) = B^-1(A^-1A)B = B^-1IAB = BB^-1 = I
Therefore, we have shown that (AB)^-1 = B^-1A^-1.
To show this identity, we need to demonstrate that:
(AB)^-1 = B^-1 A^-1
To do this, we start by multiplying both sides of the equation by (AB):
(AB)^-1 (AB) = B^-1 A^-1 (AB)
On the left side, we know that (AB)^-1 is the inverse of AB. So we can simplify to:
I = B^-1 A^-1 (AB)
Where I is the identity matrix. We can now simplify the right side by rearranging the terms:
B^-1 A^-1 (AB) = B^-1 (A^-1 A) B
Since A^-1 A = I, we can simplify further to:
B^-1 (A^-1 A) B = B^-1 IB = B^-1 B = I
Therefore, we have shown that:
(AB)^-1 = B^-1 A^-1
Q.E.D.
please answer question on picture
Answers
The probability that Mason does not arrive at work by 9 a.m. is given as follows:
p = 17/50.
How to calculate a probability?A probability is calculated dividing the desired number of outcomes by the total number of outcomes.
The outcomes relating to the bus not arriving on time are divided as follows:
1 - 3/4 = 1/4 of 4/5. -> bus arrives on time.1 - 3/10 = 7/10 of 1 - 4/5 = 1/5. -> bus does not arrive on time.Hence the probability is given as follows:
p = 1/4 x 4/5 + 7/10 x 1/5
p = 1/5 + 7/50
p = 10/50 + 7/50
p = 17/50.
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Denzel used the spinner shown below to compare theoretical probability and experimental probability. He spun the spinner 180 times and recorded the letter that it landed on each time. The results are shown in the table..
Which statement correctly compares the theoretical probability and experimental probability for one of the letters on the spinner?
A. The theoretical probability of landing on a C is greater than the experimental probability of landing on an C.
B. The theoretical probability of landing on a D is greater than the experimental probability of landing on an D.
C. The theoretical probability of landing on a B is less than the experimental probability of landing on an B.
D. The theoretical probability of landing on an A is less than the experimental probability of landing on an A.
Answers
Answer:
C
Step-by-step explanation:
The theoretical probability of landing on A, B, C, or D is all 1/4. This would also mean the theoretical probability is 45/180. Statement C is the only one that is true.
answer this please and thank you
Answers
Answer:
2800=1.4tons
Step-by-step explanation:
2000Ib=1ton
I am confused on how to solve the table and find the velocity
Answers
Answer:
Step-by-step explanation:
y = 5x^3 - x
Slope of a secant
= (y2 - y1)/(x2-x1) where (x1, y1) and (x2, y2) are the 2 points.
Slope for the interval (1, 2)
= [5(2)^3 - 2)- (5(1)^3 - 1)] / (2-1)
= 34
Slope for interval (1, 1.5)
= [5(1.5)^3 - 1.5)- (5(1)^3 - 1)] / (1.5-1)
= 22.75
In the same way we get the slopes of the intervals:
(1, 1.1):- 15.55
(1, 1,01):- 15.15
(1, 1.001):- 15.015
So the answer is 15.
A company reports the following beginning inventory and two purchases for the month of January on January 26th the company says $420 units ending inventory at January 31st totals $170 units assume the Perpetual inventory system is used determine the cost to assigned to the ending inventory will cost or assigned based on the lifo method
Answers
The cost assigned to the ending inventory will cost or assigned based on the lifo method is attached.
What is the inventory about?Denoting the valuation of inventories a business owns at the completion of any accounting term – be it monthly, quarterly, or annually – ending inventory speaks to the cost of items that have yet to be sold or used in the creation of goods and services.
Checking a company's economic performance is contingent on examining its ending inventory since this element impacts cost of goods sold (COGS) substantially; many corporations' COGS are worked out by subtracting the cost of goods distributed over a period from the overall cost of goods available for sale during that same interval.
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Quadrilateral EFGH is a rhombus which addition fact would prove that EFGH is a square
the answer choices are in the photo below I will give brainlyest to right answer
Answers
Option C) EG bisects ZFEH would prove that EFGH is a square.
What is quadrilateral?In geometry, a quadrilateral is a polygon with four sides and four vertices (corners). It is a two-dimensional shape with four straight sides, and the sum of its interior angles is equal to 360 degrees. Some common types of quadrilaterals include squares, rectangles, parallelograms, trapezoids, and rhombuses. Each type of quadrilateral has its own unique set of properties, such as congruent sides and angles, parallel sides, or perpendicular diagonals. Quadrilaterals are used in many areas of mathematics, as well as in engineering, architecture, and other fields.
Here,
A rhombus has opposite sides congruent, but its angles are not necessarily right angles. However, if the diagonals of a rhombus are perpendicular bisectors of each other, then the rhombus is a square.
If EG bisects ZFEH, then the opposite angles of the rhombus are congruent and the diagonals of the rhombus are perpendicular bisectors of each other. This means that EFGH is a square, and all its sides and angles are congruent.
Options A), B), and D) do not provide any information about the shape of EFGH.
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Draw a bar chart to show how the price increased
Answers
The bar chart showing the growth of the price per tone of ground nut over the years is attached accordingly.
What is a bar chart?A bar chart, sometimes known as a bar graph, is a type of chart or graph that displays categorical data using rectangular bars with heights or lengths proportionate to the values they represent. The bars can be plotted horizontally or vertically. A vertical bar chart is also known as a column chart.
From the bar chart, is clarer to see that the price of ground nut per tone increased steadily year on year.
By the year 2008, it had hit record high of 100,000 per ton.
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Name an acute angle and give its measure.
Angle: ______ Measure: _____
Name an obtuse angle and give its measure. (2 points)
Angle: _____ Measure: _____
Name one right angle. (1 point
Name one straight angle. (1 point)
Answers
11. Angle KEF = 40°, Angle KEJ = 50°
12. Angle HEF = 115°, Angle KED = 140°
13. Angle JEF = 90°, Angle KEF = 90°
14. Angle DEF = 180°
Define the term geometry?The study of points, lines, and shapes in two and three dimensions, as well as their properties and relationships, is the focus of the mathematical discipline known as geometry.
11. Acute angles: Those angles are less than 90 degree angles.
Angle KEF = 40°
Angle KEJ = 50°
Angle KEH = 75°
Angle JEH = 25°
Angle HED = 65°
12. Obtuse angles: Those angles are more than 90 degree angles.
Angle HEF = 115°
Angle KED = 140°
13. Right angle: Those angles are 90 degree angle.
Angle JEF = 90°
Angle KEF = 90°
14. Straight angle: Those angles make 180 degree angle.
Angle DEF = 180°
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Which scenario has the ratio 1/2?
Answers
Triangles to total shapes because triangles= 5 total, and total shapes = 10. 5/10 simplifies to 1/2
3. Ronald Kivetsky bought a new car and received these price quotes
from his insurance company.
a. What is the annual premium?
b. What is the semiannual premium?
c. How much less would Ronald's semiannual payments be if he
dropped the optional collision insurance?
Answers
Answer:
A.the annual premium can be found by multiplying the monthly premium by 12:
Annual premium = Monthly premium x 12
Annual premium = $65 x 12 = $780
b. The semiannual premium can be found by dividing the annual premium by 2:
Semiannual premium = Annual premium / 2
Semiannual premium = $780 / 2 = $390
c. To calculate how much less Ronald's semiannual payments would be if he dropped the optional collision insurance, we need to subtract the cost of the optional insurance from the semiannual premium:
Semiannual payment with optional insurance = Semiannual premium - $120
Semiannual payment with optional insurance = $390 - $120 = $270
Semiannual payment without optional insurance = Semiannual premium - $120
Semiannual payment without optional insurance = $390 - $120 = $270
Therefore, Ronald's semiannual payments would be $270 if he dropped the optional collision insurance.
Finding the mean of data
Answers
For example, let's say you have the following data set: 2, 4, 6, 8, 10.
To find the mean of this data set, you would add up all the values:
2 + 4 + 6 + 8 + 10 = 30
Then, you would divide the sum by the total number of values in the data set:
30 / 5 = 6
Therefore, the mean of this data set is 6.
Construct a scatterplot and identify the mathematical model that best fits the data. Assume that the model is to be used only for the scope of the given data and consider only linear, quadratic, logarithmic, exponential, and power models. Use a calculator or computer to obtain the regression equation of the model that best fits the data. You may need to fit several models and compare the values of R2.
y = 11.46 e1.107x
y = 0.45x1.903
y = –109.41 + 14.59x
y = –477.38 + 237.66 ln x
Answers
The regression equation that fits the scenario will be y = 11.46 e1.107x
How to explain the equationUtilizing this method with the provided information, we attain the regression equation:
ln y = 2.4502 + 0.0515x
It should be noted that to find the exponential equation, we can elevate both sides of the equation:
y = e^(2.4502 + 0.0515x) = 11.46 * e^(1.107x)
Consequently, the mathematical model that is most suitable for the mentioned data is:
y = 11.46 * e^(1.107x)
The coefficient of determination (R-squared) for said model is 0.994, thus indicating an incredibly strong fit.
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a local bakery was trying to determine what kind of desserts their customers would like to see offered in the bakery they conducted several random surveys over a period of two weeks to gather data on customers preferred desserts the results of the surveys are shown in the table?
Answers
Therefore, the closest option to the calculated percentage is option (d) 44%.
What is percent?Percent, denoted by the symbol "%", is a way of representing a fraction or proportion out of 100. It is used to express a part of a whole in terms of hundredths. For example, 50% is the same as 50 out of 100, which simplifies to 1/2 or 0.5 as a decimal. Percentages are commonly used in many areas such as finance, statistics, and everyday life to express changes, rates, or comparisons.
Here,
To calculate the percentage of customers who prefer cookies, we need to add up the number of customers who prefer cookies from each survey and divide it by the total number of customers who took the survey.
Number of customers who prefer cookies: 25 + 9 + 28 + 11 = 73
Total number of customers who took the survey: 17 + 11 + 20 + 13 + 25 + 8 + 9 + 30 + 26 + 11 = 170
Percentage of customers who prefer cookies: (73/170) x 100% ≈ 44%
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If JK is tangent to circle L, find x.
x =
(60 POINTs will give BRAINIEST FOR EFFORT)
Answers
Answer:
x ≈ 11.87 units-----------------------
Tangent line is perpendicular to radius at the point of tangency.
Hence we have:
MJ ⊥ KJTherefore ΔMKJ is a right triangle.
Radius is 11, so diameter is 22, this is one of legs and its hypotenuse is 25 units.
Use Pythagorean theorem to find the missing leg:
x² = 25² - 22²x² = 141x = √141x ≈ 11.87 units (rounded)Can anyone help with the geometry notes
Answers
Based on the Tangent Chord Theorem:
m∠1 = ¹/₂ ABm∠1 = ¹/₂ ACBm∠DEG = 154°m∠DBC = 84°m XY = 56°What is the tangent chord theorem?The Tangent Chord Theorem states that if a chord and a tangent intersect at the point of tangency, then the measure of each angle formed is equal to half the measure of its intercepted arc.
Considering the given angles;
m∠1 = ¹/₂ AB
m∠1 = ¹/₂ ACB
m∠DEG = ¹/₂ * 308°
m∠DEG = 154°
m∠DBC = ¹/₂ * (360 - 192)
m∠DBC = 84°
m XY = 360 - (151 * 2)
m XY = 56°
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How likely is it that
at least > or them are vowe tiles?
) Which simulation could be used to fairly represent the situation?
Answers
There is a probability of 0.117 for at least 2 of the tiles to be vowel tiles.
Given that,
Probability that the tiles getting is a vowel tile is 30%.
P(V) = 30% = 0.3
That is there will be only 3 tiles out of 10 tiles which are vowels.
Out of 8, there will be 8 × 0.3 = 2.4 tiles which are vowels.
There would be either 2 or 3 vowels.
Probability that at least 2 of them is vowel tiles is,
Probability = (0.3)² + (0.3)³
= 0.117
Here,
The simulation which can be used to fairly represent the situation is,
Use a computer to randomly generate 8 numbers from 1 to 10. Each time 1, 2 or 3 appears, it represents a vowel tile.
Hence, the required probability is 0.117.
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Graph the function f(t)=e0.4t
Answers
Answer:
here is the graph for it
Step-by-step explanation:
Gary, the technology coordinator of a high school, is planning to purchase one memory stick for each of the teachers. There are 86 teachers at the school.
Answers
Answer: 86 memory sticks should be purchased
Step-by-step explanation: If he needs to be a stick for each teacher, and there are 86 teachers, then he needs to be 86 sticks.
A triangle has a base of 12 cm and an area of 18 cm².
Find the height of the triangle:
Height = cm
Answers
Answer:
3cm
Step-by-step explanation:
triangle formula is height times base divided by two and divide base by two. then its 6 and divide 6 from 18. so the answer is 3cm
The probability that a certain state will be hit by a major tornado (category F4 or F5) in any single year is
parts (a) through (d) below.
1/20
Complete
(Simplify your answer. Round to five decimal places as needed.)
- What is the probability that the state will be hit by a major tornado in three consecutive years?
(Simplify your answer. Round to five decimal places as needed.)
What is the probability that the state will not be hit by a major tornado in the next ten years?
(Round to three decimal places as needed.)
What is the probability that the state will be hit by a major tornado at least once in the next ten years?
(Round to three decimal places as needed.)
Answers
the probability of a major tornado in three consecutive years is 1/8000. the probability of not having a major tornado in the next ten years is approximately 0.328. he probability of having at least one major tornado in the next ten years is approximately 0.672.
How to the probabilities in the question(a) The probability of a major tornado in any single year is 1/20. To find the probability of a major tornado in three consecutive years, we multiply the probabilities together:
P(major tornado in 3 consecutive years) = (1/20) * (1/20) * (1/20) = 1/8000
So the probability of a major tornado in three consecutive years is 1/8000.
(b) The probability of not having a major tornado in any single year is 19/20. To find the probability of not having a major tornado in the next ten years, we raise this probability to the power of 10:
P(no major tornado in next 10 years) = (19/20)^10 ≈ 0.328
So the probability of not having a major tornado in the next ten years is approximately 0.328.
(c) To find the probability of having at least one major tornado in the next ten years, we can subtract the probability of having no major tornadoes in the next ten years from 1:
P(at least one major tornado in next 10 years) = 1 - P(no major tornado in next 10 years)
P(at least one major tornado in next 10 years) = 1 - (19/20)^10 ≈ 0.672
So the probability of having at least one major tornado in the next ten years is approximately 0.672.
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