According to the exponential growth formula , there will be 38400 bacteria present after 3 days.
The given formula for the bacteria population, f(x) = 75 - 8², seems to be incorrect. Since the bacteria reproduce by dividing in half every 8 hours, we should use an exponential growth formula.
Let's denote the number of bacteria present after z days as f(z). Since there are 24 hours in a day, there are 3 reproduction cycles in a day (24 hours / 8 hours per cycle = 3 cycles). Therefore, the total number of reproduction cycles after z days is 3z.
The formula for the bacteria population after z days is: f(z) = 75 * 2^(3z)
Now, let's find the total number present after 1, 2, and 3 days.
1 day: f(1) = 75 * 2^(3 * 1) = 75 * 2^3 = 75 * 8 = 600
There will be 600 bacteria present after 1 day.
2 days: f(2) = 75 * 2^(3 * 2) = 75 * 2^6 = 75 * 64 = 4800
There will be 4800 bacteria present after 2 days.
3 days: f(3) = 75 * 2^(3 * 3) = 75 * 2^9 = 75 * 512 = 38400
There will be 38400 bacteria present after 3 days.
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Find the measure of the indicated angle to the nearest degree.
8)
7)
28
25
I
Find the area of each.
9)
5m
6.7 m
10)
8 km
46
9.6 km
22
The given angles and measures is given below:
What is an Angle?In mathematics and geometry, an angle is a measure of the space between two intersecting lines, rays, or line segments, usually expressed in degrees, radians, or grads. It is the measure of the opening between two lines that intersect at a common point, called the vertex of the angle.
5) tan x = 153 / 41
x = tan^-1 ( 153 / 41 )
75 degrees
6) tan y = 25/25
y = tan^-1 ( 25/25 )
45 degrees
7) sin z = 10/28
z= sin^-1 ( 10/28 )
21 degrees
8) cos a = 47/50
a = cos^-1( 47/50)
20 degrees
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What is the effect on the graph of the function f(x) = x² when it is transformed to
create the graph of h(x) = 1/5 f(x)?
The transformation performed on f(x) = x² to create h(x) = 1/5f(x) is the graph is compressed horizontally by the factor 1/5
What is transformation?Transformations are mathematical operations performed on a graph or function to change the shape, size or orientation of the graph or function.
Given that we have the function f(x) = x² and it is transformed into the graph h(x) = 1/5f(x).
We see that the transformation performed on f(x) to convert it to h(x) is dilation since it is multiplied by a factor less than 1. Since it it multiplied by a factor less than 1, f(x) is compressed horizontally by the factor 1/5 to give h(x)So, the graph is compressed horizontally by the factor 1/5
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How would you solve for m<ACD
The measure of angle ACD is approximately 109.5 degrees.
What are parallel lines ?
Parallel lines can be defined in which the lines which are equidistant to each other and they never intersect.
To solve for m<ACD, we can use the fact that the sum of the angles in a triangle is 180 degrees.
We can start by finding the measure of angle ACD, which is opposite to the known side length of 10 units. Using the Law of Cosines, we have:
cos(ACD) = (AD * AD + CD * CD - 100) / (2 * AD * CD)
We know that AD = 8 units and CD = 6 units, so plugging in these values, we get:
cos(ACD) = (64 + 36 - 100) / (2 * 8 * 6) = -1/3
Since -1/3 is negative, we know that angle ACD is obtuse, meaning it measures between 90 and 180 degrees. Therefore, we can take the inverse cosine of -1/3 to find its measure:
cos(ACD) = (-1/3) ≈ 109.5 degrees
Therefore, the measure of angle ACD is approximately 109.5 degrees.
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Please help me with this and show step by step solution, thank you all help is useful!
The distance between the intersection and the bank is equal to 77.0 feet.
What are the properties of similar triangles?In Mathematics, two (2) triangles are said to be similar when the ratio of their corresponding side lengths are equal and their corresponding angles are congruent.
Additionally, the lengths of corresponding sides are proportional to the lengths of corresponding altitudes when two (2) triangles are similar.
Note: Let the distance between the intersection and the bank be represented by the variable x.
By applying the properties of similar triangles, we have the following ratio of corresponding side lengths;
x/50 = 382/248
248x = 382(50)
x = 19,100/248
x = 77.0 feet.
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Complete Question:
The intersection of the two roads shown forms two similar triangles. If AC is 382 feet, MP is 248 feet, and the gas station is 50 feet from the intersection, how far from the intersection is the bank?
true or falsea linear system is ill-conditioned if its solution is highly sensitive to small changes in the problem data
In the following question, A linear system is ill-conditioned if its solution is highly sensitive to small changes in the problem data is said to be True.
What is a linear system? In mathematics, a linear system refers to a system of linear equations that can be expressed in matrix form as Ax = b. A is a matrix, x is a vector, and b is a constant vector. When working with linear systems, we must keep track of the numerical accuracy of the computations. When a small change in the matrix or constant vector produces a large change in the solution, the matrix is said to be ill-conditioned.
The mathematical concept of condition numbers measures the sensitivity of a matrix to changes in the problem data. If a matrix has a high condition number, it is said to be ill-conditioned, whereas if it has a low condition number, it is said to be well-conditioned. An ill-conditioned matrix is difficult to solve numerically because a small error in the input data can produce a large error in the computed solution.
Therefore, the statement that "a linear system is ill-conditioned if its solution is highly sensitive to small changes in the problem data" is correct, and it is true.
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Given the data below, which of the following statements correctly describes the relation of the point,(2,2),to the line of best fit?
The point (2,2) may be considered an anomaly and should be investigated further to determine if it is a valid data point or if it should be excluded from the analysis.
The relation of the point (2,2) to the line of best fit can be determined by analyzing the residual value of this point. The residual value is the difference between the actual y-value and the predicted y-value based on the line of best fit. If the residual value is close to zero, then the point lies on the line of best fit. If the residual value is positive, then the actual y-value is higher than the predicted y-value, and if the residual value is negative, then the actual y-value is lower than the predicted y-value.
Unfortunately, the data necessary to determine the residual value of the point (2,2) is not provided in the question. Therefore, it is impossible to determine the exact relation of this point to the line of best fit.
However, we can make some generalizations based on the location of the point relative to the trend of the data.
If the point (2,2) lies close to the line of best fit, with a residual value close to zero, then it can be said that the point follows the trend of the data and is a typical data point. However, if the point lies far away from the line of best fit, with a large positive or negative residual value, then it can be said that the point is an outlier and does not follow the trend of the data.
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probability sampling procedures are question 13 options: a) instances where every unit in the population has a non-zero chance of being selected b) every possible answer is correct c) typically used when population parameters are known to exist d) certain to eliminate random sample error
Probability sampling procedures are instances where every unit in the population has a non-zero chance of being selected. (Option a)
Probability sampling is a type of sampling method used in statistical analysis, where each member of the population has a known and equal probability of being selected. This means that every possible unit in the population has a non-zero chance of being selected for the sample.
Probability sampling methods include simple random sampling, systematic sampling, stratified sampling, and cluster sampling. These methods are typically used when population parameters are unknown or when the researcher wants to make generalizations about the population based on the sample data.
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Peter bought 100 shares of stock for $6.35 per share last year. He paid his broker a 2% commission. He sold the stock this week for $12.57 per share and paid his broker a $15 flat fee. What were Luis’s net proceeds?
The net proceeds for Luis would be amount $1,169.50. This is calculated by subtracting the cost of the stock (100 x $6.35 = $635) and the commission (2% of $635 = $12.70) from the sale of the stock (100 x $12.57 = $1,257) and subtracting the flat fee of $15. ($1,257 - $635 - $12.70 - $15 = $1,169.50).
The net proceeds for Luis from the sale of the stock were calculated by subtracting the cost of the stock, the commission fee, and the flat fee from the proceeds of the sale. The cost of the stock was 100 shares at $6.35 per share, which totaled amount $635. The commission fee was 2% of the cost of the stock, which was $12.70. The flat fee was a set fee of $15. The proceeds from the sale of the stock was 100 shares at $12.57 per share, which totaled $1,257. The net proceeds for Luis was calculated by subtracting the cost of the stock, the commission fee, and the flat fee from the proceeds of the sale, which was $1,257 - $635 - $12.70 - $15 = $1,169.50.
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Please help with 18! :)
Answer:
x = -13
Step-by-step explanation:
x+[tex]\frac{x+2}{3}[/tex]=-8
Step 1- You multiply both sides by 3
x + x + 2= -24
2x + 2 = -24
Step 2- You then minus 2 from both sides
2x = -26
Lastly, you divide both sides by 2
x = -13
And there you go!
Viola
Hope this helped
QUESTION 8
In the figure to the right, AB is parallel to CD.
What is the value of m?
A. 7°
B. 44°
C. 46°
D. 49°
Answer: B. 44°
if i'm wrong then its C
Nhan is getting dressed. He considers two different shirts, three pairs of pants, and three pairs of shoes. He chooses one of each of the articles at random. What is the probability that he will wear his jeans but not his sneakers?
Shirt
Pants
Shoes
collared
khakis
sneakers
T-shirt
jeans
flip-flops
shorts
sandals
does the line ever match up perfectly? can the lines ever have the same slope? can the lines ever have the same y-intercept? why or why not?
No, the lines cannot ever match up perfectly because there is always some sort of difference between them. The lines can have the same slope if they have the same change in y-values for a given change in x-values. The lines can also have the same y-intercept if they cross the y-axis at the same point.
No, there will never be a perfect alignment between the lines since there will always be a discrepancy of some kind. However, the lines can have the same slope and y-intercept. This is possible because the slope and y-intercept are determined by the equation of the line, and if two lines have the same equation, then they will have the same slope and y-intercept.
If the lines intersect the y-axis at the same location, they can also have the same y-intercept. This means that the two lines have the same value of b in the equation y = mx + b. This means that the two lines have the same slope and the same y-intercept.
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stemjock in each of problems 18 through 22, use the method of reduction of order to find a second solution of
Using the method of reduction of order, you can find a second solution to Problems 18-22.
In this method, we assume the second solution will have the same form as the first one, but with different constants of integration. To find the second solution, we substitute the first solution into the differential equation and solve for the remaining constant.
To illustrate, let's say Problem 18 is:
$$y''-2y'+y = 0$$
We start with a first solution of the form: $y_1=e^rx$.
Substituting this into the differential equation, we get:
$$r^2e^rx -2re^rx+e^rx=0$$
Rearranging and dividing by $e^rx$ yields:
$$r^2 -2r+1=0$$
Using the quadratic formula, we find two possible solutions for $r$:
$r=1$ and $r=-1$
Using these two values for $r$, we can write our two solutions as:
$y_1 = e^x$ and $y_2 = e^{-x}$
This same method can be applied to Problems 19-22 to find the second solution.
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A $12 box of chocolate on sale for 20% off. What is the sale price
A box of chocolate on sale for 20% means that 80% of its original value remain.
Therefore, the sale price of the box of chocolate = $12 x 80% = $9.6
The sales price of box of chocolates is 9.6 dollars.
Given that, a $12 box of chocolate on sale for 20% off.
A sale price is the discounted price at which goods or services are being sold.
Here, sales price = Original price - 20% of Original price
= 12 - 20% of 12
= 12 - 20/100 ×12
= 12 - 0.2×12
= 12 - 2.4
= $9.6
Therefore, the sales price of box of chocolates is 9.6 dollars.
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A one-to-one function is given. Write an expression for the inverse function. f(x)=√x+7 Select one: O af¹¹(x)=x²-7 Ob. f¹(x)=(x-7)³ O c.f¹(x) = (x + 7)³ O d. f¹(x)=x³ +7
The correct option B. The expression for the inverse is f¹(x) = (x - 7)².
A one-to-one function is given. We have to write an expression for the inverse function.
Given function: f(x)=√x+7
The inverse of a function is found by switching the x and y coordinates and solving for y.
So, the expression for the inverse function will be:
f¹(x) = y = √x + 7 ... (1)
Replace x with y and simplify to isolate y from the radical.
y = √x + 7
=> y - 7 = √x
=> (y - 7)² = x
Hence, the inverse of the given function is given byf¹(x) = (x - 7)².
So, the correct option is B) f¹(x)=(x-7)².
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what polynomial has a graph that passes through the given points? (-4,89),(-3,7),(-1,-1),(1,-1),(4,329)
The polynomial (D) y = x4 + 2x3 – 3x2 – 2x + 1 has the graph that passes through the points (–4, 89), (–3, 7), (–1, –1), (1, –1), (4, 329) respectively.
What is a polynomial?A polynomial is a mathematical statement made up of coefficients and indeterminates that uses only the operations addition, subtraction, multiplication, and powers of positive integers of the variables.
A polynomial is a mathematical equation that solely uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables.
Variables are sometimes known as indeterminates in mathematics.
x² 4x + 7 is an illustration of a polynomial with a single indeterminate x.
So, substitution and trial-and-error are the best ways to solve this problem given the various points and equations that are available as options.
In this regard, we change the equations' examples from 4 to x and see which one produces 89. The solution is D.
Therefore, the polynomial (D) y = x4 + 2x3 – 3x2 – 2x + 1 has the graph that passes through the points (–4, 89), (–3, 7), (–1, –1), (1, –1), (4, 329) respectively.
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Complete question:
What polynomial has a graph that passes through the given points? (–4, 89), (–3, 7), (–1, –1), (1, –1), (4, 329)
a)y = 2x3 – 3x2 – 2x + 1
b)y = 1x4 – 2x3 – 3x2 + 2x + 1
c)y = x4 – 2x3 + 3x2 + 2x – 1.
d)y = x4 + 2x3 – 3x2 – 2x + 1
find the degrees of freedom and the critical value t* that you would use for a confidence interval for a population mean in each of the following settings. a) an 80% confidence interval based on a random sample of 25 observations. b) a 98% confidence interval from an srs of 55 observations.
a) The degree of freedom for a sample size 25 is equals to the 24 and the critical value t* for 80% confidence interval and degree of freedom 24 is equals to 1.318.
b) The degree of freedom for a sample size 55 is equals to the 54 and the critical value t* for 98% confidence interval and degree of freedom 54 is equals to 2.403.
The t-distribution has a bell-shaped density curve but has more variance (spread) than a normal bell curve.
Degrees of freedom: The degrees of freedom of a t-distribution is represented by n−1 for a sample of size n.critical value: The critical t-value for a confidence level c and sample size n is obtained by following below steps,Step 1: First express the confidence level as a number (in decimal) c with 0<c<1.
Step 2: Determine the significance level, denoted
α, by α = 1 − c.
Step 3: Use the t-distribution table to obtain the t-score (critical value) tα/2 where (i) the α is from Step 2 and (ii) the degrees of freedom equals n−1, where n is the sample size.
a) 80% of confidence interval and observation of
Sample size, n = 25
From above definition, degree of freedom= n - 1 = 25 - 1 = 24 and c = 80%
= 0.80
Significance level, α = 1- c = 1 - 0.80 = 0.20
and α/2 = 0.10 then use the t-table the critical t-value for this 80% confidence interval, t₀.₁₀ = 1.711.
b) 98% confidence interval with 55 observations. So, Sample size, n = 55
degree of freedom = n - 1 = 55 - 1 = 54,
c = 98% = 0.98
Significance level, α = 1-0.98 = 0.02
and α/2 = 0.01, then use the t-table the critical t-value for this 98% confidence interval, t₀.₀₁ = 2.669
Hence required value is 2.669.
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Evaluate. 547+233×5−142 whats this anwser?
The answer is 1570. To evaluate the expression 547+233×5−142, we need to follow the order of operations, which is PEMDAS (parentheses, exponents, multiplication and division, and addition and subtraction).
There are no parentheses or exponents, so we start with multiplication and division from left to right.
233×5 = 1165
Then, we can simplify the expression to:
547 + 1165 - 142
Next, we add and subtract from left to right:
547 + 1165 = 1712
1712 - 142 = 1570
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a doctor prescribes 3 g of a drug, daily, for a patient. the pharmacist has only 750 mg tablets available. how many tablets will the patient take daily?
The patient needs to take 4 tablets daily to receive the prescribed dose of 3 grams of the drug.
To determine how many tablets the patient needs to take daily, we need to divide the total amount of the drug prescribed by the dose of each tablet.
Since the patient is prescribed 3 grams of the drug daily, we first need to convert this to milligrams (mg), as the tablets are available in milligram form.
1 gram = 1000 milligrams, so 3 grams = 3,000 milligrams
The pharmacist has 750 mg tablets available, so we can calculate the number of tablets the patient needs to take daily by dividing the prescribed dose by the dose of each tablet:
Number of tablets = Prescribed dose ÷ Dose per tablet
Number of tablets = 3,000 mg ÷ 750 mg
Number of tablets = 4
Therefore, the patient needs to take 4 tablets daily to receive the prescribed dose of 3 grams of the drug.
Therefore, the patient will take 4 tablets daily.
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The function g(x) is shown on the graph.
The graph shows an upward opening parabola with a vertex at negative 3 comma negative 2, a point at negative 5 comma 2, and a point at negative 1 comma 2.
What is the equation of g(x) in vertex form?
g(x) = (x − 3)2 − 2
g(x) = (x − 3)2 + 2
g(x) = (x + 3)2 − 2
g(x) = (x + 3)2 + 2
Answer:
g(x) = (x + 3)2 - 2
Step-by-step explanation:
I think that's the one I just did this class so
a new state employee is offered a choice of seven basic health plans, four dental plans, and two vision care plans. how many different health-care plans are there to choose from if one plan is selected from each category?
There are 56 different health-care plans to choose from if one plan is selected from each category.
To calculate the total number of different health-care plans, we need to multiply the number of options in each category.
Number of basic health plans = 7
Number of dental plans = 4
Number of vision care plans = 2
Using the multiplication principle of counting, the total number of different health-care plans is:
7 x 4 x 2 = 56
Therefore, there are 56 different health-care plans to choose from if one plan is selected from each category.
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a number is equal to . what is the smallest positive integer such that the product is a perfect cube?
The smallest positive integer y such that the product xy is a perfect cube is 3.
To find the value of y, we need to factorize x, which is 7 * 24 * 48.
We can then find the prime factorization of xy, which will help us determine the smallest integer y that will make the product a perfect cube.
Since 7, 24, and 48 are already factored, we can express x as:
x = 2⁴ * 3 * 7²
To make xy a perfect cube, we need to ensure that the exponents of all the prime factors are multiples of 3.
Therefore, we need to add a factor of 3 to the exponent of 2 in x to make it a multiple of 3. This gives us:
xy = 2⁷ * 3² * 7²
The smallest integer y that can make this product a perfect cube is 3, because we need to add a factor of 1 to the exponent of 2 in xy to make it a multiple of 3, and the smallest integer that can achieve this is 3.
Thus, the smallest positive integer y such that the product xy is a perfect cube is 3.
The question is: A number x is equal to [tex]$7\cdot24\cdot48$[/tex]. What is the smallest positive integer y such that the product xy is a perfect cube
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Geometry, Help Please hurry!!!
In the diagram, ABCD is Similar EFGH. Find the following,
4. Scale Factor
5. EH
6. AB
Scale Factor is equal to [tex]\frac{2}{3}[/tex]. Length of EH is equal to 16 units and length of AB is equal to 9.
4. A scale factor is the ratio of the scales of an original object and a new object.
Scale factor = Ordinated dimension / original dimension
Scale factor = [tex]\frac{10}{15}[/tex]
Scale factor = [tex]\frac{2}{3}[/tex] (or) 0.67
5. Length of EH
Scale factor = [tex]\frac{EH}{AD}[/tex]
[tex]\frac{EH}{AD}[/tex] = [tex]\frac{2}{3}[/tex]
[tex]\frac{EH}{24} = \frac{2}{3}[/tex]
EH = 2 * 8
EH = 16 units
6. Length of AB
Scale factor = [tex]\frac{EF}{AB}[/tex]
[tex]\frac{EF}{AB}[/tex] = [tex]\frac{2}{3}[/tex]
[tex]\frac{6}{AB} = \frac{2}{3}[/tex]
AB = 3 * 3
AB = 9 units.
Therefore, Scale Factor is equal to [tex]\frac{2}{3}[/tex]. Length of EH is equal to 16 units and length of AB is equal to 9.
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Hannah put 2,364 pieces of candy into a bags with 57 pieces of candy each. How many full bags did she make?
2,364 ÷ 57 ≈ 41. Therefore, Hannah made 41 full bags of candy.
To solve this problem, we use integer division to find the number of full bags Hannah made. We divide the total number of candy pieces by the number of pieces in each bag and take the integer part of the result. This is because we are only interested in the number of full bags, not partial bags. In this case, we have 2,364 pieces of candy and each bag holds 57 pieces, so 2,364 ÷ 57 ≈ 41. This means that Hannah made 41 full bags of candy.
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what effect does increasing the sample size, n, have on the center of the sampling distribution of sample means?
Increasing the sample size leads to a more accurate estimation of the population mean.
What is Probability ?
Probability can be defined as ratio of number of favourable outcomes and total number outcomes.
As the sample size, n, increases, the center of the sampling distribution of sample means becomes more precise and closer to the true population mean. This is known as the central limit theorem, which states that as the sample size increases, the distribution of sample means becomes approximately normal with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
In other words, as we take larger and larger samples, we are more likely to obtain sample means that are closer to the true population mean. This is because larger samples are less affected by random fluctuations and more likely to provide a representative picture of the population as a whole.
Therefore, increasing the sample size leads to a more accurate estimation of the population mean.
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Jen's total assets are $6,964. Her liabilities are $1,670 in credit card debt and $3,642 for a student loan. What is her net worth?
Responses
$1,652
$1,652
$6,964
$6,964
$5,312
$5,312
$12,276
$12,276
Answer: $1,652.
Step-by-step explanation:
To calculate Jen's net worth, we need to subtract her liabilities from her total assets:
Net worth = Total assets - Liabilities
In this case, Jen's total assets are $6,964, and her liabilities are $1,670 for credit card debt and $3,642 for a student loan. So:
Net worth = $6,964 - $1,670 - $3,642
Net worth = $1,652
Therefore, Jen's net worth is $1,652. Answer: $1,652.
The expected value of the number of points for one roll is:_____.a. 0 b. 1 c. 3 d. 6
Answer:
2023- answer is A-0
Step-by-step explanation:
the sum of shannon and john’s ages is 70 shannon is 4 times as old as john
i need help pleaseeeeeee
By using the definition of inverse functions we can see that:
a) g(7) = -10
b)(-10,7) is a point on h(x).
c)(7, -10) is a point on j(x)
How to evaluate the functions?Remember that if two functions f(x) and g(x) are inverses, then:
f(y) = x
g(x) = y
And also g(f(x)) = x = g(f(x)).
Here we know that functions h(x) and j(x) are inverses, and we also know that:
h(-10) = 7
So for the input -10, we have the output 7.
Then, by using the relation written above, we know that for the inverse function we must have:
j(7) = -10
That is the answer for a.
And for b and c the notation is (input, output), then:
(-10, 7) is a point on h.(7, -10)is a point on jThese are the answers of points B and C of the question.
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Please answer asap!!
The function f(x) = sec(x) has no x-intercepts.
The y-intercept of the graph of f(x) = sec(x) is (0, 1).
Graph of a Trigonometric functionFrom the question, we are to identify any x-intercepts and y-intercepts of the graph of f(x) = sec(x).
The function f(x) = sec(x) is defined as the reciprocal of the cosine function, that is:
f(x) = 1 / cos(x)
The cosine function has a zero at x = π/2 + nπ, where n is an integer.
At these values of x, the denominator of the secant function becomes zero, and the function becomes undefined.
Therefore, the function f(x) = sec(x) has no x-intercepts.
To find the y-intercept, we need to evaluate the function at x = 0, which gives:
f(0) = 1 / cos(0) = 1 / 1 = 1
Hence, the y-intercept of the graph of f(x) = sec(x) is (0, 1).
The graph of the function f(x) = sec(x) is shown below.
Learn more on Graph of a Trigonometric function here: https://brainly.com/question/31249124
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