Comparing the functions f(x) = ln (x) and [tex]f^{-1}(x) = e^x[/tex], we can conclude that the domain of [tex]f^{-1}(x)[/tex] is all real numbers and the range is all real numbers greater than 0.
Given function is the logarithmic function f(x) = ln(x).
Now, f(x) has a domain(D) of all real numbers greater than zero and a range(R) of all real numbers.
i.e., f : D → R defined by f(x) = ln(x)
So if an inverse exist for f(x), then, [tex]f^{-1}(x)[/tex] will have R as its domain and D as its range.
i.e., [tex]f^{-1}[/tex] : R → D defined by [tex]f^{-1}(x) = e^x[/tex].
Because f( [tex]f^{-1}(x)[/tex] ) = ln([tex]e^x[/tex]) = x, that is the identity function.
So [tex]e^x[/tex] is the inverse of ln(x).
Also, the domain of [tex]f^{-1}(x)[/tex] is all real numbers and the range is all real numbers greater than 0.
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Answer:
C. The domain of f–1(x) is all real numbers and the range is all real numbers greater than 0.Step-by-step explanation:
What information do you need to find a term of a sequence using an explicit formula?
The explicit formula can be found in three easy steps. Find the first term and the common difference of the arithmetic sequence first. Replace the values in the explicit formula's nth term.
What is sequence?An ordered group of numbers with a shared difference between each succeeding word is known as an arithmetic sequence. For instance, the common difference in the arithmetic series 3, 9, 15, 21, and 27 is 6.
Arithmetic sequences are sequences containing these patterns. The distance between succeeding terms in an arithmetic series is always the same. The difference between consecutive words is always two, hence the sequence 3, 5, 7, 9... is arithmetic.
An explicit formula that states a = d (n - 1) + c, where d is the common difference between succeeding words, and c = a1, can be used to establish an arithmetic sequence.
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What is the sum of each finite series?
c. Σ¹°° n=0 (-1)n
The sum of the given finite series is -5050
The summation notation is used to expressed a long summation into a single formula.
Expand the sum of the given finite series:
[tex]\sum\limits^{100}_{n=0} {(-1)n} =0-1-2-3-...-100[/tex]
The right side is an arithmetic series. We can ignore the 0 in the first term, so the arithmetic series is:
-1 -2 - 3 -4 - ... - 100
We get:
a(1) = -1
d = -2 - (-1) = -1
a(n) = -100
n = 100
Substitute these parameters into the sum formula:
S(n) = n/2 [a(1) + a(2)]
S(100) = 100/2 [-1 + (-100)]
S(100) = 50 . (-101) = -5050
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URGENT PLSS ANSWER!!!
When Jessica woke up in the morning, the temperature was 12 degrees below zero outside. By the afternoon, the temperature rose to 24 degrees outside. What was the difference in temperature from morning to afternoon?
Step-by-step explanation:
12 degres below 0 is -12°C ..so the temperature rose from -12°C to 24°C
The difference now from Morning to afternoon is
=24°C-(-12°C)
=24°C+12°C
=36°C
Write the equation of each line in slope-intercept form and identify the slope.
2 x-y=9
The equation of the line 2x - y = 9 expressed in slope-intercept form is y = 2x - 9 with a slope equal to 2.
The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.
The slope-intercept form of the equation of a line is given by the formula:
y = mx + b
where m is the slope of the line
b is the y- intercept
Given the equation of the line 2x - y = 9, which is in standard form, transform it into slope-intercept form by isolating the variable y in one side.
2x - y = 9
y = 2x - 9
Hence, the equation of the line in slope-intercept form is y = 2x - 9 where the slope is equal to m = 2.
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Solve x in the given equation -3x + 2c = -3
Answer:
[tex]x = 1 + \frac23c[/tex]
Step-by-step explanation:
Hello!
Solve for x by isolating the variable.
Solve for x-3x + 2c = -3 Subtract 2c from both sides-3x = -3 - 2c Divide both sides by -3x = [tex]\frac{-3 - 2c}{-3}[/tex] Simplifyx = [tex]1 + \frac23c[/tex]The solution for x is [tex]x = 1 + \frac23c[/tex].
Please help i'm very confused :')
Answer:
Mean: 76
Median: 69
Mode: 63
Range: 46
Standard deviation: 15.5
Step-by-step explanation:
Given:
Mean = 62Median = 55Mode = 49Range = 46Standard deviation = 15.5If each value in the data set is increased by a constant k, the mean, median, and mode will be increased by k.
The range and standard deviation will remain unchanged.
Therefore, if each value in the data set is increased by 14:
Mean: 62 + 14 = 76Median: 55 + 14 = 69Mode: 49 + 14 = 63Range: 46Standard deviation: 15.5
Write a two-column proof.
Given: BA ≅ DC, ∠ B A C ≅ ∠ D C A
Prove: BC ≅ DA
We can conclude that BC ≅ DA is congruent under corresponding parts of congruent triangles.
What clearly does the term "triangle congruency" mean?Two triangles are said to be congruent if all three corresponding sides are equal and all three corresponding angles are equal in measure.These triangles can be moved, rotated, flipped, and turned to appear identical.If they are repositioned, they will coincide.If two triangles satisfy the five congruence conditions, they are congruent.They are the side-side-side (SSS), side-angle-side (SAS), angle-side-angle (ASA), angle-angle-side (AAS), and right angle-hypotenuse-side (RHS).So,
Given: BA ≅ DC, ∠ B A C ≅ ∠ D C A
To Prove: BC ≅ DA
First, we'll prove the △BAC ≅ △DAC
BA = DC = Given∠BAC = ∠DCA = GivenAC = AC = Common baseSo, △BAC ≅ △DAC under SAS conditions.
Then we can say that BC ≅ DA is under (CPCT).Therefore, we can conclude that BC ≅ DA is congruent under corresponding parts of congruent triangles.
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PLEASE PLEASE HELP !!!!
Which function represents the equation of the line?
Step-by-step explanation:
when x increases by 1. y decreases by 7.
e.g. from (-4, 7) to (-3, 0).
the slope is therefore -7/1 = -7.
the slope is always the factor of x in the equation.
y = -7x + b
b is the y-intercept (the y value when x = 0).
let's use e.g. (-3, 0) to get b :
0 = -7×-3 + b = 21 + b
b = - 21
so, the full equation is
y = -7x - 21
Find the missing term(s) of each arithmetic sequence. 2,□, □,□,-0.4,. . . .
The missing terms are 1.4, 0.8, 0.2
The series is ,
2, __, __, __, -0.4,...
To find the missing terms of the arithmetic sequence , we need to find the the common difference (d).
So formula to find the value of d
[tex]t_{n}[/tex] = a+ (n-1)d
Where [tex]t_{n}[/tex]= nth term of the series
a = first value of the sequence
n = number of terms
Here
[tex]t_{5}[/tex]= -0.4
a = 2
n = 5
-0.4= 2 + 4d
d = -0.6
Now we will add -0.6 from the first number of the series, so we get
[tex]t_{2}[/tex] = 2+(-0.6)
=2-0.6
= 1.4
[tex]t_{3}[/tex] = 1.4 - 0.6
= 0.8
[tex]t_{4}[/tex] = 0.8 - 0.6
0.2
Therefore the Missing terms of the series = 1.4, 0.8, 0.2
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pls help i need answers fast will give brainliest
Using the converse of same-side interior angle theorem, the complete proof that shows why lines l and m are parallel is explained below.
What is the Converse of Same-Side Interior Angles Theorem?According to the converse of same-side interior angle theorem, if two same-side interior angles that are formed on two lines that are intersected by a transversal are supplementary, then the two lines are parallel to each other.
To prove that lines l and m are parallel to each other, the following proof with statements and reasons that justify each are given below:
Statement Reasons
1. <2 and <5 are supplementary 1. Given
2. <3 ≅ <2 2. Vertical angles theorem
3. <3 and <5 are supplementary 3. Transitive property
4. l║m 4. converse of same-side interior
angle theorem
Thus, using the converse of same-side interior angle theorem, the complete proof that shows why lines l and m are parallel is given above.
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Which are the factor pairs of 34?
1,34
2,17
3,11
4,8
5, 29
Answer: (1, 34) and (2, 17)
Step-by-step explanation:
Step 1: Divide 34 by the smallest prime factor.
34/2 = 17
Step 2: Since 17 itself is a prime number, therefore, it is divisible by 17 only.
17/17 = 1
Step 3: Now further division is not possible. Thus, we will consider 2 and 7 as the prime factors of 34.
Solve the inequality.
6 x+9<7 x
For the given inequality 6 x+9<7 x, x is greater than 9
Inequality is the relation between two expressions linked by the arithmetic expression other than equal sign. Such as less than (<), greater than (>), less than equal to (<=) and greater than equal to (>=).
Let's solve the inequality
6 x+9<7 x
Separate the variables and constants by moving them on the same side. Such as
9<7x-6x
9<x
We want to keep the variable on the left side. Then, just interchange the positions.
x>9
Therefore, it is clear that x is greater than 9.
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Points that are on the same line are collinear. Use the definition of slope to determine whether the given points are collinear.Prove that the quadrilateral with vertices (2,5),(4,8),(7,6) , and (5,3) is a rectangle.
The quadrilateral with vertices (2 , 5), (4 , 8), (7 , 6), and (5 , 3) is a rectangle.
The slope, m, determines the steepness of a line. It can be measured by the vertical distance from one point to another divided by the horizontal distance of the same points.
m = (y2 - y1)/(x2 - x1)
In a rectangle, each pair of adjacent side/line is perpendicular with each other, thus, the slope is negative reciprocal of one another. Also, opposite sides are parallel, thus their slopes are equal.
let A = (2 , 5)
B = (4 , 8)
C = (7 , 6)
D = (5 , 3)
slope of AB = slope of CD(8 - 5)/(4 - 2) = (3 - 6)/(5 - 7)
3/2 = -3/-2
3/2 = 3/2
slope of BC = slope of AD(6 - 8)/(7 - 4) = (3 - 5)/(5 - 2)
-2/3 = -2/3
slope of AB = negative reciprocal = slope BC(8 - 5)/(4 - 2) = (6 - 8)/(7 - 4)
3/2 = -2/3
slope of BC = negative reciprocal = slope CD(6 - 8)/(7 - 4) = (3 - 6)/(5 - 7)
-2/3 = 3/2
slope of CD = negative reciprocal = slope AD(3 - 6)/(5 - 7) = (3 - 5)/(5 - 2)
3/2 = -2/3
slope of AD = negative reciprocal = slope AB(3 - 5)/(5 - 2) = (8 - 5)/(4 - 2)
-2/3 = 3/2
Using the slope of the line connecting the vertices, we have proved that the quadrilateral with vertices (2 , 5), (4 , 8), (7 , 6), and (5 , 3) is a rectangle.
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3. If a-b=0, then either a = 0 or b=0. True or False
Answer:
true
Step-by-step explanation:
Write an equation of the line in standard form with the given slope through the given point.slope = (2/5),(6,7)
The point-slope form be y - 7= 0.4(x - 6) then 0.4x - y = -4.6 be the standard form.
How to write the equation in point-slope form?Given:
(x1, y1) = (6, 7)
The value of m = 2/5
The point-slope form is given by, y - y1 = m(x - x1)
substitute the values in the above equation, we get
y - 7 = 2/5(x - 6)
simplifying the equation,
y - 7 = 0.4(x - 6)
Therefore, the point-slope form is y - 7= 0.4(x - 6)
How to rewrite the equation in standard form?Standard form is Ax + By = C
Since, slope-intercept form is y = 0.4x + 4.6
⇒ 0.4x - y = -4.6
Therefore, 0.4x - y = -4.6 is the standard form.
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Nick has put a laptop computer on layaway. The cost of the computer before sales tax is $599. The
layaway fee is 1.20% of the price. Sales tax is 7.25%. How much will Jared have to pay before taxes for his
new computer?
a. $606.19
b. $619.00
c. $479.20
d. $642.43
The amount that Jared needs before taxes for his new computer is $606.19
What does before-tax price mean?
The before-tax price means the amount that Nick needs to acquire the laptop before considering the sales tax of 7.25%, but after having factored in the layway fee of 1.2%
before-tax price=cost of computer*(1+layway fee %)
cost of computer=$599
layway fee=1.20%
before-tax price=$599*(1+1.2%)
before-tax price=$ 606.19
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Evaluate f(x)=3x+1 over the domain {1,2,3,4}. What is the range of f(x)?
Scale the numerator and the denominator down by a factor of 4 (divide) to write a fraction equivalent to 24 56
The fraction equivalent to 24 /56 is 6/14.
What is fraction?
A fraction having whole numbers for the numerator and denominator. A fraction is a number of the form: ab where a and b are integers and b≠0. It represents the division of two numbers.
Given:
Scale the numerator and the denominator down by a factor of 4.
According to given question we have
Down by a factor of 4 means divide by 4.
when you scale the numerator and denominator down by 4, you just divide both of them by 4.
So since 24 divided by 4 is 6 and 56 divided by 4 is 14,
The answer is 6/14.
Therefore, the fraction equivalent to 24 /56 is 6/14.
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Round...
1.
Down
3.
24.263 to the nearest tenth.
5.
341.276 to the nearest hundredth.
299.61 to the nearest whole number.
4,123.499 to the nearest whole number.
7. 5.246 to the nearest hundredth.
6.
Answer:
Hope this helps :)
24.263 = 24.3
341.276 = 341.28
299.61 = 300
4,123.499 = 4,123
5.246 = 5.25
Step-by-step explanation:
When rounding first look at the number next to the place that is told to rounded to (for example, they tell you to round to nearest tenth, then look at the place value next to it). If that number is 1, 2, 3, or 4 then round down, and if that number is 5, 6, 7, 8, or 9 then round up.
a. Write two explicit formulas for arithmetic sequences.
Explicit formulas for arithmetic sequences are derived from terms in arithmetic sequences. It helps to find each term in arithmetic progression easily. The arithmetic progression is a1, a2, a3, ..., an. where the first term is denoted as 'a', we have a = a1, and the tolerance is denoted as 'd'. The tolerance formula is d = a2 - a1 = a3 - a2 = an - an - 1. The nth term of the arithmetic progression represents the explicit formula for the arithmetic progression.
Explicit formula: an= a + (n − 1) d
Explicit formula: Sn = n/2 [2a+(n-1) d]
Where,
nth term in the arithmetic sequence
a = first term in the arithmetic sequence
d = difference (each term and its term difference) previous term, i.e., d = an-an-1
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Help quick please
MODELING REAL LIFE You jump off a diving board
into a pool. You reach a maximum height of 25 feet
after traveling 1 foot horizontally, and hit the water
6 feet from the diving board. The path of your dive
can be modeled by a parabola, where y is the height
(in feet) and x is the horizontal distance traveled (in
feet). What is the height of the diving board?
Finding the equation of the parabola, it is found that the height of the diving board is of 24 feet.
What is the equation of a parabola given it’s vertex?The equation of a quadratic function, of vertex (h,k), is given by:
y = a(x - h)² + k
In which a is the leading coefficient.
From the maximum height, it is found that the vertex is at (1,25), hence:
h = 1, k = 25.
Hence:
y = a(x - 1)² + 25.
You hit the water 6 feet from the diving board, hence y(6) = 0, meaning that we use it to find a as follows:
0 = a(6 - 1)² + 25
25a = -25.
a = -1.
Hence:
y = -(x - 1)² + 25.
The height of the diving board is y(0), hence:
y = -(0 - 1)² + 25 = -1 + 25 = 24 feet.
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1.
20
Required
Kamyle had 17 math problems for homework. If she finished 8 of them on the bus ride
home, how many more did she have to do?
Answer:
Step-by-step explanation:
x = number of math problems left to do
x + 8 = 17
x = 17 -8
x = 9
Kamyle needs to do 9 more math problems
distributive law
4 ( 32+9x)
9x (2+8x)
12(x-y)
2(21x)
Use the graph to interpret and match the appropriate intervals with their descriptions. Drag the tiles to the correct boxes. Not all tiles will be used. (-6.3,10) (4.9,10)(-9,0)(-3,10)(0,4.9)(-9,-3)
the order of titles according to the correct description boxes is (0, 4.9), (-3,10), (-9, -3) and then (4.9, 10) respectively.
We first look at the graph, and then, we analyze it, completing the tiles.
From the graph, the function is increasing in two intervals (-10,-9) and (4.9,10). The function is increasing over two interval, (-10, -9) and (4.9,10) , so the corresponding tile is (4.9, 10) for increasing in two intervals.
Between -9 and 4.9 the function is decreasing, so the corresponding tile is (0, 4.9).
An interval where the function is above the x-axis, so between -9 and -3, and then above 10, so the corresponding tile is (-9,-3) for interval over which the difference is positive.
Interval over which the difference is negative is when an interval where the function is below the x-axis, so before -10, and then between -3 and 10. Thus the corresponding tile is (-3,10).
Therefore, we can conclude the following relations
interval in which difference of the number of sales is decreasing→ (0, 4.9)
interval over which difference of the number of sales is negative→ (-3,10)
interval over which difference of the number of sales is positive→ (-9, -3)
interval in which difference of the number of sales is increasing→ (4.9, 10)
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Which constant should be added to the binomial x^2-14x so that it becomes a perfect square trinomial?
A. 49
B. 36
C. 16
D. 25
Answer:
A
Step-by-step explanation:
x² - 14x
using the method of completing the square
add ( half the coefficient of the x- term )² to x² - 14x
x² +2(- 7)x + (- 7)²
= x² - 14x + 49
= (x - 7)² ← perfect square
Solve each system by substitution. Check your answers. x + 6y = 2 , 5x + 4y = 36
By substitution, the solution of the system of equations, x + 6y = 2 and 5x + 4y = 36, is (8 , -1).
A system of linear equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy both equations.
There are three methods that can be used to solve system of linear equations.
1. Elimination
2. Substitution
3. Graphing
Using substitution method, given two linear equations in x and y,
x + 6y = 2 (equation 1)
5x + 4y = 36 (equation 2)
Using the first equation, find the value of one variable, lets say x, in terms of the other.
x + 6y = 2 (equation 1)
x = 2 - 6y
Substitute the value of x to the second equation.
5x + 4y = 36 (equation 2)
5(2 - 6y) + 4y = 36
10 - 30y + 4y = 36
Combining all terms containing the variable y on one side and the constants on the other side of the equality, and solving for y.
10 - 30y + 4y = 36
-30y + 4y = 36 - 10
-26y = 26
y = -1
Substitute the value of y in the equation of x.
x = 2 - 6y
x = 2 - 6(-1)
x = 2 + 6
x = 8
Hence, the solution of the given system of equations is (8 , -1).
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-3 4/9 * 5 2/5 help me please
Answer:
-18.6
Step-by-step explanation:
I simply just did multiplication
I multiplied the whole numbers alone and did the same with the fraction
then you add the two products and get your answer
What is the slope-intercept equation of the line with a slope of -13 that goes
through (5, 7)?
The slope-intercept equation of the line with a slope of -13 that goes
through (5, 7)
y = -13x + 72
point slope form: y = MX + b
m = slope, b = y-intercept
y = -13x + b through (5,7)
Use the given point as (x,y) to find b
7 = -13(5) + b
7 = -65 + b
b = 72
y = -13x + 72
In Mathematics, a slope of a line is the change in y coordinate with respect to the change in x coordinate. the web change in the y-coordinate is represented by Δy and the net change in the x-coordinate is represented by Δx. Where “m” is the slope of a line. So, tan θ to be the slope of a line. Pick two points on the road and determine their coordinates.
Determine the difference in y-coordinates of those two points (rise). Determine the difference in x-coordinates for these two points (run). Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope). Whenever the equation of a line is written within the form y = MX + b,
it's called the slope-intercept form of the equation. The m is the slope of the line. And b is that the b in the point that is the y-intercept (0, b). for instance, for the equation y = 3x – 7, the slope is 3, and therefore the y-intercept is (0, −7).
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the sum of two numbers is 68 and the difference is 12. What are the numbers?
Answer:
40, 28
Step-by-step explanation:
Let the numbers be x and y. The sum of two numbers is 68 and the difference is 12.
[Assuming x > y]
x + y = 68x - y = 12Now add these equations,
[tex]\Rightarrow[/tex] x + y + x - y = 68 + 12
[tex]\Rightarrow[/tex] 2x = 80
[tex]\Rightarrow[/tex] x = 40
Then, y = 68 - 40 = 28
Hence,
The required numbers are:
Greater = 40Smaller = 28Some tips:
Always incline towards using variables to get the results first, instead of hit n trial.Here y was eliminated when we added the equations. So always try to deduce the equations into a single variable.Cross check by placing the variable in the equation after u get the results.Consider the expression 9x + 2
9x is the ___ term
A. constant
B.Variable
Answer:
B
Step-by-step explanation:
9x is the variable in the question