Answer:
For f(x) = x^2 - 2x + 1, the inverse is g(x) = √x + 1
For f(x) = 2 - 5*x the inverse is g(x) = (2 - x)/5
For f(x) = 5*(x - 2) the inverse is g(x) = x*(1/5) + 2
for f(x) = (x - 2)^2 - 1 the inverse is g(x) = √(x + 1) + 2
Step-by-step explanation:
If we have two functions f(x) and g(x) such that these functions are inverse, then we have:
f( g(x)) = x
and
g( f(x)) = x
Let's start with the function:
f(x) = x^2 - 2x + 1
Notice that we can rewrite this as:
f(x) = x^2 - 2*x + 1 = (x - 1)^2
Because this is a quadratic function, the inverse function needs to have a square root, then the inverse function can be the third or fourth one.
Let's try with the last one:
g(x) = √x + 1
Then:
f( g(x)) = ( √x + 1 - 1)^2 = (√x )^2 = x
g( f(x)) = √(x - 1)^2 + 1 = (x - 1) + 1 = x
Then for the function:
f(x) = x^2 - 2x + 1, the inverse is: g(x) = √x + 1
Now let's find the inverse for the second function:
f(x) = 2 - 5*x
The inverse of this function will be also a linear function, and the slope of the inverse will be the inverse of this slope, then the inverse may be the first or second options.
Let's try with:
g(x) = (1/5)*x - 2
Then:
f( g(x) ) = 2 - 5*((1/5)*x - 2) = 2 - x + 10
Then this g(x) is not the inverse of the function.
Let's try with g(x) = (2 - x)/5
Then:
f( g(x)) = 2 - 5*(2 - x)/5 = 2 - 2 + x = x
g( f(x)) = (2 - 2 - 5*x)/5 = 5*x/5 = x
For the function f(x) = 5*(x - 2)
The inverse should be the remaining linear function:
g(x) = x*(1/5) + 2
Then:
f( g(x)) = 5*(x*(1/5) + 2 - 2) = 5*x*(1/5) = x
g( f(x)) = (5*(x - 2) )*(1/5) + 2 = (x - 2) +2 = x
For the last function, f(x) = (x - 2)^2 - 1
The inverse function will be:
g(x) = √(x + 1) + 2
The compositions are:
f( g(x)) = (√(x + 1) + 2 - 2)^2 - 1 = (√(x + 1))^2 - 1 = (x + 1) - 1 = x
g(f(x)) = √((x - 2)^2 - 1 + 1) + 2 = √((x - 2)^2 + 2 = x
Answer:
PLATO ANSWER
Step-by-step explanation:
what is the square root of 9 and 4
Answer:
3/2
Step-by-step explanation :
Square root of 9 and 4 is 3/2 because it just is
A cashier has a total of 98 bills, made up of fives and fifties. The total value of the money is $2605. How much of each kind does he have?
He has ___ fives and ___ fifties.
Answer:
Step-by-step explanation:
x= number of fives
y= number of fifties
x+y=98
5x+50y=2605
Solving through elimination...
5x+5y=490
(5x+50y)-(5x+5y)=2605-490
45y=2115
y= 47
x+47=98
x=51
Which means he has 51 fives and 47 fifties
which is greater 3.65x10-8 or 3.65x10-7
Answer:
the second one is your answer
Step-by-step explanation:
hope this helped mark me brainlest pls and thank you
Find the circumference and area of a circle with diameter 22 ft.
Answer:
C ≅ 69.08
a= 380.1 square inches
Step-by-step explanation:
Plshelp
find a10 in sequence 3, 1, 1/3, 1/9
Answer:
1/2187 is the 10th answer in the sequence
Step-by-step explanation:
just keep dividing the number by 3
1/9, 1/27, 1/81, 1/243, 1/729, 1/2187
Sam works for 6 hours at $10.25 per hour. how much does she earn?
Answer:
$61.50
Step-by-step explanation:
1h=$10.25
6h=$10.25×6
=$61.50
Answer:
$61.5
Step-by-step explanation:
6t*10.25
= 61.5
how to write a fraction percent as a decimal such as ⅜%:
write each percent as a decimal.
[tex] \frac{3}{8} \% \: as \: a \: decimal[/tex]
Answer:
as a decimal,, you just devide 3/8 then multiply by 100 it results to
37.5
Describe how to round set to the best
HELP PLEASE QUICKLY
Y = 11x - 7, what is y when x = 4? 1 Write the equation Y = x - 7 X 7
Answer:
44-7=37
y=4-7x7....y=4-49....y=-45
PLEASE HURRY
In a particular year, a total of 49,652 students studied in two of the most popular host countries when traveling abroad. If 6786 more students studied in the most popular host country than in the second most popular host country,find how many students studied abroad in each country
How many students studied abroad in the most popular host country
x = most popular
y = second most popular
x+y=49652
x=y+6786
Substitute into the first equation
(y+6786)+y=49652
2y=49652-6786
2y=42866
y=21433
x=21433+6786=28219(answer)
Answer these please tell me
1. What the error was
2. How can U check ur answer
Answer:
The first one: the error was that the 3 shouldn’t have been moved but the 5 should have. The correct answer is k=-8
The second one: the error was that they added the 6 and 4, you would only get -10 if the 4 was - the correct answer is -2
You can check your answer by plugging in your answer to the variable and making sure both side equal each other
Step-by-step explanation:
The first one: the 5 should be - from both side so you get k=-8
The second one: the 4 should be + to both sides. And the -6 and +4 should be added together to get n=-2
Remember you always want to get the variables by themselves.
Sorry that was a lot. Hope it helps!
What is the remainder when x^2+ 3 is divided by x - 1?
Step-by-step explanation:
x² + 3 / x - 1 = x + 1
- x² - x
------------
0 x + 3
- x - 1
-------------
0 4
the remainder is 4
whats the opposite of -3 pls :)
Answer:
positive 3
Step-by-step explanation:
answer- positive 3
Answer:
Th opposite is positive 3
Step-by-step explanation:
Since it is -3 the opposite of a positive, it would be positive 3 (3)
Hope this helps!
please help with this, faststes answer gets brainliest
Answer:
Your answer is the last one. The decimal point moves four places to the right.
Step-by-step explanation:
Hope this helps!
explain how you know these figures are similar
Answer:
because of them is bigger than the other one so that means its differ but it has the same length
Step-by-step explanation:
someone please help me
Answer:
that's an angle bisector my man
Corresponding Angle is the answer
solve the formula for the specified value
v=1/3 bh
solve for b
Answer:
The choice a.
[tex]B = \frac{3v}{h} [/tex]
Step-by-step explanation:
[tex]v = \frac{1}{3} Bh \\ \\ v = \frac{Bh}{3} \\ \\ Bh = 3v \\ \\B = \frac{3v}{h} [/tex]
I hope I helped you^_^
or
Adam is going on vacation and taking his dog Pickles along. Pickles eats 3 cups of Hungry Hound dog food each day. Adam wants to know how many days he can feed Pickles from a 15-cup bag of Hungry Hound.
Which equation can Adam use to find the number of days d he can feed Pickles from the bag?
Solve this equation for d to find the number of days Adam can feed Pickles.
x = 12
2x^2(x-5)/10x
Answer:
84/5
Step-by-step explanation:
x = 12
2x^2(x-5)/10x
2*12^2(12-5)/10*12
2*12*7/10
84/5
a company had to extend a project from 276 days to 483 days. what was the precentage increase in time to complete the project?
Answer: 75% increase
Step-by-step explanation:
First, you subtract the two numbers to find out how much increased.
483-276= 207
Divide by original number
207/276= [tex]\frac{3}4}[/tex]
Multiply by 100
[tex]\frac{3}{4}*100=[/tex] 75% increase
Pls Help!! (ILL GIVE BRAINLIEST)
Triangle PQR is transformed to triangle P′Q′R′. Triangle PQR has vertices P(4, 0), Q(0, â’4), and R(â’8, â’4). Triangle P′Q′R′ has vertices P′(1, 0), Q′(0, â’1), and R′(â’2, â’1).
Plot triangles PQR and P′Q′R′ on your own coordinate grid.
Part A: What is the scale factor of the dilation that transforms triangle PQR to triangle P′Q′R′? Explain your answer.
Part B: Write the coordinates of triangle P′′Q′′R′′ obtained after P′Q′R′ is reflected about the y-axis.
Part C: Are the two triangles PQR and P′'Q′'R′' congruent? Explain your answer.
Answer:
your mom lol sooooooooooooo
Last week, Alan's Diner sold 10 milkshakes with whipped cream on top and 15 milkshakes without whipped cream. What percentage of the milkshakes had whipped cream?
Answer:
4
Step-by-step explanation:
Answer:
4 milkshakes with whipped cream
suppose river has new treats that are 10 calories each. how many of the new treats can she have and remain in her calorie range?
She can have at least 3 and at most 6 dog treats in a day
River can have - n = 10/y number of treats to remain in her calorie range, where the calorie range is [y] calories.
What is the general equation of a Straight line?The general equation of a straight line is -
[y] = [m]x + [c]
where -
[m] is slope of line which tells the unit rate of change of [y] with respect to [x].
[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.
The equation of a straight line can be also written as -
Ax + By + C = 0
By = - Ax - C
y = (- A/B)x - (C/A)
We have the following problem -
River has new treats that are 10 calories each. how many of the new treats can she have and remain in her calorie range.
Assume the calorie range to be [y] calories and assume she can have [n] number of treats. We can write the linear function as -
10n = y
OR
y = 10n
This this the equation of the straight line. She can have -
n = 10/y
number of treats to remain in her calorie range.
Therefore, River can have - n = 10/y number of treats to remain in her calorie range.
To solve more questions on straight lines, visit the link below-
brainly.com/question/29030795
#SPJ2
If you can purchase 4 books for $254, how much did each book cost?
Answer:
$63.50
Step-by-step explanation:
63.5 that's the answer am good at maths
Help me pleasee . It takes lesha 20 minutes to walk to school. It takes krista 80% as long to walk to school. how long does it take for krista to walk to school
Answer:
16 minutes
Step-by-step explanation:
80% of 20 =
10% ×8= 2×8=16
16 mins
Please help me with this question.
A garden is in the shape of a trapezium whose parallel sides are 40m and 22m and the perpendicular distance between them is 12m. Find the area of the garden
Answer:
A = 372 m²
Step-by-step explanation:
The area (A) of a trapezium is calculated as
A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂ )
where h is the perpendicular height and b₁, b₁ the parallel bases
Here h = 12, b₁ = 40 and b₂ = 22 , then
A = [tex]\frac{1}{2}[/tex] × 12 × (40 + 22) = 6 × 62 = 372 m²
write the question of a line that passes through the point (8,3) and is parallel to the line that passes through the paoints (-5,-1) and (1,-4)
Answer:
y = - 1/2x + 7
Step-by-step explanation:
Slope = (-4 - - 1)/(1 - - 5) = -3/6 = -1/2
Point: (8,3)
b = 3 - (-1/2)(8)
= 3 + 4 = 7
Could someone explain to me how to do this? I'd like to know before my test, please!
Find the value of x for which a || b
Answer:
Since a and b are parallel
Step-by-step explanation:
2x+27=3x - 27
collect the like terms
3x-2x=27+27
x=54
PLS MARK BRAINLIEST
Answer:
x = 54
Step-by-step explanation:
If the lines are treated as parallel , then
(3x - 27) and (2x + 27) are alternate exterior angles and congruent, so
3x - 27 = 2x + 27 ( subtract 2x from both sides )
x - 27 = 27 ( add 27 to both sides )
x = 54
For a and b to be parallel then x = 54
A REALITY OF RATIONAL ALGEBRAIC EXPRESSIONS
Rational equations can be used to solve a variety of problems that involve rates, times and work. Using rational expressions and equations can help you answer questions about how to combine workers or machines to complete a job on schedule.