Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. f(x) = (x-8)/(x+7) and g(x) = (-7x-8)/x-1

Answers

Answer 1

f(x) = (x-8)/(x+7) and g(x) = (-7x-8)/(x-1)

To confirm that f(x) and g(x) are inverses.

f(g(x)) = x

g(f(x)) = x

f(g(x)) = (((-7x-8)/(x-1))-8)/(((-7x-8)/(x-1))+7)

f(g(x)) = (-15x² -15x)/(-15x² - 15)

f(g(x)) = -15x/-15

f(g(x)) = x

g(f(x)) = (-7((x-8)/(x+7))-8)/(((x-8)/(x+7))-1)

g(f(x)) = (-15x² - 105x)/(-15x²- 105)

g(f(x)) = -105x/-105

g(f(x)) = x

f(x) and g(x) are inverses.


Related Questions

Sarah's mom gave her $60 to spend at the mall,
She found a sale on pants and bought three pairs
for the same price. When Sarah got home she gave
her mom $12 in change. How much was each pair
of pants? Write an equation and solve for the
situation

Answers

Answer:

16

Step-by-step explanation:

since sarah spent 60 and there was only $12 left you must

1: subtract 12 from 60 which is 48

2. divide 48 by 3 because she bought 3 pairs of jeans which is 16

Answer:

Equation:

60 - 2p = 12

Each pair of pants:

$24

Step-by-step explanation:

Equation:

60 - 2p = 12

Solve:

-2p = 12 - 60

-2p = -48

p = -48/-2

p = 24

Ceck:

60 - 2*24 = 12

60 - 48 = 12

Find the values of x and y.

could you please help me with this?​

Answers

Answer:

y=30, x=8

Step-by-step explanation:

right angle =90

the angle of a triangle =90-40=50 degrees

the image shows two parallel line with perpendicular line that holding angle 40 and 3y

3y=90 degrees

y=90/3=30 degrees

the sum of the angles of triangle =180

3y+5x+50=180

3(30)+5x+50=180

5x=180-90-50

5x=40

x=40/5=8

the angles are 50,90,40

. If cosec x = √10, cos x =

Answers

Step-by-step explanation:

Hey, there!!

Answer: See in pictures.

I hope you are searching this.....

simply the expression of 3x+6-2x+7

Answers

Answer:

ok so add the two X's together

-2x+3x=1x

then at 6 and 7= 13

so answer is 1x+13

Step-by-step explanation:

Answer:

x +13

Step-by-step explanation:

3x+6-2x+7

Combine like terms

3x-2x   +6+7

x +13

A line parallel to
y=5x+2

Answers

Answer:

y = 5x + 3 (or, any line with the slope equal to 5 and a different y-intercept)

Step-by-step explanation:

Parallel lines will have the same slope.

So, a line such as y = 5x + 3 will be parallel because it has the same slope as the original line, which is 5.

There are almost an infinite amount of parallel lines, it just has to have the same slope and a different y-intercept.

Lines like y = 5x + 1 and y = 5x are also parallel.

Answer:

y=5x-8

Explanation:

A line that is parallel to another has the same slope.

The difference between these is where they cross the y-axis.

Hopefully this helps, have a good dayy!! :)

recursive function f(7)=5.18

Answers

f(7)=5.18
7f=5.8
————
7 7

f=0.74

8. Parallel to the line y = 2x + 5 and contains the
point (4, 5) in slope-intercept form.
Please help and show work .

Answers

Answer:

[tex]y=2x-3[/tex]

Step-by-step explanation:

So we want to find an equation in slope-intercept form that is parallel to:

[tex]y=2x+5[/tex]

And contains the point (4,5).

So to create the equation, we will need to slope and the y-intercept.

First, recall that parallel lines have the same slope. Since we want our equation to be parallel to y=2x+5, this means that the slope of the new equation must be 2.

Now, we can use the point-slope form to solve for the y-intercept. The point slope form is:

[tex]y-y_1=m(x-x_1)[/tex]

Let (4,5) be x₁ and y₁. m is 2 since it's parallel to y=2x+5. Thus:

[tex]y-5=2(x-4)\\[/tex]

Distribute:

[tex]y-5=2x-8[/tex]

Add 5 to both sides:

[tex]y=2x-3[/tex]

And that's our equation :)

2+9x=3(4x+1)-1
Find each solution

Answers

Answer:

x = 0

Step-by-step explanation:

Given

2 + 9x = 3(4x + 1) - 1 ← distribute and simplify right side

2 + 9x = 12x + 3 - 1

2 + 9x = 12x + 2 ( subtract 9x from both sides )

2 = 3x + 2 ( subtract 2 from both sides )

0 = 3x ( divide both sides by 3 )

x = 0

An AP consists of 55 terms of which 5th term is 14 and last term is 144. Find the 29th term

Answers

Answer:

29th term = 76.4

Step-by-step explanation:

Total terms = 55

aₙ = a + (n - 1) d

5th term = a₅ = 14

   a + (5 - 1)*d = 14

   a + 4d = 14  --------------------(I)

last term = a₅₅ = 144

               a + (55 - 1)d = 144

      a + 54d = 144----------------(II)

Multiply equation (II) by (-1)

(I)             a +  4d = 14

(II)*(-1)     -a - 54d = -144  {Now add and thus a will be eliminated}

                   -50d = -130

 d = -130/-50

d = 2.6

Plug in d = 2.6 in equation (I)

a + 4* 2.6 = 14

  a  + 10.4 = 14

              a = 14 - 10.4

              a = 3.6

29th term = a₂₉ =  3.6 + (29 - 1)* 2.6

                          = 3.6 + 28* 2.6

                          = 3.6 + 72.8

                     a₂₉ =  76.4

Answer:

76.4

Step-by-step explanation:

Let the first term and common difference of the AP be a and D respectively.

[tex]t_5 = 14 \implies \: a + 4d = 14....(1) \\ t_{55} = 144 \implies \: a + 54d = 144....(2) \\ subtract \: eqution \: (1) \: from \: equatin \: (2) \\ \\ a + 54d - (a + 4d) = 144 - 14 \\ a + 54d - a - 4d = 130 \\ 50d = 130 \\ d = \frac{130}{50} \\ \huge \red{ \boxed{ d = 2.6}} \\ substituting \: d = 2.6 \: in \: equation \: (1) \\ \\ a + 4 \times 2.6 = 14 \\ a + 10.4 = 14 \\ a = 14 - 10.4 \\ \huge \purple{ \boxed{ a = 3.6}} \\ \\ t_{29} = a + 28d \\ t_{29} = 3.6 + 28 \times 2.6 \\ t_{29} = 3.6 + 72.8 \\\huge \orange{ \boxed{ t_{29} = 76.4}} \\ [/tex]

-5(6x+3y-1)

What is this simplified

Answers

Answer:

Step-by-step explanation:-30x-15y+6

Answer:

− 30 x − 15 y + 5

Just distribute and combine like terms

If you want the complete steps just ask!

Hope this Helps!!

In buffalo, New York the temperature was -12F in the morning. What will the temperature be if it drops 9F

Answers

Answer:

The correct answer is -21 degrees.

Step-by-step explanation:

We know that the original temperature was -12 degrees.  If the temperature drops another 9 degrees, this means that it is getting colder or the temperature is getting lower; this lets us know that we should subtract 9 from the original temperature.  This is modeled below:

-12 - 9

Now, we simply have to perform the subtraction to get:

-21 degrees

Hope this helps!

what is the prefix for deci

Answers

Answer: Deci is a decimal unit prefix in the metric system denoting a factor of one tenth. Basically, it means “tenth.”

The prefix for deci is 10

8a + 12b = 92 6a – 4b = 4 -- a =? b = ?

Answers

Answer:

a = 4 b = 5

Step-by-step explanation:

8a + 12b = 92......eqn 1

6a - 4b = 4......eqn 2

multiply eqn 2 by 3

18a - 12b = 12.....eqn 2

add eqn 1 and 2 to eliminate b

26a = 104

a = 4

put a = 4 into eqn 2

18(4) - 12b = 12

72 - 12b = 12

72 - 12 = 12b

60 = 12b

5 = b

A rectangular parking lot has a length that is 8 yards greater than the width. The area of the parking lot is 560 square yards. Find the length and the width.

Answers

Answer: length=28, width=20

Step-by-step explanation:

Let x=width, then length=x+8

x(x+8)=560

x²+8x=560

x²+8x-560=0

(x-20)(x+28)=0

x=20 or x=-28 (rej) since a width can't be negative

20+8=28

Hope this helps!! :)

Please let me know if you have any question

Solve the following equation for x.
3x-9=-33

A.-16
B.-8
C.-9
D-14

Answers

Answer:

-8

Step-by-step explanation:

3x-9 = -33

3x= -33+9

3x= -24

x= -24/3

x= -8

hope this helps

The following equation for x. 3x-9=-33 has the valueof x as -8. Thus, option B is correct.

 

What is the equation?

A formula that expresses the connection between two words on each side of an indication. A calculation with an integer multiple is referred to as an equation. Algebra is widely used in equations. In performing calculations but unsure of the precise amount, algebra is utilized.

The equation that is presented is

3x-9 = -33

3x= -33+9

Simplifying the equation

3x= -24

x= -24/3

The value of x is derived as

x= -8

Therefore, option B is the correct option.

Learn more about equations, here:

https://brainly.com/question/10413253

#SPJ2

Picture below for Question

Answers

Answer:

i think its c.

Step-by-step explanation:

christa spends 30% of her weekly income rent. if her rent is $360 each week, find her weekly income.

Answers

Answer:

1200

Step-by-step

$360= 30%

$12= 1%

12*100= 1200

Check

1200/0.3=360

3(x+2)=-5(x-3) what is the answer​

Answers

Answer:

x = 9/8

Step-by-step explanation:

Step 1: Write out equation

3(x + 2) = -5(x - 3)

Step 2: Distribute

3x + 6 = -5x + 15

Step 3: Add 5x on both sides

8x + 6 = 15

Step 4: Subtract 6 on both sides

8x = 9

Step 5: Divide both sides by 8

x = 9/8

Answer: 9/8

Step-by-step explanation:

Use distributive property to solve

What fraction is bigger 27/75 or 18/55

Answers

Answer:

[tex]\frac{18}{55}[/tex]

Step-by-step explanation:

Which fraction is bigger? [tex]\frac{27}{75}[/tex] or [tex]\frac{18}{55}[/tex]

If you look closely the fraction [tex]\frac{27}{75}[/tex] , it looks big but it actually isn't.

The fraction that is bigger is [tex]\frac{18}{55}[/tex] . This is because 75 is a big number and its only 27 out of the 75. In [tex]\frac{18}{55}[/tex] , it's not as big as 75. So compare 18 and 27 and 75 and 55. 75 is 20 more than 55. The number 27 is only 9 bigger than 18.

That's why your answer is

[tex]\frac{18}{55}[/tex]

Hope this helps!

if rs=2x-1 and st=4x+7 then x=
rt=60

Answers

Answer:

9

Step-by-step explanation:

GivenRS = 2x - 1ST = 4x + 7RT = 60x= ?Solution

Since S is the point on the line segment RT,

RT = RS + ST, and

60 = 2x - 1 + 4x + 760 = 6x + 610 = x + 1x = 10 - 1x = 9

Generate a plan and describe the steps needed to solve the equation. 34 = –(m + 3)

Answers

Answer:

m=−37

Step-by-step explanation:

34 = -3 + -1m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add 'm' to each side of the equation.

34 + m = -3 + -1m + m

Combine like terms: -1m + m = 0

34 + m = -3 + 0

34 + m = -3

Add '-34' to each side of the equation.

34 + -34 + m = -3 + -34

Combine like terms: 34 + -34 = 0

0 + m = -3 + -34

m = -3 + -34

Combine like terms: -3 + -34 = -37

m = -37

Answer:

Sample Response:

The negative sign outside the parentheses represents –1. Distribute the –1 to everything inside the parenthesis. Use the addition property of equality first to add 3 to both sides. Then use the division property of equality to divide both sides by -1.

WILL GIVE BRALIEST!!!! PLEASE HELP FOR THESE ARE MY LAST QUESTION!!! AT LEAST TAKE A LOOK!!! EASY I AM JUST DUMB
Which statements describe characteristics of an AND inequality? (Select all that apply.)
A) Values in the solution set satisfy both inequalities.
B) It is the intersection of two solution sets.
C) Shading generally occurs to the right or the left of the named values.
D) It is the union of two solution sets.

Answers

Answer:

A) Values in the solution set satisfy both inequalities.

B) It is the intersection of two solution sets.

Step-by-step explanation:

We denote intersection as AND.

[tex]A \cap B \implies \text{A and B}[/tex]

Take those sets. The intersection is what A and B share.

a bee flies at 9 feet per second directly to a flower bed from its hive. the bee stays at the flower bed for 15 minutes then flies directly back to the hive at 6 feet per second. it is away from the hive for a total of 20 minutes

Answers

Answer:

Assuming the question is asking how much time it takes each way, the answer would be 2 minutes from the hive to the flowerbed and 3 minutes back.

Assuming the question is the amount of distance between the hive and the flower bed, the answer is 1080 feet.

Step-by-step explanation:

So the total amount of time it was away from the hive was 20 minutes. Out of those 20 minutes, 15 minutes were spent in the flowerbed. So that means travel time was 5 minutes. Now, going is 9 and coming back is 6, so 9+6=15, 5/15=1/3, 1/3*9=3 and 1/3*6=2

Knowing that information, lets solve what the question could be because I have no idea. The amount of distance from the hive to the flower bed is 1080 feet. I got this by doing 9 (the amount of feet per second) times 120 (the amount of seconds in 3 minutes.) You could do this with 6 but I found it easier to multiply 9*120 compared to 6*180.

If it's the commute time, we already solved that.

If I didn't answer the real question, please just comment on this.

7. Jim is training for a race. Jim ran 9.8 miles away from his home. Then, Jim ran 7.2 miles towards his home. Finally, Jim ran 4.6 miles away from his home. How far is Jim from his home? *

Answers

Answer:

stop cheating

Step-by-step explanation:

no

If the area of a garden is 11 square feet, what could be the dimensions of the garden?

Answers

Answer:

See below

Step-by-step explanation:

Assuming that the garden is a rectangle, its dimensions could be 1 by 11 feet or 11 by 1 feet. Remember that the area of a rectangle is calculated by multiplying its two dimensions together so we just need to find the factor pairs of 11.

IF DE = 3x+8, EF = 4x+6, and DF = 28, find the value of x. [In your solution,
put x = YOUR ANSWER

Answers

Answer:

x = 2

Step-by-step explanation:

Since, points D, E and F are collinear.

Therefore,

DF = DE + EF

28 = 3x + 8 + 4x + 6

28 = 7x + 14

28- 14 = 7x

14 = 7x

[tex] \frac{14}{7} = x \\ 2 = x \\ \huge \red { \boxed{x = 2}}[/tex]

Hi please help me solve this the topic is on circle geometry, whoever answers will be marked as the brainiest.

Answers

Answer: Choice C. 118 degrees

=====================================================

Explanation:

Line PR is tangent to the circle at point T. Angle PTO is 90 degrees because of this.

Angle TON is 124 degrees. Triangle TON is isosceles (since we have two sides of the triangle TO and ON equal to the radius). Therefore angles OTN and ONT are equal base angles. Call these x for now

-------

Since 3 angles of any triangle always add to 180, we can say...

x+x+124 = 180

2x+124 = 180

2x = 180-124

2x = 56

x = 28

Therefore,

angle PTN = (angle PTO) + (angle OTN)

angle PTN = 90 + 28

angle PTN = 118

Answer:

d is the answer

Write a real world problem for 290=48+22x

Answers

You have 48 napkins. You're planning on buying some packages of napkins at the store later. Each package contains 22 napkins. You've got to buy enough since you've need 290 napkins. How many packages of napkins will you buy? Let the amount of packaged napkins you'll buy be x.

HELPP!!!1 Two angles are complementary. One angle is 47 degrees. What is the measure of the other angle?

Answers

Answer:

43°

Step-by-step explanation:

Complementary angles add up to 90° in measurement.

One angle is 47 degrees.

[tex]90-47=\boxed{43}[/tex]

The measurement of the other angle would be 43°.

Hope this helps.

The measure of other angle is 43 degree.

What is complementary angles?

Complementary angles are those whose combined angle is 90 degrees or less. To put it another way, two angles are said to be complimentary if they combine to make a right angle. In this case, we say that the two angles work well together.

Given that.

Two angles are complementary.

Now consider one angle = x degree

And other angle  = y degree

Then according to question,

Measure of angle x = 47 degree

We know that,

The sum of complementary angles are equal to 90 degree.

Therefore,

x + y = 90

x + 47 = 90

       x = 90 - 47

       x  = 43

Hence, the other angle is = 43 degree.

To learn more about complementary angle visit:

https://brainly.com/question/98924

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Find the square root by prime factorisation method 6860.

Answers

Answer:

14√35

Step-by-step explanation:

√6860 =

= √686×10

= √686×2×5

= √343×2×2×5

= √49×7×2²×5

= √7²×7×2²×5

= 7×2√7×5

= 14√35

[tex]\sqrt{6860}=\sqrt{10*686}=\sqrt{10*343*2}=\sqrt{5*2*343*2}=\sqrt{5*2*7*49*2}=\sqrt{5*2*7*7*7*2}=\sqrt{2*2*7*7*5*7} =2*7\sqrt{5*7} =14\sqrt{35}[/tex]

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