1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
laiz [17]
3 years ago
14

Inverse of f(x)=-5x+15

Mathematics
1 answer:
Otrada [13]3 years ago
5 0

f(x) = -5x - 15


Let y = f(x)


y = -5x - 15


Switch the x and y places, and solve for y:


x = -5y - 15


-5y = x + 15


y = (x + 15)/-5


y = -(x/5) - 3


So the inverse of : f(x) = -5x - 15 is


-x/5 - 3

You might be interested in
Which of the following systems of inequalities has point D as a solution?<br> f(x) = 3x+4
Alex73 [517]

I think is this one
8 0
3 years ago
louise bought 80 metres of fencing to make an enclosure for her pet dog .tommy if louise expects a rectangular enclosure what is
OleMash [197]

Answer:

400 m^2.

Step-by-step explanation:

The largest  area is obtained where the enclosure is a square.

I think that's the right answer because a square is a special form of a rectangle.

So the square would be 20 * 20  = 400 m^2.

Proof:

Let the  sides of the rectangle be x and y m long

The area A = xy.

Also the perimeter  2x + 2y = 80

x + y = 40

y = 40 - x.

So substituting for y in A = xy:-

A = x(40 - x)

A = 40x - x^2

For maximum value of A  we find the derivative and equate it to 0:

derivative A' =  40 - 2x = 0

2x = 40

x = 20.

So y = 40 - x

= 40 - 20

=20  

x and y are the same value so x = y.

Therefore for maximum area the rectangle is a square.

3 0
2 years ago
Because triangle XYZ is a right triangle, the side lengths must satisfy the Pythagorean theorem, a2 + b2 = c2, which in this iso
abruzzese [7]

Complete Question

Because triangle XYZ is a right triangle, the side lengths must satisfy the Pythagorean theorem, a² + b² = c², which in this isosceles triangle becomes a² + a² = c². By combining like terms, 2a² = c². Which final step will prove that the length of the hypotenuse, c, is StartRoot 2 EndRoot times the length of each leg?

a) substitute values for a and c into the original pythagorean theorem equation.

b) divide both sides of the equation by two, then determine the principal square root of both sides of the equation.

c) determine the principal square root of both sides of the equation.

d) divide both sides of the equation by 2.

Answer:

c) determine the principal square root of both sides of the equation.

Step-by-step explanation:

Pythagoras Theorem for a right angled triangles states that:

a²+ b²= c²

But for an Isosceles Triangle, where two sides of the triangle are equal, we have:

a²+ a² = c²

By combining like terms

2a² = c²

We square root both sides of the equation.

√2a² = √c

√2a² = c

The final step will prove that the length of the hypotenuse, c, is StartRoot 2 EndRoot times the length of each leg = √2a² = c is Option c.

4 0
3 years ago
Read 2 more answers
Solve the equation for x.<br> x<br> 9<br> =
iren [92.7K]
What kind of operation is this ? it just says x and a nine.
3 0
2 years ago
Help me plss and if you can find all the answers for test ill be sooooo happy
iren2701 [21]

Answer:

2. 1,3,5

Step-by-step explanation:

4 = 18.00

4\sqrt{18.00 = 4.50

4.50 x 6 = 25.20

3\sqrt{18.00}= 6.00

7 0
2 years ago
Other questions:
  • How many points need to be removed from this graph so that it will be a function?
    8·2 answers
  • What is 25 % off $249
    5·2 answers
  • For a class trip, a total of 116 ticket need to be purchased. The cost of an adult ticket is $17000. The cost of a child ticket
    10·2 answers
  • Solve for x.<br>-4x - 76 &lt; -52<br>​
    13·1 answer
  • The coordinates of f(n)=−3 is 5
    8·1 answer
  • What is tbe best approximation for the circumference of a corcle with a diameter of 400 inches use 3.14 to approximate pi
    8·2 answers
  • Triangle ABC is a right triangle. Which equations can be used to find the value of x? Check all that apply.
    6·2 answers
  • Solve the equation 3^(2x) -4*3^(x+1) + 27 = 0. use rules of exponents to change 3^(x+1)​
    15·1 answer
  • A satellite camera takes a rectangular-shaped picture. The smallest region that can be photographed is a 4-km by 4-km rectangle.
    14·1 answer
  • All-purpose carpeting costs $27.50 per square meter. What is the cost of carpeting a room from
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!