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Sav [38]
4 years ago
12

Please help thanks guys

Mathematics
1 answer:
erma4kov [3.2K]4 years ago
7 0
D desert shores is above sea level
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Model 3xfx Write the inverse of the rational function used to represent the situation in model 3, .
kompoz [17]
Make f(x) = y
y = (15x + 50)/(x + 5)
Swap the x and y and make y the subject again
x = (15y + 50)/(y + 5)
x(y + 5) = 15y + 50
xy + 5x = 15y + 50
xy - 15y = 50 - 5x
y(x - 15) = 50 - 5x
y = (50 - 5x)/(x - 15)
So inverse function f^-1(x) = (50 - 5x)/(x - 15)
5 0
2 years ago
Plot the x-intercept and y-intercepts to graph the equationy = 1/3x - 1
borishaifa [10]

The equation is written in the slope-intercept form:

y=mx+b

Where:

m = Slope

b = y-intercept

From the equation we can conclude that the y-intercept is:

(0,-1)

We can find the x-intercept as follows:

\begin{gathered} y=0 \\ \frac{1}{3}x-1=0 \\ \frac{1}{3}x=1 \\ x=3 \end{gathered}

The x-intercept is:

(3,0)

The graph is:

undefined

6 0
1 year ago
The point (1,1) is the image under the translation (x,y)-> (x+3,y-3). What is the preimage of this point?
wel

Answer:

(-2,4)

Step-by-step explanation:

\text{pre-image}->\text{image}

(x,y)->(x+3,y-3)

(x,y)->(1,1)

This implies (x+3,y-3)=(1,1).

This means x+3=1 and y-3=1.

Subtract 3 on both sides for first equation: x=1-3=-2.

Add 3 on both sides for the second equation: y=1+3=4.

So the pre-image (x,y) is (-2,4) if the image is (1,1).

Let's check:

(x,y)->(x+3,y-3)

(-2,4)->(-2+3,4-3)

(-2,4)->(1,1)

So the solution has been checked and verified.

6 0
3 years ago
Gavin agrees to buy a 6-month package deal of monthly gym passes and in turn receives a 15% discount. Write an algebraic express
Lilit [14]
6*x=y
15%*y=Z
that is the equations
5 0
3 years ago
What is the answer to -5+2=
Pavlova-9 [17]

Answer:

-3

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
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