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maria [59]
3 years ago
12

What is the inverse of f(x) = x/5 -2

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0

Answer:

y= 5x+10

Step-by-step explanation:

Inverse basically means y is now x and x is now y.

y= x/5 -2 becomes x= y/5 -2

Remember to always leave your equation f(x) = ...

i.e. y =...

x= y/5 -2

add 2 both sides

x+2 = y/5

multiply 5 both sides

5(x+2) = y

Hence,

y= 5x + 10

Hope this helps!

Please mark brainliest if you think I helped! Would really appreciate!

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What is the solution of the system?
spin [16.1K]
The Answer is b: x = 18, y = -20

Proof:

Solve the following system:
{4 x + 3 y = 12 | (equation 1)
{7 x + 5 y = 26 | (equation 2)

Swap equation 1 with equation 2:
{7 x + 5 y = 26 | (equation 1)
{4 x + 3 y = 12 | (equation 2)

Subtract 4/7 × (equation 1) from equation 2:
{7 x + 5 y = 26 | (equation 1)
{0 x+y/7 = (-20)/7 | (equation 2)

Multiply equation 2 by 7:
{7 x + 5 y = 26 | (equation 1)
{0 x+y = -20 | (equation 2)

Subtract 5 × (equation 2) from equation 1:
{7 x+0 y = 126 | (equation 1)
{0 x+y = -20 | (equation 2)

Divide equation 1 by 7:
{x+0 y = 18 | (equation 1)
{0 x+y = -20 | (equation 2)

Collect results:

Answer: {x = 18, y = -20
6 0
3 years ago
3. Find the values of the variables and the lengths of the sides of this kite.
Kazeer [188]

Answer:

So, the correct option is A. x = 9, y = 14 , Sides are 11 and 20

Step-by-step explanation:

P.S - the exact question is -

As given in the question ,

Side AB = Side AD

⇒y - 3 = x + 2

⇒y - x = 2 + 3 = 5

⇒y - x = 5                        .........(1)

Also, given

Side BC = Side CD

⇒2x + 2 = x + 11

⇒2x - x = 11 - 2

⇒x = 9

∴ equation (1) becomes

y - 9 = 5

⇒y = 5 + 9 = 14

⇒y = 14

∴ we get

x = 9, y = 14

Now,

as given ,

Side AB = y - 3

⇒ AB = 14 - 3 = 11

Side BC = 2x + 2

⇒ BC = 2(9) + 2 = 18 + 2 = 20

Side CD = x + 11

⇒ CD = 9 + 11 = 20

Side DA = x + 2

⇒DA = 9 + 2 = 11

∴ we get

The sides are 11 and 20

So,

The correct option is A. x = 9, y = 14 , Sides are 11 and 20

8 0
3 years ago
Please help<br><br> Look at picture <br><br> Supplementary angles
Brilliant_brown [7]

Answer:

1)=> x=22

2)=> x=16

Step-by-step explanation:

....,....................

7 0
3 years ago
Write the point-slope form of the equation of the line that passes through the points (6, -9) and (7, 1). Include your work in y
lys-0071 [83]
First find the slope, 
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Next, use the point slope form to find the equation:
L : y-y1=m(x-x1) => y-1=10(x-7) 
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5 0
3 years ago
What is the area of the composite figure whose vertices have the following coordinates?
Alex777 [14]

Answer:

24

Step-by-step explanation:

From the picture you can see that area is sume of area P1 and area P2.

a=6 because its egdes are on point -2 and 4, so it is 6. (See x-ose)

h=3 Edges on -2 and 1 (see y-ose)

k=2 edges on 3 and 1 on y-ose

P1=a*h=6*3=18

P2=a*k/2=6*2/2=6

P=18+6=24

7 0
4 years ago
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