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2 years ago

What is the inverse of f(x)=(4x-3)/7

Mathematics

1 answer:

iragen [17]2 years ago

5 0

Answer:

f(x)^-1 = $\frac{1}{28} x + \frac{3}{4}$

Step-by-step explanation:

f(x) = (4x - 3) / 7

y = (4x - 3) / 7

x = (4y - 3) / 7

x / 7 = 4y - 3

x/7 + 3 = 4y

y = $\frac{1}{28} x + \frac{3}{4}$

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Use the distance formula to find the perimeter of the triangle below. Round you answer to the nearest hundredth.

Murrr4er [49]

jAlright, let's take this problem step-by-step:

What is the perimeter:

⇒ all the side-lengths added up

⇒ need to find side-length using distance formula

$Distance_._. Formula=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

- (x₁,y₁): first point

- (x₂,y₂): second point

Let's solve:

Find length of AC

⇒ first point: (5,7)

⇒ second point: (3,3)

$Distance =\sqrt{(3-5)^2+(3-7)^2} =\sqrt{4+16} =\sqrt{20} =4.472$

Find length of AB

⇒ first point: (5,7)

⇒ second point:(8,6)

$Distance=\sqrt{(8-5)^2+(6-7)^2} =\sqrt{9+1} =\sqrt{10}=3.162$

Find length of BC

⇒ first point: (8,6)

⇒ second point: (3,3)

$Distance = \sqrt{(3-8)^2+(3-6)^2} =\sqrt{25+9} =\sqrt{34}=5.831$

Now let's solve for the perimeter:

$Perimeter = 4.472+ 3.126+ 5.831=13.429$

Answer: 13.43 (rounded to the nearest hundredth)

Hope that helps!

#LearnwithBrainly

5 0

2 years ago

Attachment Mathswatch!!

icang [17]

Answer:

y=4x -3

Step-by-step explanation:

It is the same steps from last time! 4 is the slope and -3 is the y-intercept.

Hope this helped :3

6 0

3 years ago

What is the area and perimeter of a triangle with the height of 20 and bases: 12 and 16?

VladimirAG [237]

There's not enough given information to fidn the perimeters of the given triangles, so I'll just help you with the areas:
Area of 20x12 triangle = (20*12)/2 = 120
Area of 20x16 triangle = (20*16)/2 = 160

4 0

4 years ago

Write an algebraic expression for the product of 5 and g

vodomira [7]

A product is an answer to a multiplication problem.

5g = g +98

the multiplication is implied between the 5 and the g

5 0

4 years ago

Pleaseee help me!! ASAP

vichka [17]

Answer:

Yes 4:3

Step-by-step explanation:

To solve this, take the the inside number and subtract in from the outside number. Look at the question very carefully for this part...

Since it says the ratio of the outside number to the inside number, take that number and see how many times it can fit into the outside number. In this case, it is 4, and than for the inside number, it is 3.

Now do the same for the other measurement and see if it has the same ratio, and if it does, that is the answer.

6 0

3 years ago