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3 years ago

Find the inverse of f(x) = 2x + 3

Mathematics

1 answer:

liq [111]3 years ago

7 0

Answer:

f−1(x)=x−32

Explanation:

Follow the steps:

f(x)=2x+3

1- replace f(x) with y →y=2x+3

2- simply switch x and so the equation looks like x=2y+3

3- use algebra to solve for y. (isolate y)
x=2y+3

x−3=2y

x−32=y

This is the inverse function and is written as

f−1(x)=x−32

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4/5 rational or irrational

matrenka [14]

Answer: 4/5 IS RATIONAL

Step-by-step explanation: A RATIONAL NUMBER IS A NUMBER THAT CAN BE EXPRESSED AS A FRACTION. IT IS ALREADY A FRACTION SOOOO SÍ POLLO

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3 years ago

Problem 2

Sever21 [200]

Answer:

4.23 x 10 to the 4, 2 x 10 to the 3, 9.2 x 10 to the 6, 4 x 10 to the 3, 8 x 10 to the 7, and 3.2 x 10 to the 10.

Step-by-step explanation:

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3 years ago

For circle H, JN = x, NK = 2, LN = 3, and NM = 6. Solve for x.

Advocard [28]

Answer:

The value of x is 9 ⇒ C

Step-by-step explanation:

In a circle, if two chords intersected at a point inside it there are four segments created, two in each cord, the products of the lengths of the line segments on each chord are equal.

Let us use this rule to solve the question

In circle H

∵ Jk and LM are chords intersected at point N inside the circle

∴ The created segments are JN, Nk, and LN, NM

→ By using the rule above

∴ JN × NK = LN × NM

∵ JN = x and NK = 2

∵ LN = 3 and NM = 6

→ Substitute these values in the equation above

∴ x × 2 = 3 × 6

∴ 2x = 18

→ Divide both sides by 2 to find x

∴ $\frac{2x}{2}=\frac{18}{2}$

∴ x = 9

∴ The value of x is 9

8 0

3 years ago

PRESS ON THE PHOTO!! ONLY NUMBER 10 PLEASE

marta [7]

Answer:

B: T = ½R

Step-by-step explanation:

From the given graph, we see the following;

When T = 2, R = 4

When T = 3, R = 6

When T = 4, R = 8

When T = 5, R = 10

Looking at those values, we can see a pattern where R is always equal to 2T.

Or T = ½R

Thus, option B is the answer.

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3 years ago

What is the circumference of the circle shown below, given that the length of

Tresset [83]

Answer:

Step-by-step explanation:

The following ratio is true for any circle

$\frac{arc}{C}$ = $\frac{centralangle}{360}$ ← C is circumference

$\frac{4}{C}$ = $\frac{30}{360}$ ( cross- multiply )

30C = 1440 ( divide both sides by 30 )

C = 48 → A

5 0

4 years ago