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3 years ago

Which is the third greatest rational number

Mathematics

1 answer:

patriot [66]3 years ago

7 0

The order is -1.4, -3/5, 1/4, 0.9, and 9/2. So
D is the correct answer

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If f(x)=3x+2,find f(f^-1(14)).

lisov135 [29]

Answer: 14

Step-by-step explanation:

f(x) = 3x + 2

To find f⁻¹, swap the x's and y's and solve for y --> Note: f(x) is y

x = 3y + 2

x - 2 = 3y

$\dfrac{x-2}{3}=y$

$\implies f^{-1}(x)=\dfrac{x-2}{3}$

$\implies f^{-1}(14)=\dfrac{14-2}{3}$

$\implies f^{-1}(14)=\dfrac{12}{3}$

$\implies f^{-1}(14)=4$

f(f⁻¹(14)) = f(4)

f(4) = 3(4) + 2

= 12 + 2

= 14

NOTE: the simplified version is .... f and f⁻¹ cancel out, leaving you with 14

4 0

3 years ago

Simplify the expression below.

Novay_Z [31]

Answer:

$\displaystyle 6$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{7^2 - 13}{24 - 18}$

Step 2: Evaluate

[Fraction] Exponents: $\displaystyle \frac{49 - 13}{24 - 18}$
[Fraction] Subtract: $\displaystyle \frac{36}{6}$
[Fraction] Divide: $\displaystyle 6$

5 0

3 years ago

What are the coordinates of point A if it is rotated 90 degrees counterclockwise about the origin?

Leokris [45]

Answer:-5

Step-by-step explanation:

4 0

3 years ago

Deon's gas tank is 3/10

Fittoniya [83]

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3 years ago

A- 13 B- 26 C- 52 D- there is not enough information

NISA [10]

The answer is A, 13. Since we know line DB is a median (the middle), it tells us that line BC must equal line AB. Simply just do 26/2.

6 0

3 years ago