All categories

3 years ago

PLEASE HELP I DONT HAVE MUCH TIME

Mathematics

2 answers:

Yuliya22 [10]3 years ago

8 0

Answer: 1/64

Step-by-step explanation: it wants you to have 4^-3

vaieri [72.5K]3 years ago

4 0

Answer: Choice A. 1/64

Work Shown:

f(x) = 4^x

f(-3) = 4^(-3)

f(-3) = 1/(4^3) ... see note below

f(-3) = 1/64

Note: I'm using the rule that a^(-b) = 1/(a^b)

You might be interested in

Please help, I can't get it

algol [13]

X+5 /3
hope this helps!

5 0

3 years ago

FIND the following. Math

podryga [215]

Answer:

Wow you needed help and nobody help, thats mean.

3 0

2 years ago

0.8b= -1.12 what is b

Sunny_sXe [5.5K]

B=-1.4 because -1.4•.8=-1.12

6 0

3 years ago

PLEASE ANSWER

Olenka [21]

Answer:

x(1 - .4)

Step-by-step explanation:

x = regular price.

1 - .4 = .6 = 60%

The sale price is equal to the full price (aka x) minus the discounted price (40% of x = 40/100 times x = .4x)

Therefore sale price = x - .4x or x(1 - .4)

4 0

3 years ago

(2A) Find f(2x + 4) for f(x) = 1 - x2

Aleksandr-060686 [28]

Answer:

f(2x + 4) = -4x² - 16x - 15

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Distributive Property

Algebra I

Terms/Coefficients
Expanding (FOIL)

Step-by-step explanation:

Step 1: Define

Identify

f(x) = 1 - x²

Step 2: Evaluate

Substitute in x [Function f(x)]: f(2x + 4) = 1 - (2x + 4)²
Expand [FOIL]: f(2x + 4) = 1 - (4x² + 16x + 16)
(Parenthesis) Distribute negative: f(2x + 4) = 1 - 4x² - 16x - 16
Combine like terms: f(2x + 4) = -4x² -16x - 15

8 0

2 years ago