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3 years ago

Find the inverse of the function f(x)=−4x2−8, x≤0.

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

6 0

$\sqrt{ \frac{x+8}{-4} }$

You get this by switching the f(x) and the x and then solving for the new f(x)

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3-(4-2) 5 3.4-2.5 11-4-2 2015 11 (42) (7-3)-(4-2)7-3-4-2

KATRIN_1 [288]

Answer: look below :)

Step-by-step explanation:

5 < 11 < 42 < 2015

5 is less than 11 is less than 42 is less than 2015

< 11/

< 42/

< 2015/

8 0

1 year ago

PLEASE HELP GEOMETRY QUESTION

tino4ka555 [31]

Answer:

Step-by-step explanation:

8 0

2 years ago

Find the missing side length

Slav-nsk [51]

Answer:

x ≈ 4.8

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] cos∅ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Identify Variables

Angle measure = 58°

Adjacent side of angle = x

Hypotenuse = 9

Step 2: Solve for x

Substitute [cosine]: cos58° = x/9
Isolate x: 9cos58° = x
Evaluate: 4.76927 = x
Rewrite: x = 4.76927
Round: x ≈ 4.8

5 0

3 years ago

Read 2 more answers

Suppose Bank One offers a certificate of deposit that pays $5,000 in four years for exchange for $4,000 today. What interest rat

vlada-n [284]

Answer:

Bank One is offering a simple interest rate of 6.25% per annum.

Step-by-step explanation:

Given that Bank One offers a certificate of deposit that pays $ 5,000 in four years for exchange for $ 4,000 today, to determine what interest rate is Bank One offering the following calculation must be performed:

(5000 - 4000) / 4 = X

1000/4 = X

250 = X

4000 = 100

250 = X

250 x 100/4000 = X

25000/4000 = X

6.25 = X

Therefore, Bank One is offering a simple interest rate of 6.25% per annum.

7 0

2 years ago

A necklace and earrings cost $144. Six necklaces and five pairs of earrings cost $825

hram777 [196]

Step-by-step explanation:

let necklace : x

let earrings : y

x+y=144 -1st eqn

6x+5y=825 -2nd eqn

y=144-X -3rd eqn

substitute eqn into 2nd eqn

6x+5(144-x)= 825

6x +720-5X =825 (expanded)

X = 825-720

X =105

substitute "X=105" into 1st eqn

(105)+y=144

y= 144-105

y=39

1 necklace = 105$

1 pair of earrings = 39$

(to check back: substitute the value into the original eqn)

6 0

2 years ago