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Deffense [45]
2 years ago
11

What is the inverse function of d(x ) = -2x - 6? DO NOT answer if you're not sure

Mathematics
1 answer:
rjkz [21]2 years ago
7 0

First make the equation equal y

Y=-2x-6

Then rearrange to make x the subject

2x=-y-6

X=(-y-6)/2

Then change the y's to x's

Inverse=(-x-6)/2

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3. What is the slope of a line that passes<br> through (0,-5) and (8,27)?
Elden [556K]

Answer:

4.

Step-by-step explanation:

Slope = difference in y coordinates / difference in the corresponding x coordinates

(27 - (-5)) / (8 - 0)

= 32 / 8

= 4.

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2 years ago
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A transformation describes a change in location, orientation, or size of a figure. Translations, reflections, and rotations belo
marshall27 [118]

Answer: These are called rigid transformations because the structure and shape of the shape remains the same.

Step-by-step explanation: The word rigid and rigidity is often used to describe something that is tough or the strength of something. The transformations might be called a rigid transformation because the rigidity of the shape remains the same because the size is the exact same, it is the exact same shape it is just moved.

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Vikentia [17]

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D

Step-by-step explanation:

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Factor completely: X^3-5x^2-9x+45
lesantik [10]

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I think that is the answer and hope you will benefit from it

4 0
3 years ago
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The weekly amount spent by a small company for in-state travel has approximately a normal distribution with mean $1450 and stand
Llana [10]

Answer:

0.0903

Step-by-step explanation:

Given that :

The mean = 1450

The standard deviation = 220

sample mean = 1560

P(X > 1560) = P( Z > \dfrac{x - \mu}{\sigma})

P(X > 1560) = P(Z > \dfrac{1560 - 1450}{220})

P(X > 1560) = P(Z > \dfrac{110}{220})

P(X> 1560) = P(Z > 0.5)

P(X> 1560) = 1 - P(Z < 0.5)

From the z tables;

P(X> 1560) = 1 - 0.6915

P(X> 1560) = 0.3085

Let consider the given number of weeks = 52

Mean \mu_x = np = 52 × 0.3085 = 16.042

The standard deviation =  \sqrt {n \time p (1-p)}

The standard deviation = \sqrt {52 \times 0.3085 (1-0.3085)}

The standard deviation = 3.3306

Let Y be a random variable that proceeds in a binomial distribution, which denotes the number of weeks in a year that exceeds $1560.

Then;

Pr ( Y > 20) = P( z > 20)

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From z tables

P(Y > 20) \simeq 0.0903

7 0
3 years ago
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