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3 years ago

Identify the following equations as linear, quadratic or other. x + 3x2 = 0

Mathematics

1 answer:

aleksley [76]3 years ago

6 0

Answer: Quadratic

Solution
X=0
X=- 1/3

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Please help asap 25 pts

beks73 [17]

$y=ax^2+bx+c\\\\\text{Axis of symmetry:}\ x=\dfrac{-b}{2a}$

$\text{We have:}\\\\y=4x^2+16x-18\\\\a=4;\ b=16;\ c=-18\\\\x=\dfrac{-16}{2\cdot4}=\dfrac{-16}{8}=-2$

Answer: A.

6 0

2 years ago

The length of time for one individual to be served at a cafeteria is a random variable having an exponential distribution with a

Leya [2.2K]

Answer:

a) 0.25

b) 52.76% probability that a person waits for less than 3 minutes

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \lambda e^{-\lambda x}$

In which $\lambda = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

In this question:

$m = 4$

a. Find the value of λ.

$\lambda = \frac{1}{m} = \frac{1}{4} = 0.25$

b. What is the probability that a person waits for less than 3 minutes?

$P(X \leq 3) = 1 - e^{-0.25*3} = 0.5276$

52.76% probability that a person waits for less than 3 minutes

3 0

2 years ago

Use the Distributive Property in REVERSE ORDER to write an expression that is equivalent to 8x + 16.

mariarad [96]

Answer:

It is the first answer you got it right

Step-by-step explanation:

4 0

2 years ago

Is -123/45 an irrational number

Lilit [14]

Step-by-step explanation:

Yessss

7 0

2 years ago

Read 2 more answers

What is the answer to rounding 12.3

AnnZ [28]

To round it would be 0-4 you keep the same # 5-up so in this case it would be 12 ,

5 0

2 years ago