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3 years ago

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The length of time for one individual to be erved at a cafeteria is a random variable having an ex- ponential distribution with

a mean of 4 minutes. What is the probability that a person will be served in less than/3 minutes on at least 4 of the next 6 days?

1 answer:

777dan777 [17]3 years ago

6 0

Answer:

less than 3

Step-by-step explanation:

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Do not use spaces in your answer. Solve for x. -5x + 12x - 8x = -24 x = ___ a0

const2013 [10]

Answer:

$\Huge \boxed{x=24}$

Step-by-step explanation:

$-5x + 12x - 8x = -24$

Combine all like terms.

$(-5+ 12- 8)x = -24$

$-x=-24$

Multiply both sides by -1.

$x=24$

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3 years ago

Read 2 more answers

What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

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3 years ago

Mario collected data about some of the players on a women’s basketball team. The data is shown in the form of table, mapping, an

Mumz [18]

Answer:

1. No, because each x value can only have one y value (one-to-one relationship).

2. No, because each x value can only have one y value (one-to-one relationship).

3. Yes, because one member of the domain is assigned to one member of the range.

Step-by-step explanation:

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2 years ago

Urgent please help..

storchak [24]

The answer is 51.3

Explanation:
You’re finding angle Y, so write the SOH CAH TOA. the two sides your are given are the adjacent side to Y and the opposite side so you use tangent. You then get the equation tanY=10/8 Since you’re finding an angle you use inverse tangent so you get y=tan^-1(10/8) and then put that into the calculator!

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2 years ago

Select all the expressions that are equal to the product of 8 and 10

Naddika [18.5K]

Is there a pic provided

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