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Lady bird [3.3K]
3 years ago
12

Gloria enjoys playing Skee ball — an arcade game where players toss a ball so it rolls up a ramp and falls into one of several s

lots. Each slot is worth a different number of points based on how difficult it is to land the ball in that slot. Gloria only aims at the most difficult slot, which is worth 100100100 points, but she only has a 10\%10%10, percent chance of landing the ball in that slot. If she misses, her ball will certainly land in the 101010 point slot.
The table below displays the probability distribution of XXX, the number of points Gloria scores on a random shot.
X=points, 100 10
P(X), 10%, 90%,
Given μx=19μ calculate σ X
​
Mathematics
1 answer:
Mila [183]3 years ago
7 0

Answer:27

Step-by-step explanation:

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Find the absolute maximum and minimum values of the function below. f(x) = x3 − 9x2 + 3, − 3 2 ≤ x ≤ 12 Solution Since f is cont
Neko [114]

Answer:

There are an absolute minimum (x = 6) and an absolute maximum (x = 12).

Step-by-step explanation:

The correct statement is described below:

Find the absolute maximum and minimum values of the function below:

f(x) = x^{3}-9\cdot x^{2}+ 3, 2 \leq x \leq 12

Given that function is a polynomial, then we have the guarantee that function is continuous and differentiable and we can use First and Second Derivative Tests.

First, we obtain the first derivative of the function and equalize it to zero:

f'(x) = 3\cdot x^{2}-18\cdot x

3\cdot x^{2}-18\cdot x = 0

3\cdot x \cdot (x-6) = 0 (Eq. 1)

As we can see, only a solution is a valid critical value. That is: x = 6

Second, we determine the second derivative formula and evaluate it at the only critical point:

f''(x) = 6\cdot x -18 (Eq. 2)

x = 6

f''(6) = 6\cdot (6)-18

f''(6) =18 (Absolute minimum)

Third, we evaluate the function at each extreme of the given interval and the critical point as well:

x = 2

f(2) = 2^{3}-9\cdot (2)^{2}+3

f(2) = -25

x = 6

f(6) = 6^{3}-9\cdot (6)^{2}+3

f(6) = -105

x = 12

f(12) = 12^{3}-9\cdot (12)^{2}+3

f(12) = 435

There are an absolute minimum (x = 6) and an absolute maximum (x = 12).

6 0
3 years ago
A driver averaged 49 miles per hour and took 10 hours to travel between two cities. What is the distance between the two cities
Vesnalui [34]

Answer:

The answer is 490

Step-by-step explanation:

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When you raise a number to a negative exponent, change the exponent to a positive and make the complete number a fraction with 1 as the numerator.

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3 years ago
Which two integers is 115 between?
Lady_Fox [76]

<em><u>Answer:</u></em>

115 is between 114 and 116 because they are the integers that are directly bigger than 115 and smaller than 115.

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A bag of 12 ounces of popcorn costs $4.80. What is the unit rate? (in others words what is the cost for one ounce) *​
masha68 [24]

Answer:

0.4

Step-by-step explanation:

$4.80 divided by 12 = 0.4

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