Solve the equation,if possible. And check the solution. 4/d = 2/6 Check:

A rectangular prism is 5 inches long and 10 inches wide. Its volume is 500 cubic inches. What is the height of the rectangular p

Scrat [10]

Answer:

10

Step-by-step explanation:

5 x 10 = 50

500 divided by 50 = 10

H=10

7 0

3 years ago

Six friend are sharing a pizza.the pizza is cut into eight equal slices.how many slices of pizza will each friend get if they sh

Paha777 [63]

If equally, they will each get 1.3 slices of pizza.

A weird amount of pizza.

6 0

3 years ago

In the game of roulette, a wheel consists of 38 slots numbered 0, 00, 1, 2,..., 36. To play the game, a metal ball is spun a

Oxana [17]

Answer:

$E(X)=-0.0526$

$Sd(X)=5.763$

Step-by-step explanation:

In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".

The variance of a random variable Var(X) is the expected value of the squared deviation from the mean of X, E(X).

And the standard deviation of a random variable X is just the square root of the variance.

Let X be a random variable which denotes the money you may win or lose on each spin.

In the game of roulette, a wheel consists of 38 slots. To play the game, a metal ball is spun around the wheel and is allowed to fall into one of the numbered slots. If the number of the slot the ball falls into matches the number you selected, we win $35; otherwise we lose $1. So we have just one possibility to win and 37 of lose on an individual game.

___________________________

X P(X)

___________________________

35 1/38

-1 37/38

___________________________

In order to calculate the expected value we can use the following formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$