If x = 5, find the value of (x+3)²

Mathematics

2 answers:

asambeis [7]2 years ago

7 0

Step-by-step explanation:

Given

if x = 5 Then

(x+ 3)²

= ( 5 + 3) ²

= 8²

= 64

Hope it will help :)❤

max2010maxim [7]2 years ago

3 0

X=5
(X+3)^2
(5+3)^2
8^2
64

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Suppose you open a new game at the county fair. When patrons win, you pay them $3.00; when patrons lose, they pay you $1.00. If

tatyana61 [14]

Answer:

$E(X) = 1 *0.8 - 3*0.2 = 0.2$

so at the long run we can conclude that the best option is :

A) win 0.20 cents per play

Step-by-step explanation:

Previous concepts

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

The variance of a random variable X represent the spread of the possible values of the variable. The variance of X is written as Var(X).

Solution to the problem

Let X the random variable who represent the ampunt of money win/loss at the game defined.

The probability of loss $3.00 for this game is 0.2 and the probability of win is 1-0.2=0.8 and you will recieve $1.00 if you win. The expected value is given by:

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

And for this case if we replace we got:

$E(X) = 1 *0.8 - 3*0.2 = 0.2$

so at the long run we can conclude that the best option is :

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3 years ago

Round 8,912 to the nearest ten

tamaranim1 [39]

Answer:

8910

Step-by-step explanation:

look at the number next to the ten ( in this case it's number 1) so to it's right we have 2. which is smaller than 5. so we just cancel it and every number to it's right. now we have 891 and we have to add a zero so it's 8910

Hope this helped and plz mark as brainliest!