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3 years ago

If x+6 is an even integer, which one of the following must be an even integer?

2 answers:

4 0

D because for x+6 to be even, x must be even. So, a is incorrect because an even - an odd is not even and neither are b and c because of the same logic. However, when you multiply an even by a whole number, you get an even. And when you add an even number to that it is still even so D would be the answer.

Crazy boy [7]3 years ago

3 0

D is the answer to this question

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Let X denote the time from the present until the stock market hits 25,000. If X ≤ 1, you win $10, 000X. If X > 1, you win not

const2013 [10]

Answer: $6321

Step-by-step explanation:

Expected value is given as exactly what you might think it means intuitively, the return you can expect for some type of action.

The basic expected value formula is the probability of an event multiplied by the amount of times the event happens:(P(x) * n).

he formula for the Expected Value for a binomial random variable is:

P(x) * X.

X is the number of trials and P(x) is the probability of success.

The formula for calculating the Expected Value where there are multiple probabilities is:

E(X) = ∑X * P(X)

The equation is basically the same, but here you are adding the sum of all the gains multiplied by their individual probabilities instead of just one probability.

Calculating the expected value of winning as follows:

Given,

Fx= e^-x, x is greater or equal to 0

Now, P less than or equal to zero =

[-e^-x] ^1

e^-0 - e^-1

= 1 - e^-1

= 0.6321

and P(x>1) = 1-0.6321= 0.3679

Therefore,Let y= amount of winnings.

Based on the above given information,

y= $10000 0

P(y)= 0.6321 0.3679

The expected value of winning:

E(y) = ΣyP(y)

E(y) = 10000 × 0.6321 + 0 × 0.3679

E(y) = $6321

Therefore, the expected value of winning is $6321

5 0

3 years ago

A 12 pack of soda is roughly $2.52. What is the cost per one can of soda?

Natalka [10]

Answer:

$2.52/12= $.21

the cost of one can of soda is $.21

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

HELP?

poizon [28]

My "work" is to enter the equations into a graphing calculator and let it show me the answers--just as your "work" is to copy the question to Brainly.

The solutions are
(x, y) = (-0.5, 7.5)
(x, y) = (3, 25)

_____
When you equate the expressions for y, you get the quadratic
2x² -5x -3 = 0
(2x +1)(x -3) = 0
x = -1/2 or 3
y = 5(x +2) = 15/2 or 25

4 0

3 years ago

Find all real solutions of the equation. (Enter your answers as a comma-separated list.)

34kurt

Answer:

0,1

Step-by-step explanation:

x^2 − x = 0

Factor out an x

x(x-1) =0

Using the zero product property

x=0 x-1=0

Solving each equation

x=0 x-1+1 =0+1

x=0 x=1

The solutions are

x=0,1

7 0

3 years ago

Verify that the given segments are parallel.

AlekseyPX

Answer:

Step-by-step explanation:

M and N and QR

4 0

3 years ago