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Eduardwww [97]
3 years ago
11

Which expressions are equivalent to 2 Superscript 5 times 2 Superscript 4? Check all that apply.

Mathematics
1 answer:
ratelena [41]3 years ago
3 0

Note: Consider the given figure attached with this question.

Given:

The expression is:

2^5\times 2^4

To find:

The equivalent expression.

Solution:

We have,

2^5\times 2^4

It can be written as:

2^5\times 2^4=2^{5+4}

2^5\times 2^4=2^{9}

So, option A is correct and option B is incorrect.

Similarly, in options C, D, E,

2\cdot 2^9=2^{10}

2^{10}\cdot 2^2=2^{12}

2^{-2}\cdot 2^{11}=2^{9}

So, options C and D are incorrect but option E is correct.

The given expression can be written as:

(2\cdot 2\cdot 2\cdot 2\cdot 2)\cdot (2\cdot 2\cdot 2\cdot 2)

So, option F is correct.

Therefore, the correct options are A, E F.

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Negative 3/2 times negative 5 1/4
Travka [436]
You mean -3/2 * -51/4??? 

use the calculator to multiply them and you will get 19.125
3 0
4 years ago
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
Rewrite the equation by completing the square.<br> 4x2 + 28x + 49 = 0<br> (x+) =
Vlada [557]

Answer: x = - 3.5

Step-by-step explanation:

Rewrite the equation by completing the square.

4x2 + 28x + 49 = 0

Completing the square method :

Divide through by the Coefficient of x^2

x^2 + 7x + (49/4) = 0

a = 1, b = 7, c = 49/4

Move c to the right side of the equation

x^2 + 7x = - 49/4

Complete the square on the left hand side by squaring its half of the x term

(7/2)^2 = (49/4)

Add the output to both sides of the equation

x^2 + 7x + (49/4) = - (49/4) + (49/4)

(x + 7/2)^2 = 0

Square root of both sides

x + 7/2 = 0

x = - 7/2

x = - 3.5

4 0
3 years ago
Nvm. ...................
MA_775_DIABLO [31]

Answer:

????

Step-by-step explanation:

well thanks for the free points :)

6 0
3 years ago
Question 8 c
balandron [24]
22 total tokens

15/22 is the probability you won’t draw a red
7 0
2 years ago
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