Are these right? If not can you please tell me how to do it!!

Which of the following is an element in the sample space for first tossing a coin and then rolling a die? A.H6 B.43 C.TT D.2H

WINSTONCH [101]

First tossing a coin means the first has to be H or T.
Rolling a die means the second has to be a 1-6.
The only option that meets this criteria is LETTER A

4 0

3 years ago

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How to simplify bracket five x squared plus three x minus two bracket plus bracket three x minus two x plus five bracket

Scilla [17]

Answer:

5x^2 + 4x + 3.

Step-by-step explanation:

While I'm a little confused on what is closed and open parenthesis/brackets, I think I understand what you mean. In (5x^2+3x-2)+(3x-2x+5), the brackets can simply be removed as there is no multiplication between them. This means we get 5x^2 + 3x - 2 + 3x - 2x + 5. Combining like variables, we get 5x^2 + 4x + 3.

6 0

3 years ago

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Tom invests $10,000 in a savings account that offers 3.5 percent interest, compounded continuously.

Elena-2011 [213]

For the answer to the question above, I'm not sure if your question is incomplete or the data on your question is incomplete but I'll answer it anyway because some data are provided.

10,000(1+.035)^10
10,000(1.043)^10
10,000(1.41059876062)
=14,105.99

14,105.99/.035
=40, 3028.21
I still hope that this helps

5 0

3 years ago

Suppose that two electronic components in the guidance system for a missile operate independently and that each has a length of

lord [1]

Answer:

The probability density function for the average length of life of the two components is $f(x) = 0.5e^{-0.5x}$

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following probability density:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

Each missile has a length of life governed by the exponential distribution with mean 1 (with measurements in hundreds of hours). Find the probability density function for the average length of life of the two components.

2, each with mean 1 means that $m = 2*1 = 2, \mu = \frac{1}{2} = 0.5$

So the probability density function is:

$f(x) = 0.5e^{-0.5x}$

8 0

2 years ago

Which equations are in standard form? Check all that apply

professor190 [17]

Answer:

2x + 3y = -6

-4x + 3y = 12

5x + 3y = }

x - y = 5

Step-by-step explanation:

Standard Form is $Ax+By=C$ .

2x + 3y = -6, -4x +3y = 12, 5x + 3y = '?', and x - y = 5 are the equations that are in standard form.

'2x+3 = 6' does not have the 'y' to make it standard form.

'y = 2x + 5' is slope-intercept form.

5 0

3 years ago