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Ghella [55]
2 years ago
14

You are doing research on balance and fitness. To complete this research you will need a watch with a second hand. Identify a ra

ndom sample of n = 12 men and n = 8 women. You must answer this question: How do you establish that this sample is truly random?
Mathematics
1 answer:
Dafna1 [17]2 years ago
7 0

Answer:

Step-by-step explanation:

In order to establish that the sample is truly random you need to obtain two main factors. First, is making sure that the random sample of both groups chosen (men and women) are equal in proportion to the overall population. Meaning both groups must be the same percentage of the overall population of the same gender. The second factor that you need to make sure of is that all chosen individual's had the exact same probability of being chosen from the population and no external factor influenced the probability of them being chosen for the study.

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Andrew, who operates a laundry business, incurred the following expenses during the year. ∙ Parking ticket of $250 for one of hi
marysya [2.9K]

Answer:

Option d: $0

Step-by-step explanation:

Parking penalties arent deductible from expenses, so Andrew cant deduct neither the 250 for his delivery van nor the 75 for the rock concert. Dui tickets definetely arent deductable from expenses, so Andrew cant deduct the 500 from the ticket either. That gives us only 2 options: Andrew can deduct $600 (if he is able to deduct from attoeney's fee), else he cant deduct anything.

However, the attorney's fee shoudn't be deductible, because as a general rule, personal legal fees are not deductible. So the answer is option d, $0

7 0
3 years ago
If f(x)=-3x+4 and g(x)=2 solve for the value of x for which f(x) = g(x) is true
antiseptic1488 [7]
Set the equations equal to eachother. Make -3x+4 = 2 and solve. You got this!
5 1
3 years ago
Use appropriate algebra and theorem 7. 2. 1 to find the given inverse laplace transform. (write your answer as a function of t.
ollegr [7]

The given function s/(s^2 +3s -4) is proved with the help of inverse Laplace theorem.

According to the statement

we have to find the inverse of the Laplace theorem with the help pf the given theorem in the statement.

So, For this purpose, we know that the

Laplace transformation is a transformation of a function f(x) into the function g(t) that is useful especially in reducing the solution of an ordinary linear differential equation with constant coefficients to the solution of a polynomial equation.

Now, We assume you want to find the inverse transform of s/(s^2 +3s -4).

This can be written in partial fraction form as

\frac{(4/5)}{(s+4)} + \frac{(1/5)}{(s-1)}

which can be found in a table of transforms to be the transform of

\frac{4}{5} e^{-4t} + \frac{1}{5} e^t

There are a number of ways to determine the partial fractions. They all start with factoring the denominator.

s^2 +3x -4 = (s+4)(s-1)

After that, you can postulate the final form and determine the values of the coefficients that make it so.

For example:

\frac{A}{(s+4)}  + \frac{B}{s-1}  = (A+B)s + \frac{(4B-A)}{(s^2 +3x -4)}

This gives rise to two equations:

(A+B) = 1

(4B-A) = 0.

So, The given function s/(s^2 +3s -4) is proved with the help of inverse Laplace theorem.

Disclaimer: This question was incomplete. Please find the full content below.

Question:

Use appropriate algebra and theorem 7.2.1 to find the given inverse laplace transform. (write your answer as a function of t.) ℒ−1 s s2 + 3s − 4.

Learn more about Laplace here

brainly.com/question/11630973

#SPJ4

3 0
2 years ago
Simplify the fraction 16/38
Art [367]
The correct answer of 16/38 simplified is 8/19
6 0
3 years ago
An art gallery sells paintings at 0.35 per square inch. if a painting is 2 feet 3 inches by 3 feet 5 inches. how much would the
Natalka [10]

Hello!

ANSWER

The painting would cost $387.45.

____________________________________________________________

EXPLANATION

2' 3" = 27"

3' 5" = 41"

Multiply the length by the width (in inches) of the painting.

27 * 41 = 1107

We now know that the area of the painting is 1107in.^{2} Next, multiply the cost per square inch (0.35) by the total amount of square inches (1107).

.35 * 1107 = 387.45



7 0
2 years ago
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