All categories

3 years ago

Please help !!!! I’m confused

Mathematics

2 answers:

timama [110]3 years ago

5 0

Answer:

your answer is c

Step-by-step explanation:

i took the test so it's 101,250

Remember to show your work to understand it well!!

Zinaida [17]3 years ago

4 0

Answer:

101,250

Step-by-step explanation:

100,000 * (1 + 5%/(12/3)) = 100,000 * (1.0125) = 101,250

You might be interested in

How can you find the area of a irregular polygon using area formulas

kompoz [17]

A= 1/2 bxh because if you are trying to find area you have to use the the formula A=1/2 bxh

4 0

3 years ago

What is the formula for the expected number of successes in a binomial experiment with n trials and probability of success p? C

charle [14.2K]

Answer:

$(D)E[ X ] =np.$

Step-by-step explanation:

Given a binomial experiment with n trials and probability of success p,

$f(x)=\left(\begin{array}{c}n\\k\end{array}\right)p^x(1-p)^{n-x}, 0\leq x\leq n$

$E(X)=\sum_{x=0}^{n}xf(x)= \sum_{x=0}^{n}x\left(\begin{array}{c}n\\k\end{array}\right)p^x(1-p)^{n-x}$

Since each term of the summation is multiplied by x, the value of the term corresponding to x = 0 will be 0. Therefore the expected value becomes:

$E(X)=\sum_{x=1}^{n}x\left(\begin{array}{c}n\\x\end{array}\right)p^x(1-p)^{n-x}$

Now,

$x\left(\begin{array}{c}n\\x\end{array}\right)= \frac{xn!}{x!(n-x)!}=\frac{n!}{(x-)!(n-x)!}=\frac{n(n-1)!}{(x-1)!((n-1)-(x-1))!}=n\left(\begin{array}{c}n-1\\x-1\end{array}\right)$

Substituting,

$E(X)=\sum_{x=1}^{n}n\left(\begin{array}{c}n-1\\x-1\end{array}\right)p^x(1-p)^{n-x}$

Factoring out the n and one p from the above expression:

$E(X)=np\sum_{x=1}^{n}n\left(\begin{array}{c}n-1\\x-1\end{array}\right)p^{x-1}(1-p)^{(n-1)-(x-1)}$

Representing k=x-1 in the above gives us:

$E(X)=np\sum_{k=0}^{n}n\left(\begin{array}{c}n-1\\k\end{array}\right)p^{k}(1-p)^{(n-1)-k}$

This can then be written by the Binomial Formula as:

$E[ X ] = (np) (p +(1 - p))^{n -1 }= np.$

5 0

3 years ago

What is the slope of the line through the points (8, -2) and (8, -8)?

gulaghasi [49]

Answer:

Step-by-step explanation:

(-8+2)/(8-8)= -6/0= undefined

8 0

3 years ago

3) A box of chocolates contains five milk chocolates, five dark chocolates, and five white

nevsk [136]

Dependenttttttttttttttttttttttt

7 0

3 years ago

Can the sum of two mixed numbers be equal to explain

mel-nik [20]

Answer:no because mixed numbers need atleast a one and a fraction to be mixed number but if there was a fraction then it couldnt equal two because of the 1's

Step-by-step explanation:

8 0

3 years ago