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2 years ago

9

Tori invests $1,500 into the stock market which earns 9% per year. In 20 years, how much will Tori's investment be worth if inte

rest is compounded semiannually (twice a year)?

1 answer:

kipiarov [429]2 years ago

4 0

$\bold{ANSWER:}$
$8725

$\bold{EXPLANATIONS:}$

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The perimeter of a rectangular swimming pool is represented by the expression 8x – 2.

sineoko [7]

Im pretty sure your answer would be D, 6x

but tell me if im wrong.

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2 years ago

Help and explain pls and thankyouu

defon

Hello,

1)

$\left\{\begin{array}{ccc}2x-y&=&7\\-2x+3y&=&9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}2y&=&16\\-2x+3y&=&9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&8\\-2x+3*8&=&9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&7.5\\y&=&8\\\end{array} \right.\\\\$

Answer C

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$\left\{\begin{array}{ccc}x-2y-3z&=&5\\x+2y+3z&=&7\\x+z&=&3\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}2x&=&12\\x+2y+3z&=&7\\x+z&=&3\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&6\\2y+3z&=&1\\z&=&-3\\\end{array} \right.\\\\\\\\\left\{\begin{array}{ccc}x&=&6\\y&=&5\\z&=&-3\\\end{array} \right.\\\\\\$

Answer C

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3 years ago

2 – 1 + 5 x 4 x 11 Solve with PEMDAS

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3 years ago

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Help please!!.Use estimation to check the answer to this story problem.

romanna [79]

Answer:

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Step-by-step explanation:

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2 years ago

There are 11 students on a committee. To decide which 4 of these students will attend a conference, 4 names are chosen at random

Alina [70]

Answer:

0.003 = 0.3% probability that Sarah, Jamal, Kate, and Mai are chosen in any order.

Step-by-step explanation:

The students are chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of successes.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

11 students means that $N = 11$

4 are Sarah, Jamal, Kate, and Mai, so $k = 4$

4 are chosen, which means that $n = 4$

What is the probability that Sarah, Jamal, Kate, and Mai are chosen in any order?

This is P(X = 4). So

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 4) = h(4,11,4,4) = \frac{C_{4,4}*C_{7,0}}{C_{11,4}} = 0.003$

0.003 = 0.3% probability that Sarah, Jamal, Kate, and Mai are chosen in any order.

7 0

3 years ago