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3 years ago

15 fish per fish tank

Mathematics

1 answer:

bixtya [17]3 years ago

6 0

Answer:

free points...?.i think...thanks eyy

Step-by-step explanation:

yey

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What is an angle whose vertex is the center of the polygon whose sides are drawn totwo consecutive vertices

Sliva [168]

Answer:

A central angle of a regular polygon is an angle whose vertex is the center and whose sides contain two consecutive vertices of the polygon. You can divide 360° by the number of sides to find the measure of each central angle of the polygon.

Hope it helps

7 0

3 years ago

What is the hypotenuse of 28 and 45

svlad2 [7]

Answer:

a² + b² = c²

28² + 45² = c²

784 + 2025 = 2809

Square root of 2809 is 53

The hypotenuse is 53

8 0

4 years ago

during a particular period a university's information technology office received 20 service orders for problems with printers, o

stira [4]

Answer:

0.2384 = 23.84% probability that 3 were laser printers.

Step-by-step explanation:

The printers will be chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x sucesses 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 sucesses.

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:

20 orders means that $N = 8$

8 were laser printers, which means that $k = 8$

Sample of 5 means that $n = 5$

What is the probability that 3 were laser printers?

This is P(X = 3).

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

$P(X = 3) = h(3,20,5,8) = \frac{C_{8,3}*C_{12,2}}{C_{20,5}} = 0.2384$

0.2384 = 23.84% probability that 3 were laser printers.

4 0

3 years ago

Simplify -6+[4-(x-2)]

lara31 [8.8K]

-6 + [4 - (x - 2)] = -6 + (4 - x + 2) = -6 + (6 - x) = -6 + 6 - x = -x

3 0

3 years ago

Read 2 more answers

The whittendale family purchases a new refrigerator on a no interest for one year plan. The cost is $1,385. There is no down pay

natali 33 [55]

The answer is 1385-11x.

5 0

3 years ago