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3 years ago

I really need help, I’m having a quiz tomorrow yet I struggle to understand the concept of this stuff...

Mathematics

1 answer:

uranmaximum [27]3 years ago

3 0

Here it goes:

a. Because you have four blue marbles out of the 12 total marbles, the probability is 4/12. YOU MUST SIMPLIFY down to 1/3.

b. There are 12 marbles in the bag right now, and the probability is 4/12, you must add some marbles. 1/10 multiplied by 4 is 4/40. There are 4 blue marbles right now, and 40 minus the 12 there are right now is 38, so you would need to add 38 non-blue marbles.

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Software to detect fraud in consumer phone cards tracks the number of metropolitan areas where calls originate each day. It is f

pashok25 [27]

Answer:

0.999987

Step-by-step explanation:

Given that

The user is a legitimate one = E₁

The user is a fraudulent one = E₂

The same user originates calls from two metropolitan areas = A

Use Bay's Theorem to solve the problem

P(E₁) = 0.0131% = 0.000131

P(E₂) = 1 - P(E₁) = 0.999869

P(A/E₁) = 3% = 0.03

P(A/E₂) = 30% = 0.3

Given a randomly chosen user originates calls from two or more metropolitan, The probability that the user is fraudulent user is :

$P(E_2/A)=\frac{P(E_2)\times P(A/E_2)}{P(E_1)\times P(A/E_1)+P(E_2)\times P(A/E_2)}$

$=\frac{(0.999869)(0.3)}{(0.000131)(0.03)+(0.999869)(0.3)}$

$\frac{0.2999607}{0.00000393+0.2999607}$

$\frac{0.2999607}{0.29996463}$

= 0.999986898 ≈ 0.999987

6 0

3 years ago

Your statement balance is 600.00 You have an outstanding checks for

pochemuha

Answer:

Step-by-step explanation:

600+125+175=900-400(deposit)=500

600-125-175-300-200=100+400=500

Brainliest Please :)

8 0

3 years ago

How many inches is each slice of pizza?

mariarad [96]

Hey!

First, let's find the area. The formula for finding area of a circle is: π · r²

Radius is ½ of the diameter. Divide the diameter by 2 to get the radius.

d = 18

18 ÷ 2 = 9

r = 9

r² = 9 × 9 = 81

The area of the whole pizza is 81π. There are 10 slices. Divide the area of the whole pizza by 10 to find the area of 1 slice.

81π ÷ 10 = 8.1π

<em>That means each slice is 8.1π inches²</em>

4 0

3 years ago

Read 2 more answers

The track team is trying to reduce their time for a relay race. First they reduce their time by 1.2 minutes. Then they are able

Digiron [165]

Answer:

5.2 Minutes, or 5 minutes and 12 seconds

Step-by-step explanation:

You can solve this problem by working backward. Since our number gets smaller by a 1/10 or 0.1, in order to work backward we must multiply 3.60 by 10/9, since one tenth has been taken away already. When we do this, we get 4.0. When we add 1.2 minutes to that, we get a final answer of 5.2 minutes, or 5 minutes and 12 seconds.

5 0

3 years ago

Qué procedimiento debe realizar para convertir kilómetros a mililitros

natulia [17]

Answer:

multiplica el valor de volumen por 1e+15

Step-by-step explanation:

4 0

3 years ago