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Marta_Voda [28]
3 years ago
14

15 r minus 6 r = 36. What is the value of r?

Mathematics
2 answers:
NeTakaya3 years ago
5 0

Answer:

r=4

Step-by-step explanation:

15r-6r=36

9r=36

r=36/9

r=4

vodomira [7]3 years ago
3 0

Answer:

r=4

Step-by-step explanation:

15r-6r=36

9r=36

r=36/9

r=4

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The source of the error when a computer system fails are either the disk drive, the computer memory, or the operating system. Ve
faltersainse [42]

Answer:

The probability of an operating system error given that a failure has ocurred is P(O/E)= 0.19

Step-by-step explanation:

Hello!

There are three different sources of error when a computer system fails:

D: disk drive error. ⇒ P(D)= 0.50

M: computer memory error. ⇒P(M)= 0.20

O: operating systems error. ⇒ P(O)= 0.30

According to the component perdormance standard:

The probability of failure "E", given that there is a disk drive error is P(E/D)= 0.40

The probability of failure "E", given that there is a computer memory error is P(E/M)= 0.6

The probability of failure "E", given that there is a operating system error is P(E/O)= 0.25

You need to calculate the probability of an operating system error given that a failure has ocurred, symbolically:

P(O/E)

P(O/E)= \frac{P(OnE)}{P(E)}

To reach the probability of the marginal E you have to add all intersections between the event "E" and the events "D", "M" and "O"

       D           M             O       Total

E:  P(E∩D); P(E∩M); P(E∩O);  P(E)

Using the formula of the conditional probability I'll clear all three intersections using the known probabilities:

General formula: P(A/B)= \frac{P(AnB)}{P(B)} ⇒ P(AnB)= P(A/B)*P(B)

P(E∩D)= P(E/D)*P(D)= 0.4*0.5= 0.2

P(E∩M)= P(E/M)*P(M)= 0.6*0.2= 0.12

P(E∩O)= P(E/O)*P(O)= 0.25*0.3= 0.075

P(E)= P(E∩D) + P(E∩M) + P(E∩O)= 0.2+0.12+0.075= 0.395

P(O/E)= \frac{P(OnE)}{P(E)} = \frac{0.075}{0.395}= 0.189 = 0.19

I hope it helps!

7 0
3 years ago
The temperature one morning was 72.5*C it was 5.5 degrees warmer by noon and the temperature dropped 8.25 degrees by early eveni
cluponka [151]
72.5 + 5.5 = 78

78 - 8.25 = 69.75

Warmer means good up and colder means going down
8 0
3 years ago
I need help with math questions
V125BC [204]

Answer:

10) C or D

11) C

12) B


Step-by-step explanation:


3 0
3 years ago
4) Oceanside Bike Rental Shop charges $17 plus $6 an hour for renting a
Tresset [83]

Answer:

It is 7

Step-by-step explanation:

y = mx+b

y is the total cost.

x is the number of hours.

b : that's 16 dollars.

y = 9x+16

 

The problem states that the cost was 79 dollars.

Substitute that for y and solve for x.

79 = 9x+16

63 = 9x

x = 7 hours

8 0
2 years ago
Question 4: 10 pts
UkoKoshka [18]

Answer:2

Step-by-step explanation: but it was real

7 0
2 years ago
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