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matrenka [14]
3 years ago
13

HELPPP!! I’ll mark brainliest!!

Mathematics
2 answers:
Sedaia [141]3 years ago
8 0

Answer:

A

Step-by-step explanation:

Dafna1 [17]3 years ago
4 0
Your answer is letter A. Hope this helps
You might be interested in
The equation 9t = 27.99 models a constant rate situation.
jeka94

The value of 5t will be 15.55

Step-by-step explanation:

Given equation is;

9t = 27.99

As it is stated that the relationship is constant, therefore, we will find the value of t by dividing 27.99 by 9

t=\frac{27.99}{9}\\\\t=3.11

Now, we will put t=3.11 to find 5t.

5t=5(3.11)\\5t=15.55

The value of 5t will be 15.55

Keywords: division, multiplication

Learn more about multiplication at:

  • brainly.com/question/13063819
  • brainly.com/question/13219835

#LearnwithBrainly

3 0
3 years ago
If i have three rolls of a dice and for the first and second you choose to either keep your roll or keep going, what is the best
AleksAgata [21]

Answer:

  • On the first roll, we keep a result of 5 or 6, and roll again if it is 4 or lower
  • On the second roll, we keep any result equal or greater that 4 and we roll again for 1,2 or 3
  • We keep anything we obtained from the third row

The expected value is 14/3 = 4.666

Step-by-step explanation:

When you throw a roll the expected value is 3.5 (the average of 1,2,3,4,5 and 6). This means that any roll with value 3 or below is worth changing, because the expected value will transform into 3.5 from the 3 or less you had before.

This means that in your second roll you will keep the result as long as it is 4 or more and you will roll once more if it is 3 or less, hence, you can

  • get a 4, 5 and 6 on your second roll and keep it, so that your value is that number
  • get 1, 2 or 3 on your second roll and roll again, with an expected value of 3.5.

Rolling a third time has a probability of 3/6 = 0.5, obtaining a 4 has a probability of 1/6, same for 5 and 6. Thus, the expected value from the second roll onwards is

1/2 * 3.5 + 1/6 * 4 + 1/6 * 5 + 1/6 * 6 = 4.25

This means that, after the first roll, we can keep that value or throw again with an expected value of 4.25 (using the strategy depicted above). We can roll again if we got a result of 4 or below expecting a higher value or keep a result of 5 or 6.

The strategy can be ssummarized as follows

  • On the first roll, we keep a result of 5 or 6, and roll again if it is 4 or lower
  • On the second roll, we keep any result equal or greater that 4 and we roll again for 1,2 or 3
  • We keep anything we obtained from the third row

The probability of getting 4 or below is 4/6 = 2/3, and the expected value for the second roll onwards is 4.25, hence the expected value of the strategy we pick is

1/6 * 5 + 1/6*6 + 2/3* 4.25 = 4.666 = 14/3

8 0
3 years ago
I need help and the time is running please help
Alex Ar [27]

Answer:

I think its B

Step-by-step explanation:

I'm sorry if I'm wrong. I'm busy

7 0
2 years ago
Read 2 more answers
What is the answer to (13x+30)-(20x+6)
AlekseyPX
Answer:

-7x + 24

Explanation:

(13x + 30) - (20x + 6)

13x + 30 - 20x - 6

-7x + 30 - 6

-7x + 24
8 0
2 years ago
The hover dam contains 3 1/2 millon cubic yards of concrete.The grand coulee dam contains 2 1/2 times as much. How much concrete
Margarita [4]

grand coulee dam (g) contains 2.5 times as much concrete as the hover dam (h)

Therefore,

g = 2.5 * h

h = 3.5 million

g = 2.5 * 3.5

g = 8.75 million yards of concrete

8 0
3 years ago
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