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velikii [3]
3 years ago
12

Diana can type 100 form letters

Mathematics
1 answer:
satela [25.4K]3 years ago
8 0

Answer:

it will take 3 hours long

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Alice, Bob, and Carl arrange to meet for lunch on a certain day. They arriveindependently at uniformly distributed times between
Svetllana [295]

Answer:

a. What is the probability that Carl arrives first?

Probability that Carl arrives first is ¹/₃ = 33.33% since their arrival times is uniformly distributed. The same probability applies to Bob and Alice.

b. What is the probability that Carl will have to wait more than 10 minutes for one of the others to show up?

Assuming that Carl arrived on time, 1:10 PM, we must determine the probability that Alice or Bob arrive between 1:20 and 1:30 (half the remaining time)

P = [3 · (¹/₂ - ¹/₃)] · [3 · (¹/₂ - ¹/₃)] = (3 · ¹/₆) · (3 · ¹/₆) = ¹/₂ · ¹/₂ = ¹/₄ = 25% chance that either Alice or Bob arrive more than 10 minutes later

c. What is the probability that Carl will have to wait more than 10 minutes for both of the others to show up?

P = 1 - 25% = 75%

d. What is the probability that the person who arrives second will have to wait more than 5 minutes for the third person to show up?

I divided the 20 minutes by 5 to get ¹/₄:

P (|S - T| ≤ ¹/₄) = {[(x + ¹/₄)²] / 2} + (1 / 2x) + {[(⁵/₄ - x)²] / 2} = 0.09375 + 0.25 + 0.09375 = 0.4375 = 43.75%

4 0
3 years ago
Show proof for all of these (for points, brainlist.) 880 x 12 = 10560 (proof)
sertanlavr [38]

Answer: Multiply 93 by 804 and that will give you

74772x

Multiply 12 by 880 and that will give you

10560x

Exact Form:

1977

Decimal Form:

28.14285714…

Mixed Number Form:

2817

Multiply 687 by 98 that will give you

67326  

Multiply 936 by 39 and that will give yoou

36504x

Step-by-step explanation:

3 0
3 years ago
Which choice is equivalent to the expression below? -25 <br>​
Pavel [41]

Answer:

Option A.

Step-by-step explanation:

The given expression is

-25

According to the reflexive property of equality, all values are equal to itself.

a = a

where, a be any real number.

Using the reflexive property we can say that

-25=-25

It means -25 is equal or equivalent to -25.

Therefore, the correct option is A.

Note: If the given expression is \sqrt{-25}, then

\sqrt{-25}=\sqrt{25}\sqrt{-1}        [\because \sqrt{ab}=\sqrt{a}\sqrt {b}]

\sqrt{-25}=5i             [\because \sqrt{-1}=i]

Then the correct option is B.

5 0
4 years ago
Read 2 more answers
Pleasee help me, it says evaluate the numerical expressions. decide whether they are equivalent, what’s the value of 84 - 14
Rainbow [258]
Boi are you asking what’s 84-14??

It’s 74

3 0
3 years ago
Please answer this ASAP!!!<br><br> Attachment is below, also the chooses are all true or false.
SCORPION-xisa [38]

Answer: true, false, false, true

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
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