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cestrela7 [59]
4 years ago
8

A professor teaches a small lecture class with 25 students. For a certain class, 22 students attend the lecture. What is the exp

erimental probability that a student is absent?
Mathematics
2 answers:
alexgriva [62]4 years ago
7 0
Your answer would be the fraction 3/25. If you're looking for a percentage, it would be 12%.
sdas [7]4 years ago
7 0
The probability would be 12%
If you're looking for the fraction.. I'm not sure about that part.. all I know is the percentage..
:)
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Convert the decimal to a fraction or mixed number 0.088
Sladkaya [172]
The answer is 11/125!

Here's how to do this:

<span>Step 1: 0.088 =  88⁄1000</span> 
<span>Step 2: Simplify  88⁄1000 =  11⁄125</span> 

<span>I hope this has helped! Good luck :)</span>
5 0
4 years ago
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WILL GUVE BRAINMIEST HURRY PLS
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Answer:

pi= 3.14159

r= half of diameter , it is 4

h= 20

v= pi (4) ^2 (20)

Step-by-step explanation:

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3 years ago
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Keesha has 10 more quarters than dimes, which, together, total $11.25. How many coins does she have in quarters and dimes?​
Rom4ik [11]

Assume Keesha has d dimes, so she has d + 10 quarters

Total money Keesha has is (d+10)*.25 + d*.1 = 11.25

or 0.35d + 2.5 = 11.25

Solving for d , d = 25

So Keesha has 25 dimes and 35 quarters, total of 60 coins

6 0
2 years ago
Can anyone help me with these questions plz
KonstantinChe [14]

Answers:

  • 7:    20 miles
  • 8:    28 miles

  • 9:   1 error
  • 10:   Their speed is 50
  • 11:   365 words in 5 mins

Step-by-step explanation:

  • #7 and #8

Our equation is: f=2.25+0.20(m-1)   With f meaning "fare" (price) and m meaning "miles".

Question 7 - Juan's fare for his ride costs $6.05. We must solve for m.

Step 1. Substitute - <em>Substitute the fare for f in the equation.</em>

6.05=2.25+0.20(m-1)

Step 2. Simplify/Solve - Solve for m.

6.05=2.25+0.20(m-1)

<em>- Distribute</em>

6.05=2.25+0.2m-0.2

<em>- Subtract 0.2 from 2.25</em>

6.05=2.05+0.2m

<em>- Subtract -2.05 from 6.05</em>

4=0.2m

<em>- Divide both sides by 0.2</em>

20=m

<u>And you have your answer of 20 miles.</u>

Question 8 - Same equation, different fare.

Step 1. Substitute

7.65=2.25+0.20(m-1)

Step 2. Solve

7.65=2.25+0.20(m-1)\\7.65=2.25+0.20m-0.20\\7.65=2.05+0.20m\\5.6=0.20m\\28=m

And like so, we have m = 28

  • Questions 9 - 11

<em>The equation given is S=\frac{1}{5} (w-10e). S =  typing speed, w = words per 5 mins, and e= errors.</em>

Question 9 -

<em>We are given this information: S = 55, W  = 285. We are solving for e</em>.

Substitute -

55=\frac{1}{5} (285 -10e)

Solve -

55=\frac{1}{5} (285 -10e)\\55=\frac{1}{5} (285 -10e)\\55= 57-2e\\-2=-2e\\1=e

So they would make 1 error.

Question 10 -

<em>Information given: 300 = w, 5=e. We are solving for S</em>

Substitute -

S= \frac{1}{5} (300-10(5))

Solve -

S= \frac{1}{5} (300-10(5))\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (250)\\S= 50

Their speed is 50.

Question 11 -

<em>Information given: S = 65, e = 4. We are solving for w.</em>

Substitute -

65=\frac{1}{5} (w-10(4))

Solve -

65=\frac{1}{5} (w-10(4))\\65=\frac{1}{5} (w-40)\\65=\frac{1}{5}w-8\\73=\frac{1}{5}w\\365=w

So w = 365.

  • Hoped this helped!~

7 0
4 years ago
Jan types an average rate of 12 pages per hour. At that rate, how long will it take to type 100 pages
Ymorist [56]
8 hours and 20 minutes
3 0
3 years ago
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