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umka2103 [35]
3 years ago
5

A club with 31 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many

ways can this be done?
Mathematics
1 answer:
Ksivusya [100]3 years ago
5 0
If you take 31*5 that equals = 155 ways! <span />
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Simplify the expression. 8(s-1)
TEA [102]

Answer:

8s-8

Step-by-step explanation:

Use the distributive property: #(a-b) = #*a - #*b. In this case 8s - 8.

Hope it helps!

6 0
3 years ago
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I honestly need to know how to take some of my stuff down cause apparently it’s bad to show something‍♀️
Lena [83]

Answer: 40%

Step-by-step explanation:

Total: 760.

304 of 760 as a percentage = 40%.

760 - 304 = 456.

456 of 760 as a percentage = 60%.

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3 years ago
Students in a zoology class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. After t​
juin [17]

Answer:

a. 73; b. 48.9; c. 2; d. 33.8; e. 73

Step-by-step explanation:

Assume the function was

S(t)= 73 - 15 ln(t + 1), t  ≥ 0

a. Average score at t = 0

S(0) = 73 - 15 ln(0 + 1) = 73 - 15 ln(1) = 73 - 15(0) =73 - 0 = 73

b. Average score at t = 4

S(4) = 73 - 15 ln(4 + 1) = 73 - 15 ln(5) = 73 - 15(1.61) =73 - 24.14 = 48.9

c. Average score at t =24

S(24) = 73 - 15 ln(24 + 1) = 73 - 15 ln(25) = 73 - 15(3.22) =73 - 48.28 = 24.7

d. Percent of answers retained

At t = 0. the students retained 73 % of the answers.

At t = 24, they retained 24.7 % of the answers.

\text{Percent retention} = \dfrac{\text{24.7}}{\text{73}} \times 100 \, \% = \text{33.8 \%}\\\\\text{The students retained $\large \boxed{\mathbf{33.8 \, \%}}$ of their original knowledge after two years.}

e. Maximum of the function

The maximum of the function is at t= 0.

Max = 73 %

The graph below shows your knowledge decay curve. Knowledge decays rapidly at first but slows as time goes on.

 

6 0
3 years ago
Susana walks 1/4 of a mile every thirty<br> minutes. How far did she walk in 1<br> hour?
Cloud [144]
She walks 2/4 of a mile in 1 hour
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3 years ago
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Nikolay [14]

Answer: You will save $228 dollars after 12 weeks

Step-by-step explanation:

3 0
3 years ago
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