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Liono4ka [1.6K]
3 years ago
14

A club has 15 members and needs to choose 2 members to be co-presidents. In how many ways can the club choose its co-presidents?

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
4 0

Answer:

15 choose 2 = 105

=\frac{15!}{2!\left(15-2\right)!}

Step-by-step explanation:

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Alice, Ben, and Calvin are waiting at a taxi stand, since taxis are the only ride service in this town. Although they haven’t me
mr_godi [17]

Answer: $17.78; 26.67; 35.56

Step-by-step explanation:

Given the following information.:

Price of cab = $2 per mile , irrespective of the number of passengers.

Alice's destination = 20 miles

Ben's destination = 30 miles

Calvin's destination = 40 miles

If the three share a cab, the cab fee will be (cost per mile * number of miles of the farthest destination).

($2 * 40) = $80

Let price = a, for 20 miles

Ben's mile = 30 miles = 1.5 times Alice's miles, then Ben's pay = (1.5a)

Calvin's mile = 40 miles = 2 times Alice's miles, then Calvin's pay = (2a)

Thus,

a + 1.5a + 2a = $80

4.5a = $80

a = $80 / 4. 5

a = $17.78

Ben's pay = 1.5a = $26.67

Calvin's pay = 2a = $35.56

8 0
3 years ago
Please tell me the anser ♥️
kykrilka [37]
B. the answer is b!!!!!!!!!
7 0
3 years ago
I need to find all sides and angles
Amanda [17]
Oops ignore it mate asks else
6 0
3 years ago
Each week, Rosario drives to an ice skating rink that is 120 miles away. The round-trip takes 2.75 hours. If he averages 55 mile
ycow [4]
Distance = rate * time

trip there,  120 = 55 *t
                   t = 2 and 2/11 hours

trip back,  120 = r * (2.75 - 2.181818181)  round trip time - time to get there
                 120 = r * .568181818181818
                  r = 211.2 miles per hour

thinking maybe you did not copy the problem accurately...thats pretty fast. 
6 0
4 years ago
Read 2 more answers
I need helpppppp i have no idea what im looking at lol
stepan [7]

By applying the Tan trigonometric formula, the value of the tangent for angle A is equal to: A. 3√91/91.

<h3>How to find the value of the tangent for <A?</h3>

In order to determine the value of the tangent for <A, we would apply Pythagorean theorem:

AB² = AC² + BC²

40² = AC² + 12²

AC² = 1600 - 144

AC = √1456

AC = 4√91 in.

Now, we can determine the value of the tangent for <A by applying the Tan trigonometric formula:

TanA = Opp/Adj

TanA = BC/AC

TanA = 12/4√91

TanA = 3√91/91.

Read more on trigonometry functions here: brainly.com/question/4515552

#SPJ1

6 0
2 years ago
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