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2 years ago

If the Math Olympiad Club consists of 15 students, how many different teams of 5 students can be formed for competitions?

Mathematics

1 answer:

seropon [69]2 years ago

4 0

Answer:

3003

Step-by-step explanation:

Teams of 5 from the total of 15 students.

<u>Combination of 5 is:</u>

nCr = n!/(n-r)!*r!
15C5 = 15!/10!5! = 15*14*13*12*11/(2*3*4*5) = 3003 teams

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Brianna waiting to a bakery and bought two cookies and three brownies costing a total of 950 Nivea went into the same bakery and

Vitek1552 [10]

Complete Question

Brianna waiting to a bakery and bought two cookies and three brownies costing a total of 950.

Nivea went into the same bakery and bought ten cookies and six brownies costing a total of 250

Answer:

The system of equations that could be used to determine the price of each cookie and the price of each brownies

is:

2x + 3y = 950.... Equation 1

10x + 6y = 250..... Equation 2

Where:

The price of cookies = x

The price of brownies = y

Step-by-step explanation:

Let

The price of cookies = x

The price of brownies = y

Brianna waiting to a bakery and bought two cookies and three brownies costing a total of 950.

2x + 3y = 950.... Equation 1

Nivea went into the same bakery and bought ten cookies and six brownies costing a total of 250

10x + 6y = 250..... Equation 2

The system of equations that could be used to determine the price of each cookie and the price of each brownies

is:

2x + 3y = 950.... Equation 1

10x + 6y = 250..... Equation 2

8 0

2 years ago

I keep getting the same answer and I know I am using the right formula.

netineya [11]

From March 10 to May 12 = 63 days.

63 days / 365 days = 0.1726 years.

Simple interest formula = Interest = Principal X interest rate x time

Interest = 15305.50 - 15000 = 305.50

Principal = 15000

Time = 0.1726 years

Replace the values into the formula:

305.50 = 15000 x Interest rate x 0.1726

Simplify:

305.50 = 2589.041 x interest rate

Solve for interest rate:

interest rate = 305.50 / 2589.041

interest rate = 0.11799 x 100

Rate = 11.80%

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2 years ago

What is 26 cm/s =__ m/min

UkoKoshka [18]

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2 years ago

Point (8, 11); Slope =-1/4

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

Point (8, 11); Slope =-1/4

y - y₁ = m(x - x₁)

y - 11 = (-1/4 ) (x - 8)

4 * (y -11) = -1 * (x -8)

4y - 44 = -x + 8

x - 8 + 4y - 44 = 0

x + 4y -52 = 0

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2 years ago

What is the numerical solution to the equation five less than three times a number equals four more than eight times rhetorical

Romashka-Z-Leto [24]

Answer:

3n-5=8n+4

Step-by-step explanation:

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2 years ago