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IgorC [24]
3 years ago
8

HELP IM TAKING THE TEST The track team gives awards for first, second, and third place runners. There are 10 students from schoo

l A and 12 students from school B competing. Which expression represents the probability that all three awards will go to a student from school B? StartFraction 12 P 3 Over 22 P 3 EndFraction StartFraction 12 C 3 Over 22 C 3 EndFraction StartFraction 22 P 3 Over 22 P 12 EndFraction StartFraction 22 C 3 Over 22 C 12 EndFraction
Mathematics
2 answers:
Pie3 years ago
8 0

Answer:

A

Step-by-step explanation:

Just took test

-Dominant- [34]3 years ago
5 0

Answer:

Its NOT B

Step-by-step explanation:

I just took the test

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What is 3/4 - 1/2<br> Please help
DIA [1.3K]

Answer:

1/4

Step-by-step explanation:

1/2 is also equal to 2/4 since 2 is half of 4 so 3/4 minus 2/4 will get you 1/4

Please give brainliest :3

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3 years ago
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3 years ago
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A particle is moving with the given acceleration function and initial conditions. Find the velocity function and the position fu
Lerok [7]

Answer:

The velocity function is the particle is v(t)=-2\cos (t)-4\sin (t)-1.

Step-by-step explanation:

The acceleration function of a moving particle is

a(t)=2\sin (t)-4\cos (t)

The initial conditions are v(0) = −3, s(0) = 5.

Integrate the acceleration function with respect to time to find the velocity function.

\int a(t)=\int (2\sin (t)-4\cos (t))dt

v(t)=-2\cos (t)-4\sin (t)+C_1

Use the initial condition v(0) = −3 to find the value of C₁.

-3=-2\cos (0)-4\sin (0)+C_1

-3=-2(1)-4(0)+C_1

-3=-2+C_1

-3+2=C_1

-1=C_1

So the velocity function is the particle is

v(t)=-2\cos (t)-4\sin (t)-1

Integrate the acceleration function with respect to time to find the position function.

\int v(t)=\int (-2\cos (t)-4\sin (t)-1)dt

s(t)=-2\sin (t)+4\cos (t)-t+C_2

Use the initial condition s(0) = 5 to find the value of C₂.

5=-2\sin (0)+4\cos (0)-(0)+C_2

5=-2(0)+4(1)+C_2

5=4+C_2

1=C_2

So, the position function is the particle is s(t)=-2\sin (t)+4\cos (t)-t+1.

5 0
3 years ago
Two angles of a triangle have measures of 55° and 65°.
ivann1987 [24]
The third angle is 180-55-65 = 60°.

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7 0
3 years ago
Determine whether the following possible responses should be classified as interval, nominal or ordinal data.
faltersainse [42]

Answer:

1. Nominal data 2. Responses here can't be classified as interval or nominal or ordinal data 3.  Responses here can't be classified as interval or nominal or ordinal data  4. nominal

Step-by-step explanation:

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2. Possible values for the number of cars in a parking lot are 0, 1, 2, 3, 4,... Besides we can say that 4 cars is twice than 2 cars, and exist a true zero. We can't say that responses here correspond to interval data, in fact, we can say that responses here correspond to the kind of data called ratio data.

3. You can spend zero hours in your homework, so, there exists an absolute zero, besides, to say that you spend 4 hours in your homework is twice that if you spend 2 hours in your homework is meaningful. We can't classify responses here as interval data or ordinal or nominal. We can classify responses here as ratio data.

4. There are only two different responses here, i.e., You are a US citizen or You are not a US citizen. We are dealing with "labels" again, and in general, we can't say there is a better response or stablish an order.

6 0
3 years ago
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