1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ahat [919]
2 years ago
7

A music school offers its students 8 different classes each semester. 4 of the classes are in music theory, 3 of the classes are

in music teaching, and 1 of the classes is in the instrument of the student's choice. Students are required to choose 3 classes. What is the probability that a randomly chosen student did not choose any music theory classes? Fill in the blanks for the answer below.
Mathematics
1 answer:
Bond [772]2 years ago
8 0

Answer:

5

Step-by-step explanation:

You might be interested in
50 meters to 20 meters<br><br> Increase or decrease?
Aleonysh [2.5K]

Answer:

Decrease

Step-by-step explanation:

50 is bigger than 20, so it's decreasing and the units are the same.

3 0
3 years ago
The graph represents a functionE(t). Describe why the graph represents a function. Identify the
barxatty [35]

Answer:

Domain: [0, ∞)

Range: [7850, ∞)

Step-by-step explanation:

A function is defined by the set of ordered pairs having different output values for every input value.

In the graph attached, for every input value (x-coordinates) there is a unique output (y-coordinates) value.

Therefore, graph represents a function.

Domain of the given function → [0, ∞)

Range of the function → [7850, ∞)

6 0
3 years ago
Help Please I will Give Brainliest if Correct!!
KengaRu [80]

Answer:

1/25 k^2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Round the following numbers to the nearest 1000
Fed [463]

Answer:

A. 5000 B: 12000 C 57000

Step-by-step explanation:

All you need to do is look at the hundreds place number and if it is below 4 or is 4 keep the number the same, if it is above 4, increase it by one.

8 0
3 years ago
Read 2 more answers
Suppose after 2500 years an initial amount of 1000 grams of a radioactive substance has decayed to 75 grams. What is the half-li
krok68 [10]

Answer:

The correct answer is:

Between 600 and 700 years (B)

Step-by-step explanation:

At a constant decay rate, the half-life of a radioactive substance is the time taken for the substance to decay to half of its original mass. The formula for radioactive exponential decay is given by:

A(t) = A_0 e^{(kt)}\\where:\\A(t) = Amount\ left\ at\ time\ (t) = 75\ grams\\A_0 = initial\ amount = 1000\ grams\\k = decay\ constant\\t = time\ of\ decay = 2500\ years

First, let us calculate the decay constant (k)

75 = 1000 e^{(k2500)}\\dividing\ both\ sides\ by\ 1000\\0.075 = e^{(2500k)}\\taking\ natural\ logarithm\ of\ both\ sides\\In 0.075 = In (e^{2500k})\\In 0.075 = 2500k\\k = \frac{In0.075}{2500}\\ k = \frac{-2.5903}{2500} \\k = - 0.001036

Next, let us calculate the half-life as follows:

\frac{1}{2} A_0 = A_0 e^{(-0.001036t)}\\Dividing\ both\ sides\ by\ A_0\\ \frac{1}{2} = e^{-0.001036t}\\taking\ natural\ logarithm\ of\ both\ sides\\In(0.5) = In (e^{-0.001036t})\\-0.6931 = -0.001036t\\t = \frac{-0.6931}{-0.001036} \\t = 669.02 years\\\therefore t\frac{1}{2}  \approx 669\ years

Therefore the half-life is between 600 and 700 years

5 0
3 years ago
Other questions:
  • If y=9 When x= -3 find x when y=6
    11·1 answer
  • Help plzz quick help me
    10·1 answer
  • What is the following sum ?
    12·2 answers
  • Help me please !!!!!!!!!!!!!!!!!!!
    9·1 answer
  • An older restaurant in the city has a fire insurance policy for $250,000. What is the cost if the rate used to calculate the pre
    6·1 answer
  • If you want to buy an item in a store that costs $15 and is on sale for 15% off, then how much would the item actually cost you
    9·2 answers
  • Rearrange the formula m =
    10·2 answers
  • How can u simplify 44/42?
    8·2 answers
  • The Sweater Shack is offering a
    12·2 answers
  • What is the equation of a line that is parallel to the line<br> whose equation is y = x + 2?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!