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
Marina86 [1]
3 years ago
13

15 divided by 5/8 give me answer

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
3 0
15/ 5/8 is the same as 15 * 8/5 so that would be 120/5 or 24
You might be interested in
A fireman's ladder leaning against a house makes an angle of 50° with the ground. How long is the ladder if the ladder is 8 feet
antoniya [11.8K]

The ladder would be 12.4 feet hope that helps

5 0
3 years ago
Two sides of an isosceles triangle are 4 and 8. Which of the following choices could be the measure of the third side?
Feliz [49]

Answer:

8 is answer. isoceles triangles must have two equal sides, where the smaller makes the base and the two larger are the legs.

Step-by-step explanation:

4 0
3 years ago
If n is a positive integer, how many 5-tuples of integers from 1 through n can be formed in which the elements of the 5-tuple ar
Oksana_A [137]

Answer:

n + 4 {n \choose 2} + 6 {n \choose 3} + 4 {n \choose 4} + {n \choose 5}

Step-by-step explanation:

Lets divide it in cases, then sum everything

Case (1): All 5 numbers are different

 In this case, the problem is reduced to count the number of subsets of cardinality 5 from a set of cardinality n. The order doesnt matter because once we have two different sets, we can order them descendently, and we obtain two different 5-tuples in decreasing order.

The total cardinality of this case therefore is the Combinatorial number of n with 5, in other words, the total amount of possibilities to pick 5 elements from a set of n.

{n \choose 5 } = \frac{n!}{5!(n-5)!}

Case (2): 4 numbers are different

We start this case similarly to the previous one, we count how many subsets of 4 elements we can form from a set of n elements. The answer is the combinatorial number of n with 4 {n \choose 4} .

We still have to localize the other element, that forcibly, is one of the four chosen. Therefore, the total amount of possibilities for this case is multiplied by those 4 options.

The total cardinality of this case is 4 * {n \choose 4} .

Case (3): 3 numbers are different

As we did before, we pick 3 elements from a set of n. The amount of possibilities is {n \choose 3} .

Then, we need to define the other 2 numbers. They can be the same number, in which case we have 3 possibilities, or they can be 2 different ones, in which case we have {3 \choose 2 } = 3  possibilities. Therefore, we have a total of 6 possibilities to define the other 2 numbers. That multiplies by 6 the total of cases for this part, giving a total of 6 * {n \choose 3}

Case (4): 2 numbers are different

We pick 2 numbers from a set of n, with a total of {n \choose 2}  possibilities. We have 4 options to define the other 3 numbers, they can all three of them be equal to the biggest number, there can be 2 equal to the biggest number and 1 to the smallest one, there can be 1 equal to the biggest number and 2 to the smallest one, and they can all three of them be equal to the smallest number.

The total amount of possibilities for this case is

4 * {n \choose 2}

Case (5): All numbers are the same

This is easy, he have as many possibilities as numbers the set has. In other words, n

Conclussion

By summing over all 5 cases, the total amount of possibilities to form 5-tuples of integers from 1 through n is

n + 4 {n \choose 2} + 6 {n \choose 3} + 4 {n \choose 4} + {n \choose 5}

I hope that works for you!

4 0
3 years ago
in a game the player wins if he rolls a 6 on a number cube if the number cube is rolled 18 times then what is a reasonable predi
Dmitry_Shevchenko [17]

Answer:

There would be 15 unsuccessful rolls

Step-by-step explanation:

6 0
3 years ago
Solve each system by substitution.<br> 5) 5x + 3y =-23<br> y = 4
docker41 [41]

Answer:

(- 7, 4 )

Step-by-step explanation:

Given the 2 equations

5x + 3y = - 23 → (1)

y = 4 → (2)

Substitute y = 4 directly into (1_

5x + 3(4) = - 23, that is

5x + 12 = - 23 ( subtract 12 from both sides )

5x = - 35 ( divide both sides by 5 )

x = - 7

Solution is (- 7, 4 )

3 0
3 years ago
Other questions:
  • Five times a number k minus 9 is two thirds of a number j. solve for j
    5·1 answer
  • Evaluate -4 +(-3) - (-2)
    15·2 answers
  • Drag the numbers to order them from least to greatest. 0.9, −2.4, −0.8, 1.6, 0.2
    15·1 answer
  • what is A U B, if A={0,2,3,4,9,11}and B = {2,3,6,8,9,10}? A.{0,4 11 } B.{2,3,6,9} C.{1} D.{1,2} what is the answer
    12·1 answer
  • An irregular parallelogram rotates 360° about the midpoint of its diagonal. How many times does the image of the parallelogram c
    15·1 answer
  • What is char antonym?​
    7·2 answers
  • Jeffrey plans to rent a beach house for sister's birthday and will use the savings to pay for it the company charges to $25 clea
    12·1 answer
  • Can anyone help with this? 20 points
    12·1 answer
  • Find the other endpoint of the line segment with the given endpoint and midpoint.
    10·1 answer
  • Please help me best answer gets an brainlist !!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!