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
klasskru [66]
2 years ago
14

Seven runners are competing in a race in how many different orders can the runners cross the finish line

Mathematics
2 answers:
kolezko [41]2 years ago
7 0

Answer:

5040

Step-by-step explanation:

hope this helps =)

anastassius [24]2 years ago
6 0

You would multiply 7x6x5x4x3x2x1 to get your answer.

 Because there are 7 runners that can get 1st, 6 runners that can get 2nd, 5 runners that can get 3rd, and so on.

7x6x5x4x3x2x1= 5040 different possible combinations.

You might be interested in
Is anyone here from my school.
defon

Answer:

what school?

Step-by-step explanation:

3 0
3 years ago
FIND THE VOLUME OF THE SPHERE
svp [43]

Answer:

about 65.4 inches cubed

Step-by-step explanation:

The formula for the volume of a sphere is 4/3πr^3.

V = 4/3πr^3

   = 4/3π(2.5^3)

   = 20.83π = <u>about 65.4 inches cubed</u>

4 0
2 years ago
In a clinical study, volunteers are tested for a gene that has been found to increase the risk for a disease. The probability th
MrRa [10]

Answer:

a) 0.984

b) 20 people

Step-by-step explanation:

a)

If The probability that a person carries the gene is 0.1, then in a sample of 20 people, 2 should carry the gene.

Now, we want to know how many samples there are with this property.

Since we have 20 elements where 18 are alike (do not carry the gene) and 2 are alike (carry the gene), we have to compute the number of permutations of 20 elements in which 18 are alike and 2 are alike. This number is

\frac{20!}{18!2!}=190

In this 190 20-tuples there are only 3 where the 2 carriers of the gene are in the first 3 places, namely

(1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

(1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

(0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

where 1=carries the gene, 0=does not carry the gene.

So there are 190-3 = 187 elements in which the first 3 elements have no 2 carriers, hence the probability that 4 or more people will have to be tested until 2 of them with the gene are detected is 187/190 = 0.984 (98.4%) rounded to three decimal places.

b)

Given that the probability that a person carries the gene is 0.1, then in a sample of 20 people, 20*0.1 = 2 should carry the gene.

4 0
3 years ago
3/8+1/8-2/7+1/4=<br> what is the answer
Vinvika [58]

Answer: my butt

Step-by-step explanation: like it?

6 0
3 years ago
A student estimated that it would take 3 hours to write a book report, but it actually took her 5 hours. what is the percent err
Masteriza [31]

40 percent 3/5 equals 60, 5/5 equals 100, 100-60 equals 40 percent

4 0
3 years ago
Other questions:
  • Which equation Can pair with x-y=-2 to create a consistent and dependent system
    9·2 answers
  • The perimeters of similar triangles are in the same ratio as the corresponding sides.
    9·2 answers
  • What is 8.478 in word form?
    6·2 answers
  • If f(x)=-4x—2 is vertically translated 6 units up to g( x ) what is the y-intercept of g(x)
    13·1 answer
  • Plsss help!!!!!!!!!!!
    11·1 answer
  • I need helppppppppp<br>​
    8·2 answers
  • 4. Lynn can walk two miles intenta
    6·1 answer
  • What is the order of the angles from largest to smallest?
    12·1 answer
  • Find the perimeter. Simplify your answer.
    15·1 answer
  • Write 5 next terms:1;2;4;7;11;16​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!