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
Mama L [17]
2 years ago
8

Can someone help me please

Mathematics
1 answer:
ss7ja [257]2 years ago
3 0

Answer:I think it’s c

Step-by-step explanation:

You might be interested in
A track star runs two races on a certain day. The probability thathe wins the first race is 0.7, the probability that he wins th
NARA [144]

Answer:

a) 80% probability that he wins at least one race.

b) 30% probability that he wins exactly one race.

c) 20% probability that he wins neither race.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that he wins the first race.

B is the probability that he wins the second race.

C is the probability that he does not win any of these races.

We have that:

A = a + (A \cap B)

In which a is the probability that he wins the first race but not the second and A \cap B is the probability that he wins both these races.

By the same logic, we have that:

B = b + (A \cap B)

The probability that he wins both races is 0.5.

This means that A \cap B = 0.5

The probability that he wins the second race is 0.6

This means that B = 0.6

B = b + (A \cap B)

0.6 = b + 0.5

b = 0.1

The probability that he wins the first race is 0.7.

This means that A = 0.6

A = a + (A \cap B)

0.7 = a + 0.5

a = 0.2

A) he wins at least one race.

This is

P = a + b + (A \cap B) = 0.2 + 0.1 + 0.5 = 0.8

There is an 80% probability that he wins at least one race.

B) he wins exactly one race.

This is

P = a + b = 0.2 + 0.1 = 0.3

There is a 30% probability that he wins exactly one race.

C) he wins neither race

Either he wins at least one race, or he wins neither. The sum of these probabilities is 100%.

From a), we have that there is an 80% probability that he wins at least one race.

So there is a 100-80 = 20% probability that he wins neither race.

6 0
3 years ago
carlos walked to school on 14 of the 20 school days in february.Witch value is equivalent to the fraction of the school days in
KIM [24]

Answer:

14/20 or simplified 7/10 it can also be shown as 70% or 0.7 or 0.70

Step-by-step explanation:

8 0
2 years ago
What is the answer to this I really need help it is due tomorrow and it's 9:00 in the night
snow_tiger [21]
Whats your problem I can help you, what type of problem is it?
7 0
3 years ago
Could someone explain number 18?
Stolb23 [73]
The process and answer are in the picture. If you’re satisfied, could you please give me a brilliant answer! :)

4 0
2 years ago
Read 2 more answers
What is a measurement of benchmark??
Vinil7 [7]
A measurment of a bench mark is a benchmark or line that indicates numbers

5 0
2 years ago
Read 2 more answers
Other questions:
  • Use scientific notation to estimate the number of inches in 1,225 miles
    11·1 answer
  • Jordans have a rectangular garden. want to build a diagonal pathway across he garden. the length of pathway is 90 ft. width of g
    15·2 answers
  • Nine less than two times a number is no less than the sum of five times the number and two
    10·1 answer
  • Juan has invested $3500 in a stock transaction. He later sold the stock and received $4553.50. What was Juan's return on investm
    5·1 answer
  • Change 1 h 25 min 29 s to s.​
    11·2 answers
  • Trent earns $19.50 per hour for his 40 hour work week. How much does he earn each week? Question 3 options: $877.50 $800.00 $809
    6·2 answers
  • Which equation has the same solution as x^2-6x-12=0
    11·1 answer
  • Solve the equation 2[x]>14
    13·1 answer
  • Lines x and y are parallel and are cut by the transversal b. If the measure of angle 1 is 57°, what is the measure of angle 6? E
    14·1 answer
  • What is the exact value of <br> sin
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!