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
djyliett [7]
3 years ago
7

It takes 2 hours for faucet A to fill a tank, and it takes faucet B 3 hours. How many hours will it take the faucet to fill the

tank together
Mathematics
1 answer:
Sergeu [11.5K]3 years ago
4 0

Answer:

  1.2 hours

Step-by-step explanation:

A fills 1/2 tank per hour; B fills 1/3 tank per hour, so together they fill ...

  1/2 +1/3 = 3/6 +2/6 = 5/6 . . . . tank per hour

The reciprocal of this rate give the rate in the units we want:

  6/5 hours per tank.

__

At that rate, it will take 6/5 = 1.2 hours to fill the tank.

You might be interested in
Please help, a major part of my grade.
omeli [17]

Answer:

Password for the journal of my friends are here for you do you want to be when I I don't think know have

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is 5 and 1/2 divided by 1/2 step by step ?? It would mean a lot!
dimulka [17.4K]

Answer:

11

Step-by-step explanation:

Use a calculator. Punch in 5.5, then use the divide symbol (÷) and finally put in 0.5, then you will get 11 as your final answer.

Hope this helps!

4 0
3 years ago
This graph shows how the length of time a bicycle is rented is related to the rental cost. What is the rate of change shown in t
Romashka-Z-Leto [24]

Answer:

$4/ hour

Step-by-step explanation:

every hour you go you add 4 dollars

example: 1 hour is $2

                2 hours is $6

8 0
4 years ago
4. Assume that the chances of a basketball player hitting a 3-pointer shot is 0.4 and the probability of hitting a free-throw is
vovikov84 [41]

Answer:

0.0334 = 3.34% probability that the player will make exactly 3 3-pointers and 5-free throws.

Step-by-step explanation:

For each 3-pointer shot, there are only two possible outcomes. Either the player makes it, or the player does not. The same is valid for free throws. This means that both the number of 3-pointers and free throws made are given by binomial distributions.

Since 3-pointers and free throws are independent, first we find the probability of making exactly 3 3-pointers out of 10, then the probability of making exactly 5 free throws out of 10, and then the probability that the player will make exactly 3 3-pointers and 5-free throws is the multiplication of these probabilities.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Probability of making 3 3-pointers out of 10:

The chances of a basketball player hitting a 3-pointer shot is 0.4, which means that p = 0.4. So this is P(X = 3) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{10,3}.(0.4)^{3}.(0.6)^{7} = 0.21499

Probability of making 5 free throws out of 10:

The probability of hitting a free-throw is 0.65, which means that p = 0.65. The probability is P(X = 5) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{10,5}.(0.65)^{5}.(0.35)^{5} = 0.15357

Calculate the probability that the player will make exactly 3 3-pointers and 5-free throws.

0.21499*0.15537 = 0.0334

0.0334 = 3.34% probability that the player will make exactly 3 3-pointers and 5-free throws.

5 0
3 years ago
HALP ME PLZZ ASAP NO LINKS
skad [1K]

Answer:

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • The vampires play 20 games. The team won 4 more games then it lost. How many games did the vampires won
    12·2 answers
  • Can you please help me with number one and number 2 thank you
    12·2 answers
  • In the image, two circles are centered at A. The circle containing B was dilated to produce the circle containing B′. What is th
    13·2 answers
  • Nine more than the quotient of a number and two
    11·1 answer
  • Simplify : -26b^2 + (-27b^2)
    12·2 answers
  • Hurry I need the answer 500 x 500 +2500
    13·2 answers
  • Joel bought a new baseball glove for $24.00. He received a discount of 20% off the original price. Which fraction or decimal is
    14·1 answer
  • HELP I NEED HELP ASAP
    8·1 answer
  • A cyclist rode 3.75 miles in 0.3 hours. How much of an hour will it take her to go 4.5 miles?
    7·2 answers
  • Determine if x + 3 is a factor of -3x^3+6x^2+6x+9 How do you know
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!