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
Dahasolnce [82]
2 years ago
5

An Olympic swimmer can swim 50 meters in 21 seconds. How long would it take the swimmer to swim 800 meters if he kept up the sam

e pace?
Mathematics
1 answer:
ICE Princess25 [194]2 years ago
7 0

Answer:

It would take 336 seconds

Step-by-step explanation:

Set up as a proportion:

50 meters/21 seconds = 800 meters/x

Then we cross multiply to find the answer:

336 = x

You might be interested in
Ariel was playing basketball. 1 of her shots went in the hoop. 2 of her shots did not going the hoop. how many shots were there
Xelga [282]

There were 3 shots total.

5 0
3 years ago
Read 2 more answers
I need help rn please​
nirvana33 [79]

Hello!

\large\boxed{\text{ slope = -3}}

Use the slope formula to solve for the slope of the line (m):

m = \frac{y^{2} -y^{1} }{x^{2} -x^{1} }

We can plug in the points (0, 4) and (1, 1) to solve:

m = \frac{1-4}{1-0}= \frac{-3}{1}  = -3

Therefore, the slope of the line is -3.

8 0
3 years ago
19 x 9 short division
Colt1911 [192]

Answer:

170

Step-by-step explanation:

your welcome np 8 hope you appreciate it

3 0
2 years ago
A college professor never finishes his lecture before the end of the hour and always finishes his lectures within 2 min after th
Citrus2011 [14]

Answer:

Value of k is \displaystyle\frac{3}{8}      

Step-by-step explanation:

We are given the following information in the question:

f(x) = kx^2, 0\leq x \leq 2\\~~~~~~~= 0, \text{ otherwise}

where x is the time elapses between the end of the hour and the end of the lecture.

We have to find the values of k.

Since, f(x) is the pdf, then,

\displaystyle\int^\infty_{-\infty} f(x) = 1\\\\\displaystyle\int^2_{0} f(x) = 1\\\\\displaystyle\int^2_{0} kx^2 = 1\\\\k\bigg[\frac{x^3}{3}\bigg]^2_0 = 1\\\\k\times \frac{8}{3} = 1\\\\k = \frac{3}{8}

Hence, value of k is \displaystyle\frac{3}{8}

4 0
2 years ago
Police estimate that​ 25% of drivers drive without their seat belts. If they stop 6 drivers at​ random, find the probability tha
Furkat [3]

Answer:

17.80% probability that all of them are wearing their seat belts.

Step-by-step explanation:

For each driver stopped, there are only two possible outcomes. Either they are wearing their seatbelts, or they are not. The drivers are chosen at random, which mean that the probability of a driver wearing their seatbelts is independent from other drivers. So we use the normal probability distribution to solve this problem.

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.

Police estimate that​ 25% of drivers drive without their seat belts.

This means that 75% wear their seatbelts, so p = 0.75

If they stop 6 drivers at​ random, find the probability that all of them are wearing their seat belts.

This is P(X = 6).

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

P(X = 6) = C_{6,6}.(0.75)^{6}.(0.25)^{0} = 0.1780

17.80% probability that all of them are wearing their seat belts.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Salvador has saved 130 sand dollars and wants to give them away equally to n friends. Write an expression to
    13·1 answer
  • Hellllllllpppppppppppppppppppppppp
    5·1 answer
  • Un productor agricola tiene que envasar huevos en cajas de 12, de 6 o de 30. Si sabemos que tiene un numero parecido a 1000 huev
    9·1 answer
  • John made 12 dollars per delivery plus a base pay of 30 dollars. If he made 150 dollars, how
    7·1 answer
  • What is 0.3 of 14? The 0.3 might be a percent
    12·1 answer
  • Lupe has 500 Mexican pesos. If 1 U.S. dollar equals 12.87333 pesos, about how many dollars can Lupe buy for her pesos?
    9·1 answer
  • Percent of change<br><br>original:1.5<br>new:2.5<br><br>please show work​
    8·1 answer
  • Jayla drove 7 5/12 kilometers to the post office and 8 1/24 kilometers to a restaurant. What expression can be used to determine
    11·1 answer
  • HELP QUICK PLSSSSSS Distribute 8(4+x)
    10·2 answers
  • For an angle θ, tan(θ) is a negative number. Which quadrants might θ be in?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!