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
algol13
3 years ago
14

True or False

Mathematics
1 answer:
Rama09 [41]3 years ago
7 0

Answer:

True

Step-by-step explanation:

Permutation is act of arranging members of a set while combination is selection of the items from collection.

The number of permutation of r object out of n is:

^nP_r=\frac {n!}{(n-r)!}

The number of combinations of r object out of n is:

^nC_r=\frac {n!}{(n-r)!\times r!}

Or,  

^nC_r=\frac {^nP_r}{r!}

So, number of the permutations of r objects out of n is greater than number of the combinations of r objects out of n.

You might be interested in
Si un automóvil tiene 1.500 kg de masa y una velocidad de 5 m/s, ¿cuál es la energía cinética de un automóvil?
yarga [219]

Answer:

E = 18750 J

Step-by-step explanation:

The question is "If a car has a mass of 1,500 kg and a speed of 5 m / s, what is the kinetic energy of a car?"

Mass, m = 1500 kg

Speed, v = 5 m/s

We need to find the kinetic energy of the car. The formula for kinetic energy is given by :

K=\dfrac{1}{2}mv^2\\\\K=\dfrac{1}{2}\times 1500\times (5)^2\\\\K=18750\ J

So, 18750 J is the kinetic energy of the car.

7 0
3 years ago
The lengths of a lawn mower part are approximately normally distributed with a given mean = 4 in. and standard deviation = 0.2 i
Charra [1.4K]

Answer:

68 %

Step-by-step explanation:

Let's call X to the random variable ''lengths of a lawn mower part''.

X ~ N(given mean;standard deviation)

X ~ N(4 in;0.2 in)

To find the percentage,first we are going to turn this random variable X into a random variable Z. Z will be a N(0;1)

We do this by subtracting the given mean to the original variable and dividing by it deviation.

P (3.8 in < X < 4.2 in) =

P [(3.8 in - 4 in) / (0.2 in)] < [(X - 4 in)] / (0.2 in) < [(4.2 in - 4 in) / (0.2 in)]

P ( -1 < Z < 1 ) = P (Z < 1) - P (Z< -1)

Where we can find  P (Z < 1) and  P (Z< -1) in any table of a N(0;1)

P (Z < 1) - P (Z< -1) = 0.8413 - 0.1587 = 0.6826 = 68%

5 0
3 years ago
Read 2 more answers
Mitchell solves the following system of equations using the elimination method.
antiseptic1488 [7]
Multiply the first equation by 2 or divide the second one my 2, to get the #X opposites, to cancel each other out

-4x+6y=12
4x-6y=-6

Or

-2x+3y=6
2x-3y=-3

there’s no solution either way
7 0
3 years ago
Find the circumference of the circle. Round your answer to two decimal places, if necessary.
babymother [125]

Answer:

Trust me! I got this on a test!

C≈12.57in

4 0
3 years ago
Read 2 more answers
In how many ways can you make exactly $0.75 using only nickels, dimes, and quarters, if you must have at least one of each
Volgvan

Answer:

2 quarters, one nickel and two dimes

Step-by-step explanation:

2 quarters = 25 cents + 25 cents = 50 cents

Nickel is 5 cents

Two dimes is 10+10 = 20

50+20+5=75

6 0
3 years ago
Other questions:
  • A woman drives an SUV that gets 15 mpg. Her husband drives a hybrid that gets 55 mpg. Every week they travel the same number of
    11·1 answer
  • Are these collinear(coincident), parallel, perpendicular, oblique(intersecting)
    7·1 answer
  • Need help with this, please help
    12·2 answers
  • 7^2 - 13 divided by 24-18
    5·2 answers
  • The measure of minor arc JL is 60°.
    15·2 answers
  • On the first play of the game, the Rampagers throw a screen pass. The receiver, Jimmy Surehands, catches the ball 3.8 yards behi
    11·1 answer
  • Given the function f(x) = −2x2 + 3x + 10, find f(1) and f(3). Choose the statement that is true concerning these two values.
    6·1 answer
  • Calcula el volumen. Largo: 50cm Largo: 35cm Largo: 40cm Ancho: 30cm Ancho: 20cm Ancho: 60cm Alto: 20cm Alto: 50cm Alto: 30cm Vol
    14·1 answer
  • Andrea paid $60.75 for 9 sandwiches. Each sandwich costs the same amount.
    5·1 answer
  • When x increases from a to a+2, y increases by a factor of 16. For which function is the statement true?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!