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
alukav5142 [94]
3 years ago
5

Combinatorics

Mathematics
1 answer:
kompoz [17]3 years ago
6 0

Answer:

235989936000

Step-by-step explanation:

To form 8 letter words from 30 letters

Using permutation :

nPr = n! ÷ (n-r)!

30P8 = 30! ÷ (30-8)!

30P8 = 30! ÷ 22!

30P8 = (30*29*28*27*26*25*24*23)

30P8 = 235989936000 words

You might be interested in
Elizabeth’s aunt started a college savings account for her with $6,000. What is the balance of the account after 5 years if the
vaieri [72.5K]

Answer:

6750

Step-by-step explanation:

simple interest = P×r%×t

P = $6000

r = 2.5%

t = 5 years

I = 6000 × 2.5/100 × 5

= 750

6000 + 750 = $6750

7 0
3 years ago
Daysi buys a video game on sale. If the video usually costs $30.00, and it
olasank [31]

Answer:

$22.5

Step-by-step explanation:

The original price is $30 and it's on sale for 25% off.  Since 25% is a quarter of the total price, I divided 30÷4=7.5.  $7.5 is 25% of $30, so 7.5 is the amount taken off the original price.  To find what Daysi paid, I subtracted 30-7.5=22.5.  $22.5 is the result after the 25% off, so Daysi paid $22.5.  

7 0
3 years ago
Some rectangles are not parallelograms
VARVARA [1.3K]

Answer:

I'm not sure what your asking, but, no, all rectangles are parallelograms.

I found this over the internet, and I hope it helps you understand why a rectangle is always a parallelogram, but a parallelogram is not always a rectangle:

It is true that every rectangle is a parallelogram, but it is not true that every parallelogram is not a rectangle. For instance, take a square. It's a parallelogram — it is a quadrilateral with two pairs of parallel faces. But it is also a rectangle — it is a quadrilateral with four right angles.

5 0
4 years ago
The distance between points A(1, -4) and B(x, -2) is <img src="https://tex.z-dn.net/?f=%5Csqrt%7B5%5Cbeta%20%7D" id="TexFormula1
11Alexandr11 [23.1K]

Answer:

5\beta ???

Step-by-step explanation:

please recheck the question ..

5 0
2 years ago
How to factor 75-12X^2
lianna [129]
75 - 12x^2 = 3(25 - 4x^2)
5 0
4 years ago
Other questions:
  • Which number is the best approximation for 4v5 -2v3<br> 0.5<br> 5.4<br> 6.9<br> 12.2
    14·1 answer
  • Write the equation, 2 times as many as 8 is 16
    15·2 answers
  • Add or subtract. Be sure to reduce your answer 2/3-4/9
    14·2 answers
  • Factor 3d^2 - d - 24
    5·1 answer
  • Find the volume of the backpack that is 17” x 12” x 4”. i would solve using l x w x h, but there is a hemisphere or something on
    9·1 answer
  • $20.600 at 8% for 2 years
    9·1 answer
  • The graph below shows the price vs. units sold. If the equation of the line of best fit is
    15·1 answer
  • A surgeon advised an operating room technician to arrange 12 drips of dextrose solution . The hospital has only 2 upon 3 of the
    13·1 answer
  • What is the image of (1,8) after a dilation by a scale factor of 5 centered at the origin?
    6·1 answer
  • A rectangle has a length of 32 yards less than 10 times its width. If the area of the rectangle is 384 square yards, find the le
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!