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
scoray [572]
3 years ago
6

Can someone help me with this and explain: Compute 28P7

Mathematics
1 answer:
sp2606 [1]3 years ago
3 0
Using the factorial notation of the permutation formula, we get:

nPr = \frac{n!}{(n - r)!}
28P7 = \frac{28!}{(28 - 7)!}
= 28 \cdot 27 \cdot 26 \cdot 25 \cdot 24 \cdot 23 \cdot 22
= 5 967 561 600
You might be interested in
If you have 30$ and you need to find 8%, and add to 30$ then find 15% of that, and what’s your total?
stira [4]

Answer:

Our total amount value is $4.86.

Step-by-step explanation:

The total amount given is $30.

Now  8 % of $30 = \frac{8}{100}  \times 30 = 2.4

or, 8% of $30  = $2.4

Now adding $30 and $2.4,

$ 30 + $2.4  = $32.4

Finding 15% of the total $32.4,

we get  \frac{15}{100} \times 32.4 = 4.86

or, 15% of $32.4   = $4.86

hence, our total amount value is $4.86.

5 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.
pshichka [43]
Hello!

The sum of all angle measures in a heptagon in 900°. We will subtract all of these angles from 900 to find our answer.

900-146-122-142-140-110-142=98

x=98°

I hope this helps!
4 0
3 years ago
Read 2 more answers
The first angle of a triangle is 4 times the number of degrees in the second angle. The third angle of the triangle is 12 degree
xenn [34]

Answer:

1st angle: 128°

2nd angle: 32°

3rd angle: 20°

Step-by-step explanation:

You can start by setting up an equation. 180=x+4x+x-12. It sould all add up to 180 because angles of a triangle always add up to 180, and x represents the second triangle (you use the second angle as x because the other two angles elaborate off of this second angle).  Then you solve. Add 12 to 180 and get 192. Then you can add like terms and make it 192=6x (you add the x's together). Lastly divide 192 by 6 and get 32. So the measurement of angle 2 is 32°. Then you multiply 32 by 4 to get the 1st angle measure, being 128. Lastly subtract 12 from 32 and get 20 for angle three. To check you work add the three angle measures you got and see if they =180, if so then you are correct.

5 0
3 years ago
Write an<br> th<br> explicit formula for<br> an<br> the n<br> term of the sequence 15, 13, 11, ....
Alborosie

Answer:

n=-2

Step-by-step explanation:

Because when you are looking at the numbers they drop by two, so the answer must be decreasing by n= -2.

4 0
3 years ago
Read 2 more answers
Can someone help me please?
Gwar [14]

Answer:

10.5 cm^2

Step-by-step explanation:

Area of a triangle = 1/2(L x H)

Reading from the diagram

length = 7 cm

height = 3 cm

therefore

Area of the triangle = 1/2( 7×3)

Area = 10.5 cm^2

4 0
3 years ago
Other questions:
  • What Is the answer to -0.35 times -1 3/7
    15·1 answer
  • a recipe uses 3 cups of gated cheese to make 10 servings. how much cheese is needed to make 6 servings?
    9·1 answer
  • 243.875 to the nearest ten
    14·2 answers
  • Sin55+cos55=2^1/2/sec10​
    6·1 answer
  • What are the answers to the following questions???? i need help ASAP
    6·1 answer
  • Which expression is equivalent to -30 - 8x + 50 - 2x?
    12·2 answers
  • Two cities are 400 miles apart. If the scale on a map reads Inch = 50 miles , find the distance between the cities on the map,​
    10·1 answer
  • CORRECT ANSWER WITH EXPLANATION WILL GIVE BRAINLIEST!!!
    13·2 answers
  • Pls help me find the value of x
    6·1 answer
  • What percent of 29 is 3? Round to the nearest tenth or tenth of a percent
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!