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
kiruha [24]
2 years ago
11

What is 7P4 A: 28 B: 35 C: 210 D: 840

Mathematics
2 answers:
Semmy [17]2 years ago
4 0

Answer:

D

Step-by-step explanation:

using the definition of nP_{r} = \frac{n!}{(n-r)!}

where n! = n(n- 1)(n - 2)......× 3 × 2 × 1

here n = 7 and r = 4, hence

7P_{4}

= \frac{7!}{3!}

= \frac{7(6)(5)(4)(3)(2)(1)}{3(2)(1)} ← cancel 3 × 2 × 1 leaving

7P_{4} = 7 × 6 × 5 × 4 = 840 → D


pav-90 [236]2 years ago
3 0

Answer:

C. 210

Step-by-step explanation:

Evaluate the expression. Choose the best answer.

A. 840

B. 120

-C. 210-

D. 2,520

You might be interested in
Which of the following terminating decimals is equivalent to 3/8? 0.250 0.375 0.380 0.830
Llana [10]
.375=3/8 (ignore this))))))))))))))))))))))))))))))))))))))))))))))))))))

5 0
3 years ago
Read 2 more answers
Lol what.. its kinda bad tho
tino4ka555 [31]
What is bad ??!????????????!
6 0
3 years ago
Read 2 more answers
(05.08A)Triangle ABC is transformed to similar triangle A′B′C′ below:
Romashka-Z-Leto [24]

Answer:

1st option is correct i.e., 1 over 2

Step-by-step explanation:

Given that Triangle ABC transformed to Triangle A'B'C'.

Coordinated of Triangle ABC are A(2,6) , B(2,4) and C(4,4)

Coordinated of Triangle A'B'C' are A'(1,3), B'(1,2) and C'(2,2)

Scale factor of Dilation is the no. of times coordinates of vertices of a figure increase or decrease.i.e.,

if A(a,b) ⇒ A'(c,d)

where, a.k=c & b.k=d then k is scale factor of dilation.

Value of k is same for all vertices.

For coordinates of A & A' ,we have 2.k=1\implies k=\frac{1}{2} \:\: and \:\: 6.k=3\implies k=\frac{1}{2}

For coordinates of B & B' ,we have 2.k=1\implies k=\frac{1}{2} \:\: and \:\: 4.k=2\implies k=\frac{1}{2}

For coordinates of C & C' ,we have 4.k=2\implies k=\frac{1}{2} \:\: and \:\: 4.k=2\implies k=\frac{1}{2}

Therefore, the scale factor of dilation is \:\frac{1}{2}\:  since in all cases k=\frac{1}{2}

1st option is correct i.e., 1 over 2

3 0
3 years ago
Suppose an online auction website has roughly 500,000 users, and as each member signs up for an account,he or she is assigned a
julsineya [31]
D. Surveying every 500th number
7 0
3 years ago
Read 2 more answers
One-third of the dairy cattle on a farm are in the barn. Three-fifths of the beef cattle are in the barn. There are 30 dairy cat
SSSSS [86.1K]
There are 50 more dairy cattle than beef cattle.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the area of sector AOB. Express your answer in terms of pi and rounded to the nearest tenth.
    5·1 answer
  • Please provide an explanation...! I need help :(
    13·1 answer
  • Find the slope of a line passing through (6,3) and (6,9)
    14·2 answers
  • What is the ratio 15:2415:24 written in lowest terms? 7:87:8 5:85:8 3:53:5 3:4
    5·2 answers
  • Which rational function has zeros at x = 1 and x = 3?
    6·1 answer
  • A building code allows a maximum of 140 people in a meeting room. There is one large table in the room, along with some small ta
    14·2 answers
  • From a standard deck of cards, a 5-card hand is dealt. Calculate the number of hands that contain 4 diamonds and 1 black king
    11·1 answer
  • What is the slope of the graph shown?
    12·1 answer
  • A rectangular prism is made up of cubes. The prism is 8
    15·1 answer
  • Find the distance between the points. Round to two decimal places if necessary.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!