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Maksim231197 [3]
3 years ago
7

How many ways can teacher arrange 4 students in front row of class with 30 students

Mathematics
2 answers:
harina [27]3 years ago
8 0
30 choices for first seat
29 for 2nd
28 for 3rd
27 for 4th

answer is 30*29*28*27=657720 ways
Cloud [144]3 years ago
6 0
Choose 4 students from 30 
means 30P4
657720
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Help me please with the question I will mark BRAINLIEST ​
Semmy [17]

Answer:

  • 4^12
  • 6^7
  • 8^5
  • 7^3

Step-by-step explanation:

apply the indices law

  1. multiple means addition
  2. division means subtraction
  3. you are suppose to add the powers or subtract where necessary
  4. 4^9x 4^3= 4^5
  5. 6^5x6^2=6^7
  6. 8^6÷8=8^5
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6 0
3 years ago
what happens to the value of the expression 5/x + 5 as x decreases froma large positive number to a small positive number
agasfer [191]

Answer:

The value increases

Step-by-step explanation:

the smaller the divisor, the larger the quotient.

7 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
IrinaVladis [17]

Answer:  C= (3,2) and D=(2.2, 2.8)

Step-by-step explanation:

The coordinates of point P(x,y) divides a line segment having end points M{x_1,y_1} and N(x_2,y_2) in m:n will be :-

x=\dfrac{mx_2+nx_1}{m+n}\ ;\ y=\dfrac{my_2+ny_1}{m+n}

Given : The endpoints of AB are A(1,4) and B(6,-1).

If point C divides AB in the ratio 2 : 3, the coordinates of point C will be :-

x=\dfrac{2(6)+3(1)}{2+3}\ ;\ y=\dfrac{2(-1)+3(4)}{2+3}

Simplify,

\\\\\Rightarrow x=3\ y=2

Thus , coordinate of C= (3,2)

If point D divides AC in the ratio 3 : 2, the coordinates of point D will be :-

x=\dfrac{3(3)+2(1)}{3+2}\ ;\ y=\dfrac{3(2)+2(4)}{3+2}

Simplify,

\\\\\Rightarrow x=3\ y=2

Thus , coordinate of D= (2.2,2.8)

4 0
4 years ago
Read 2 more answers
F (n) = 65 - 100n<br> f (39) =
yan [13]

f(39)=65-100(39)

65-3900

= -3835

6 0
3 years ago
What is the simplified form of the quantity of x plus 4, all over 5 + the quantity of x plus 5, all over 5?
Novay_Z [31]
Thats the right answer.
6 0
4 years ago
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