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stira [4]
3 years ago
7

In how many ways can the eight rooks be placed on an 8-by-8 chessboard so that no two rooks can attack one another?

Mathematics
1 answer:
saul85 [17]3 years ago
7 0
You have a total of (8!)^2/8! and that gets you. 40,320
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777dan777 [17]

Answer:

one solution, (-1,0)

Step-by-step explanation:

4 0
2 years ago
Durind the summer, Ms. Stevenson likes to swim. Her goal next summer is to swim1,456 laps. If she swims 28 laps a day, how many
WINSTONCH [101]

Answer:

52

Step-by-step explanation:

1456/ 28 = 52 days

6 0
3 years ago
Read 2 more answers
consider the line y= 2/3x-0. Find the equation of the line that is parallel to this line and passes through the point (8, 4).
tresset_1 [31]
Point-slope form of a line: we need a point (x₀,y₀) and the slope "m".
y-y₀=m(x-x₀)

slope intercept form :
y=m+b

m=slope

If the line is parallel to y=2/3 x-0, the line will have the same slope, therefore the slope will be: 2/3.

Data:
(8,4)
m=2/3

y-y₀=m(x-x₀)
y-4=2/3(x-8)
y-4=2/3 x-16/3
y=2/3 x-16/3+4
y=2/3 x-4/3  (slope intercept form)

Answer: The equation of the line would be: y=2/3 x-4/3.


if we have the next slope "m",then the perendicular slope will be:
m´=-1/m

We have this equation: y=2/3 x+0; the slope is: m=2/3.

The perpendicular slope will be: m`=-1/(2/3)=-3/2

And the equation of the perpendicular line to : y=2/3 x+0, given the point (8,4) will be:

y-y₀=m(x-x₀)
y-4=-3/2 (x-8)
y-4=-3/2 x+12
y=-3/2x + 12+4
y=-3/2x+16

answer: the perpendicular line to y=2/3 x+0 , given the point (8,4) will be:
y=-3/2 x+16
3 0
3 years ago
Can you put 150 177 205 163 172 190 186 168 155 in order
Eduardwww [97]
150, 155, 163, 168, 172, 177, 186, 190, 205
6 0
3 years ago
Find the Compound Amount.
crimeas [40]
A=p(1+i/m)^mn
A=980×(1+0.08÷4)^(4×5)
A=1,456.23
3 0
3 years ago
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