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rodikova [14]
3 years ago
14

Is ab perpendicular to cd A(0,2) B(-3,-3) C(-4,1)D(0,-2)

Mathematics
1 answer:
Nostrana [21]3 years ago
6 0
Find the slopes of the 2 line segments and see if they are negative reciprocals then the lines are perpendicular.
AB slope is -3-2/-3-0= -5/-3=5/3
CD slope is -2-1/0- -4=-3/4

The lines are not perpendicular
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Step-by-step explanation:

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Solve the equation a=m-n for the variable n
Bogdan [553]

Answer:

m-a = n

Step-by-step explanation:

a=m-n

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a-m = m-n-m

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Cards. A deck of 52 cards is shuffled and dealt. Find the probabilities of the following events: a) the tenth card is a queen; b
Veronika [31]

Answer:

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  • 0.0010

Step-by-step explanation:

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number of queen = 4

number of spades = 13

A) probability that the tenth card is a queen

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p(10,1,4/52) = 9C0(4/52)^1 * (48/52)^9 = 0.0374

B) probability the twentieth card is a spade

x = 20

r = 1

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P(20,1,26/52) = 19C0(26/52)^1 * (26/52)^19 = 0.0010

c)  The last five cards been spades

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4 0
3 years ago
X2 +x − 4 = 0
Rus_ich [418]

Answer:

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Step-by-step explanation:

The coefficient of x^2 is "a". That is 1.

The coefficient of x is "b". That is 1.

The constant term is "c". That is -4.

The values of a, b, and c are 1, 1, and -4, respectively.

_____

The solution is ...

  x = (-b ±√(b^2-4ac))/(2a)

Filling in the values of a, b, and c, this is ...

  x = (-1 ±√(1^2 -4·1·(-4)))/(2·1)

  x = (-1 ±√17)/2

3 0
3 years ago
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