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2 years ago

If line AB has a slope of -1/2 and is perpendicular to Line CD, then the slope of line CD is

Mathematics

2 answers:

Leni [432]2 years ago

7 0

Take the opposite recporical of the slope give...so the so that would be. 2.

lara31 [8.8K]2 years ago

3 0

when two lines are perpendicular, switch the numerator and denominator of the given slope, add a negative sign in the front, you will have the slope of the other line.
if the slope is an integer, for example 3, it is the same as 3/1, the slope of the perpendicular line is then negative 1/3, (-1/3)
in this case, the slope of CD is -(-2/1)=2

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Write the following in terms of sin θ only.<br> cot θ

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$\bf cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)}
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3 years ago

Is ab perpendicular to cd ? Explain.

Afina-wow [57]

We know that
if two lines are perpendicular
then
the slopes
m1*m2=-1

step 1
find the slope AB
A (0,2)
B (-3,-3)
m=(y2-y1)/(x2-x1)-----> m=(-3-2)/(-3-0)-----> m=-5/-3----> m1=5/3

step 2
find the slope CD
C (-4,1)
D (0,-2)
m=(y2-y1)/(x2-x1)-----> m=(-2-1)/(0+4)-----> m=--3/4----> m2=-3/4

step 3
multiply mi*m2
(5/3)*(-3/4)-----> -15/12
so
15/12 is not -1
therefore
AB is not perpendicular to CD

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3 years ago

A bag of marbles contains 28 red marbles, 30 green marbles, and 24 yellow marbles. What is the ratio of red marbles to yellow ma

Basile [38]

Answer:

The answer to your question is 7:6

Step-by-step explanation:

Data

Number of red marbles = 28

Number of green marbles = 30

Number of yellow marbles = 24

Radio = ?

Process

1.- Write the ratio

Red marbles : Yellow marbles

2.- Substitution

28 : 24

3.- Simplification

-Divide both terms by 2

14 : 12

-Divide by two both terms

7 : 6

-It is not possible to simplify more.

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