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DENIUS [597]
3 years ago
10

Is ab perpendicular to cd ? Explain.

Mathematics
1 answer:
Afina-wow [57]3 years ago
4 0
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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Will give brainliest ^-^
ANEK [815]

area of square = 9 x 9 = 81 square feet


 area of 1 corner = 1/2 * 3 * 3 = 4.5 square feet

4.5 * 4 = 18 square feet total of all 4 corners

81 - 18 = 63 square feet total not covered by benches.


Please mark Brainliest.


3 0
3 years ago
Read 2 more answers
What is the value of X?
bearhunter [10]
Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

Let's first establish that the shape is a triangle meaning that the following formula is applicable as displayed below:

Angle sum of a triangle = 180°

As well as this, the shape is an equilateral triangle meaning that each angle of the triangle is equivalent in value. Also, the following formula is also applicable as displayed below:

Each angle of an equilateral triangle = the same value

Therefore:

Each angle of an equilateral triangle = angle sum of a triangle ÷ no. of angles in a triangle = 180° ÷ 3 = 60°

Based on this, the following is applicable:

2x - 4 = 60°

2x = 60 + 4

2x = 64

x = 64 / 2

x = 32°

ANSWER:

Therefore, the answer is:

The value of ( x ) is 32°


Please mark as brainliest if you found this helpful! :)
Thank you <3
8 0
3 years ago
Write the coordinate point for the vertex of this parabola: x=1/4y^2
ololo11 [35]
Hello :
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5 0
3 years ago
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Nata [24]
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7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csf%2010%2B2x%3D4" id="TexFormula1" title="\sf 10+2x=4" alt="\sf 10+2x=4" align="absmiddle"
Pachacha [2.7K]
10 + 2x = 4
-10
2x = -6
/2
x = -3

Answer: x = -3
4 0
1 year ago
Read 2 more answers
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