Why does the term angle need to be defined prior to defining perpendicular lines?

Answers

Answer 1
Answer:

Answer:

Perpendicular means "at right angles".

A line meeting another line at a right angle, or 90° is said to be perpendicular to it.

This is why we need to know what are angles first.

Angles are defined as the space between two intersecting lines close to the point where they meet.

So, when we say perpendicular lines meet at 90° angles, we must know the definition of angles.

Answer 2
Answer:

Perpendicular lines are two or more lines that intersect at a 90-degree angle, like the two lines drawn on this graph, and the x and y axes that orient them.

 


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HELP TIMED TEST!!!!!!For what values of x is x2-36=5x true?

-9 and -4
-4 and 9
4 and -9
9 and 4

Answers

Answer:

-4 and 9

Step-by-step explanation:

factored

(x - 9)(x + 4) = 0

with   this  x*x - 5x - 36 = 0

so  x = 9  or  x = -4

Identify whether the given value of the variable makes the equation true. –5r – 6 = –26; r = 4

A.false

B.true

Answers

- 5 r - 6 = - 26       for r = 4

- 5 * ( 4 ) - 6 = - 26

- 20 - 6 = - 26

- 26 = -26 

B) true 

hope this helps!



There are 6 numbers on a normal dice. What is the probability that if you roll the dice, you'll get a number less than 5?

Answers

There are six numbers on a dice (6 out of 6). 
There are 4 numbers on a dice that are below 5 (4 out of 6)
So there is a 4 out of 6 chance (4/6) that you will roll a number less than 5.

Evaluate (a + b)2 for a = 2 and b = 3

Answers

All you need to do is replace the letters by their value


(a+b)

(2+3)

= 5


I hope that's help:)

The answer is (2+3)=5

find the lateral area and surface area of a right cone with radius 6 in. and height 8 in. give your answers in terms of pie

Answers

r=6in\n\nH=8in\n\nA=\pi rl\n\nPythagoras\ theorem:\n\nr^2+H^2=l^2\n\nl^2=6^2+8^2\n\nl^2=36+64\n\nl^2=100\n\nl=√(100)\n\nl=10\ (in)

A=\pi\cdot6\cdot10=60\pi\ (in^2)

Fifty is what percent of 40?A.


20%


B.


80%


C.


110%


D.


125%

Answers

the answer is A= 20.