How many points are shared by two perpendicular lines

Answers

Answer 1

Answer: One point.
Two perpendicular lines can only cross each other in one point.

Hope this helps :)

Answer 2

Answer: One point. The perpendicular lines meet at the point they form 90°.
A fact :
Any two straight lines always have only one common point or none if they don't intersect.

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A group of related facts that use the same numbers is an

Answers

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If f(x)= -x+7 what is f(15)?

Answers

x = 15

Substitute that to equation

-(15) + 7

Answer:
f(x) = -8

F(x)=-x+7, and by saying “f(15)”, your saying x=15, since f(x) turns into f(15). So just replace all x’s with 15.

F(15)=-15+7
F(15)=-8

So -8 is the answer:)

Please help: The solution to which inequality is shown? A. y + 5 > –2 B. y + 5 ≥ –2 C. y + 5 < –2 D. y + 5 ≤ –2

Answers

You see that the first circle is between -10 and -5. This means that part of the inequality must be between these two values. In addition, the open circle means that the inequality is either less than or greater than, but not equal to. This rules out both B and D. Since the arrow is pointing to the right, this means that the inequality is greater than. Now let's look for the inequality with a value greater than a value between -10 and -5.

A.
y+5>-2
y>-7

C.
y+5<-2
y<-7

The one with greater than is A so that is your answer.

How can you use expressions and models to determine if expressions are equivalent

Answers

To check for equivalence, use properties of operations such as the Distributive Property. Two expression are said to be equivalent if they resulted in the same number after evaluation of each. You can both expand and factor expressions to generate equivalent expressions.

(4 marks)5. Solve the following equations:
a) x+5 = 7
b) 2x - 8 = 20
c) 4x - 6x = 200
d) x+1= 5
3

Answers

a) x + 5 = 7

x + 5 - 5 = 7 - 5 (Subtract 5 from both sides)

x = 2

b) 2x - 8 = 20

2x - 8 + 8 = 20 + 8 (Add 8 to each side)

2x = 28

2x/2 = 28/2 (Divide each side by 2)

x = 14

c) 4x - 6x = 200

-2x = 200

-2x/-2 = 200/-2 (Divide each side by -2)

x = -100 (Note that a negative number divided by a negative number is positive, whereas a positive number divided by a negative number is negative)

d) x + 1 = 5

x + 1 - 1 = 5 - 1 (Subtract 1 from each side)

x = 4

I think:
A) x=7-5
X= 2

B) 2x=20+8
2x= 28
X= 28/2
X= 14

C) -2x= 200
X= 200/-2
C= -100

D) x=5-1
X=4

City Park is in the shape of a regular pentagon.Each side of the pentagon is 2/5 mile long.What is the perimeter of City Park?

Answers

so you have 5 sides you can add 2/5+2/5+2/5+2/5+2/5 = 10/5 = 2 miles around the park. Or you can multiply 5 sides (pentagon) times each side of 2/5 mile thus..... 5*2/5 = 10/5 = 2 so this is also 2 miles around the perimeter.

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