Answer with Step-by-step explanation:
We are given that an equivalence relation P on Z as
Let 
if and only if 
such that x-y=2k.
We have to show that how the reflexive property and symmetric property of an equivalence relations hold for P on Z.
We know that reflexive property
a is related to a by given relations.
If xPax then we get
Where k=0 and 0 belongs to integers.
Hence, the relation satisfied reflexive property.
Symmetric property :If a is related to b then b is related to b.
If x and y is related by the relation
where k is any integer
k belongs to integers.
Hence, relation satisfied symmetric property.
Answer: 78.5 ft
Step-by-step explanation: 25 times 3.14
Answer:multiplication
Step-by-step explanation:
First case: that's definitely a circle.
Second case: if you have a cross section / plane perpendicular to the base and passing thru the vertex, you have a triangle. Try drawing this.
Answer:
x = 286.01 inches
Step-by-step explanation:
Given that,
Height of the ramp, H = 20 inches
Angle of elevation, 
We need to find the value of x. It can be solved using trigonometry as follow :
Where
P is perpendicular and B is base
So,
So, the value of x is equal to 286.01 inches.
