Answer:
x = 3
Step-by-step explanation:
The line of reflection is x = 3.
Yes, all numbers are real numbers because a number is a number, and nothing can change that. I hope this helps you!
Answer:
1) ∠ADB and ∠EDC
2)∠ADE and ∠BDC
Step-by-step explanation:
Definition of vertical angles: Each of the pairs of opposite angles made by two intersecting lines are known as vertical angles.
So, in the given figure there are two intersecting lines named as AC and EB
So, the pair of vertical angles are :
1) ∠ADB and ∠EDC
2)∠ADE and ∠BDC
Thus these are the pairs of vertical angles in the given figure .
Hence a pair of vertical angles in the figure are :
1) ∠ADB and ∠EDC
2)∠ADE and ∠BDC
This is the concept of trigonometry, we are required to calculate the number of floors the building has given the information above;
# floors=[height of the building]/[height of each floor]
height of each floor=17 ft
let the height of the building be,h.
h is given by;
tan theta=opposite/adjacent
theta=80
opposite=h
adjacent=75 ft
thus
tan 80=h/75
h=75 tan 80
h=425.35 ft
thus the number of floors will be:
425.35/17
=25.020≈25 floors
check by plugging into both equations
-8+4(3)=4
-8+12=4
4=4
-8+3(3)=1
-8+9=1
1=1
(8,3) is a solution of the system
