Step-by-step explanation:
(25x+8)°+(9x+2)°=180--->(1)(sum of angles on a straight line
(7y+5)°=(9x+2)°------------->(2)(vertical angles)
25x°+8°+9x°+2°=180°
34x°=170°
x=5°
from equation (2) substitute for x=5°
7y°+5°=9x°+2°
7y°+5°=9(5)°+2°
7y°=47°-5°
7y°=42°
y=6°
(x, y)=(5°,6°)
1/4hr+1/6hr=time per customers
=5/12hr
3hr+1/3hr=40/12hr
everyday8customers
every week 30customers
A^2+B^2=C^2, this formula is used to find the length of a hypotenuse only if the triangle is a right triangle (has a 90 degree angle)
Answer:
Linear Pair postulate; triangle angle sum conjecture; subtraction property of equality.
Step-by-step explanation:
The Linear Pair postulate states that if two angles form a linear pair, then the sum of their measures is 180°. This is the reason for the first statement.
The Triangle Angle Sum conjecture states that the sum of the measures of the angles of a triangle is 180°. This is the reason for the second statement.
In order to isolate m∠ZAB, we must subtract m∠CAB from each side. The subtraction property of equality is what allows us to do this.
The cost of next model car is $ 33136.
Step-by-step explanation:
Given,
The cost of current model car is $38000
The next model car is 12.8% less than the current model.
To find the cost of next model
Formula
If the price of object is $x and it decreases r% for next year, the value o the object for next year is = $ x×(100-r)%
So,
The cost of next model = $ 38000×(100-12.8)%
= $ 38000×87.2%
= $ 33136
