The problem asks which two triangles are congruent, or identical.
The correct answer is B) ΔDEF ≅ ΔJKL
Angle D corresponds to angle J, at 38°
Angle E corresponds to angle K, at 46°
Angle F corresponds to angle L, at 96°
Angles are congruent.
Side DE corresponds to side JK, at 8.8cm.
Side FE corresponds to side LK, at 5.4cm.
Sides are congruent.
Answer:
Step-by-step explanation:
Question 1
- x = 180° - 2*72° = 180° - 144° = 36°
Question 2
- x + 2(x/2) = 180°
- 2x = 180°
- x = 90°
Answer:
Step-by-step explanation:
Given
See attachment
Required
Find BC
The sum of 
is 360.
So:
Collect like terms
Solve for n
From the circle:
Substitute 14 for n
Answer:
y = -5x + 21
Step-by-step explanation:
perpendicular lines have slopes that are negative reciprocals.
The given line has a slope of 1/5, so the perpendicular line will have a slope of -5.
y = -5x + B
-4 = -5(5) + B
B = -4 + 25 = 21
y = -5x + 21
Answer:
Step-by-step explanation:
A) either radius or diameter and height
V = πR²h or πD²h/4
B) Radius is half a diameter, R = 4 cm
C) Rather depends on how they are put together.
Placing the rectangular faces touching would make a cylinder
D) V = 3.14(4²)(2) = 100.48 ≈ 100 cm³
E) divide by 2
i.e. V = ½πR²h
F V = ½(3.14)(4²)(2) = 50.24 ≈ 50 cm³
