Answer:
60=2(20)+2x
x=10
Step-by-step explanation:
First, let's write some equations. I wrote 60=2(20)+2x, where x is the length of the room. To solve, first multiply 2 times 20 for 40 (60=40+2x). Then, I subtracted 40 from both sides (20=2x). Finally, I divided on both sides by 2 (10=x).
Answer:
x = 3
Step-by-step explanation:
The standard form of the equation of a line is ...
ax + by = c
For two points (x1, y1) and (x2, y2), this can be written as ...
(y2-y1)x -(x2-x1)y = (y2-y1)x1 -(x2-x1)y1
(7-(-6))x -(3-3)y = (7-(-6))3 -(3-3)(7)
13x - 0y = 13·3
Standard form requires no common factors among the constants, so ...
x = 3
Answer:
x = 27
Step-by-step explanation:
∠ ABD and ∠ BDE are alternate angles and are congruent, then
∠ BDE = 72°
∠ ADB + ∠ BDE + ∠ EDF = 180° ( sum of angles on a straight line ), that is
2x + 72 + 2x = 180
4x + 72 = 180 ( subtract 72 from both sides )
4x = 108 ( divide both sides by 4 )
x = 27
1/4 should be correct PLS MAKE BRAINLIEST
