Answer:yu
Step-by-step explanation:
Answer:
67.5 tiles
Step-by-step explanation: 18 times 15 equals 270, and 270 divided by 4 equals 67.5. So it will take 67.5 4in tiles to cover the room.
(180-144)° + 3x + 90° = 180°
36 + 3x + 90° = 180°
x = 18°
Part A: Charlie's answer is incorrect
In step 2 of Charlie's answer he subtracted 5 from each side. Since 5x is multiplication, he must DIVIDE each side by 5 to get x by itself. The problem should have worked out like this...
Step 1: 5x = 30
Step 2: x = 30/5
Step 3: x = 6
Part B: There is only 1 solution for this problem.
