MAB = 360 - 255 = 105
<ADB = 1/2(mAB) = 1/2(105) = 52.5
Answer
52.5°
Answer:
x = 
Step-by-step explanation:
The absolute value always returns a positive value but the expression inside can be positive or negative, that is
x + 4 = 3x - 5 ( subtract 3x from both sides )
- 2x + 4 = - 5 (subtract 4 from both sides )
- 2x = - 9 ( divide both sides by - 2 )
x = 
OR
-(x + 4) = 3x - 5
- x - 4 = 3x - 5 ( subtract 3x from both sides )
- 4x - 4 = - 5 ( add 4 to both sides )
- 4x = - 1 ( divide both sides by - 4 )
x = 
As a check
Substitute these values into the equation and if both sides are equal then they are the solutions
|
+ 4 | = |
| = 
right side =
- 5 = 
left side = right side , thus x =
is a solution
check second solution
|
+ 4 | = |
| = 
right side =
- 5 = - 
right side ≠ left sides, hence not a solution
Answer: x = -2
Step-by-step explanation:
-x + 4x = x - 4
=> 3x = x - 4
=> 3x - x = -4
=> 2x = -4
=> x = -2
Answer:
33 tiles
Step-by-step explanation:
Given

Required
Determine the number of tiles in 11 points
Represent this with x. So, we have:


Cross Multiply

Multiply through by 3


Answer:
PQ = 28 cm
QR = 21 cm
Step-by-step explanation:
PQ = PS + SQ = 16 + 12= 28
QR = QS + SR = 12 + 9 = 21