Answer:
the option must be a or b ....
Answer:
The original number was 36.7.
Step-by-step explanation:
Multipliers:
The multiplier for a increase of a% is 1 + a/100.
The multiplier for a decrease of b% is 1 - b/100.
In this question:
The original value is x.
Increased by 28%, so we have that 1 + (28/100) = 1.28x. Equals 47. We have to find x.
1.28x = 47
x = 47/1.28
x = 36.7
The original number was 36.7.
Answer:

Step-by-step explanation:
Given
Shape: Cube
Dimensions: x, 3x and 2x

Required
Show that 
First, calculate the volume


becomes

Divide both sides by 9

For
, the value of x as to be: 1, 2, 3, 4 or 5
Hence:

An appropriate step is ...
C) Construct a bisector of angle BAC
_____
I suppose you could get there faster by claiming ΔABC ≅ ΔACB by ASA, then AB ≅ AC by CPCTC.