Answer:

Step-by-step explanation:
Given
The attached figure
Required
Solve for x
3x and 45 are supplementary angles
So:



Solve for x


Answer:

Step-by-step explanation:
Given



Orchestral =
of music practice time
Required
Determine time spent on orchestral pieces
From the given parameters, we have:
Orchestral =
of music practice time
Substitute
for music practice time.
So, we have:



The answer for this question is very tricky but is to work out its B.
Answer:
x = -18
Step-by-step explanation:
1/2x = -9
(21)1/2x = -9(2/1)
x = -9/1(2/1)
x = -18/1
x = -18