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:
Answer:
20.6
Step-by-step explanation:
The problem can be solved by applyPythagoreanean theory
a^2+b^2= c^2
19^2 + b^2= 28^2
361 + b^2= 784
b^2= 784-361
= 423
b= √423
= 20.6
Hello !
You have to do as follow :
-11-(-7)
-11+7
Your answer is -4
Answer:
66.67%
Step-by-step explanation:
75 /100 = .75
.75n = 45
45/.75 = 60
60 is n
60/90 = .666667
.666667 * 100 = 66.67%
