Answer:
Amina practices the piano for 54 minutes each week.
Step-by-step explanation:
45% * 120min = 0.45 * 120min = 9/20 * 120min = 9 * 6min = 54min
Answer:
The equation 
gives average time spent on 35 rehearsals.
Step-by-step explanation:
Please consider the complete question.
The play director spent 190 hours preparing for a play. That time included attending 35 rehearsals that took varying amounts of time and spending 
hours on other responsibilities related to the play. What question does the equation help answer?
Since time spent on each rehearsal is 35 hours, so time spent on 35 rehearsals would be 
.
hours is time spent on other responsibilities related to play. The sum of these times equals to total time spent on preparing the play.
Now let us solve our equation step by step.
Time spent on 35 rehearsals is 96.25 hours and we are told that each rehearsal took different amount of time. Dividing 96.25 by 35 we will get average time spent on each rehearsal.
Therefore, equation gives average time spent on 35 rehearsals.
Answer:
$3.90
The cost of making them all is 1.50 subtracted from the profit he made
Answer:
A. x = 3.03
B. x = 4/3
Step-by-step explanation:
A. 2000 (x-0.03) = 6000 is quickly simplified byu dividing both sides by 2000:
(x - 0.03) = 3. Removing the parentheses, we get: x = -0.03 = 3, or x = 3.03.
B. The distributive property is the faster method here. We determine that the LCD is 12 and multiply both sides of this equation 1/4 (4+x) = 4/3 by 12:
3(4 + x) = 16
and then carry out the indicated multiplication: 12 + 3x = 16, or
3x = 4, or x = 4/3
