Answer:
I believe the answers in the blank should be 4
Step-by-step explanation:
Answer:
x≥6
Step-by-step explanation:
Answer:
Therefore the inequality that represents her practice in four weeks is:
Step-by-step explanation:
Mary practiced the piano for two or more each week, in other words the number of hours practiced in a week must be equal or greater than 2. A math expression that can represent this situation can be seen below:
The problem wants us to write an inequality to state how many hours she practiced in four weeks. In order to do this, we need to multiply the number of hours she practiced in a week, given by the last expression, by four. We have:
Therefore the inequality that represents her practice in four weeks is:
Answer:
$56.50
Step-by-step explanation:
2 children is $32.
1 adult is just $24.50
Add these up: $32 + $24.50 = $56.50.
Answer:
Boat speed = 75 miles/ h
Current speed = 25 miles/ h
Step-by-step explanation:
Remember that:
Where
s is the speed
d is the distance
t is the time.
If we call s the speed of the boat and we call c the speed of the current, then we have to:
Boat speed downstream (Boat speed in the same direction as river speed):
Where:
Boat speed upstream (Boat speed in the opposite direction than the river speed):
Where:
Then we have the following system of equations:
(1)
(2)
Add equation (1) with equation (2) and solve for s:
Now substitute s in equation (2) and solve for c
Finally
Boat speed = 75 miles/ h
River speed = 25 miles/ h