Answer:
The answer is 32.
Step-by-step explanation:
Remember that order of operation is very important in this problem.
Substitute x for 3 and y for 2 in the equation.
When solving the first term, we must note that we have to square the 3 first before we multiply it by 4. So, 4(3)^2 is basically 36. To simplify the second term you just have to do 2*2, which is 4. 36-4=32, which is the answer.
The first thing we must do for this case is find the amount of minutes we have then:
"45 minutes each day, 5 days each week, for 12 weeks":
(45) * (5) * (12) = 2700 minutes.
We consider the following conversion:
1 hour = 60 minutes.
Therefore the number of hours is:
(2700) * (1/60) = 45 hours
Finally the average rate in laps per hour is:
Average = (1800) / (45)
Average = 40 laps / hour
Answer:
his average rate in laps per hour is:
40 laps / hour
Answer:
160in²
Step-by-step explanation:
40% = 0.4 = 4/10
The length is 20, 40% of that is (0.4)(20) = 8in
Length * width . = 20*8 = 160in²
Answer:
$520.96
Step-by-step explanation:
The composite is made up of 2 semicircles and a rectangle:
⇒ Radius of the circle = 2 ft
⇒ Length of the rectangle = 5 ft
⇒ Width of the rectangle = 4 ft
Area
⇒ π(2)² + (5 x 4)
⇒ 4π + 20
⇒ 32.56 ft²
Cost
= 32.56 x 16
= $520.96
Answer:
width = 7/2
length = 8
Step-by-step explanation:
