4(5x+25)
5(4x+20)
10(2x+10)
2(10x+50)
20(x+5)
hope this helps
Answer:
x-8=37
37+8=x
45=x
45 is your answer
Step-by-step explanation:
Answer: 110
Step-by-step explanation:
We first need to find the maximum perimeter of the circular area rug that will fit in the rectangular space. We use the shortest side of the rectangle as the diameter of the rug.
A circle drawn inside a rectangle.
A rectangle has a length of 12 feet and a height of 7 feet. A circle is drawn inside in the center of the rectangle with a line labeled Diameter extending from the top most point of the circle to the bottom most point of the circle.
P=2πr=2π×72=21.9911 ft
We then multiply the perimeter of the rug by the cost per foot.
cost =21.9911×5=$109.9555
Rounded to the nearest whole number, the cost of the maximum circumference circular rug that can fit in the dining room is 110 dollars.
Answer:
x =196
Step-by-step explanation:
Answer:
50π cm²/s
Step-by-step explanation:
Area of the circle A = πd²/4
Rate at which the area is changing with time is expressed as;
dA/dt = dA/dd*dd/dt
dd/dt is the rate at which the diameter is changing with time
dd/dt = 5cm/sec
dA/dd = 2πd/4
dA/dd = πd/2
Given that d = 20cm
dA/dt = dA/dd*dd/dt
dA/dt = πd/2*5
dA/dt = 20π/2 *5
dA/dd = 10π * 5
dA/dd = 50π cm²/s
Hence the area is changing at the rate of 50π cm²/s
