Step-by-step explanation:
length of each rectangle= 9 1/14=127/14
breadth of each rectangle=5=4 1/2= 9/2
so perimeter of 1 rectangle= 2(l+r)
=2(127/14+ 9/2)
=2(127+63)/14
=2×190/14
=190/7
=27.14 feet
so total length of fencing= 4×27.14
=108.57 feet
hope you understand the solution and good luck!!
Answer:
5/7
Step-by-step explanation:
6/7 + [-1/7]
Since the denominators are the same, add the numerators
6+-1 = 5
Put this over the common denominator
5/7
Answer:
0.245
Step-by-step explanation:
In order to find find the probability that the mean of the groups age is between 90 and 100 months, we have to find z for each value
Z = (x – mean)/standard deviation
Le x be the average age of a vehicle
Z1 = (90 – 96)/16 = -0.375
Z2 = (100 – 96)/16 = 0.25
Then we use the z table to find the area under the curve.
Area for Z1 = 0.354
Area for Z2 = 0.599
The probability that the mean of the groups age is between 90 and 100 months can be found as follows:
0.599 – 0.354 = 0.245
Let x be the length of the edge of the original cube. When increased to twice its original size it becomes 2 x which gives a volume of
2x × 2x × 2x = 8x³
The volume is known. Hence
8x³ = 64,000
x³ = 8,000 which gives x = 20
<span>The area of one face of the original (before the increase) is given by x2</span>
x² = 20² = 400 square centimeters