Answer:
27
Step-by-step explanation:
643-166=477
477÷18=26.5
Then, round to the nearest whole.
Which makes it 27 sets.
Answer:
The formula for the area of a square with sides of length x is A = x2 so
x2 = 400 is the equation
This equation has 2 solutions, namely x = ±√400 = +20 or -20
The negative solution does not make sense because a length cannot be less than 0.
The total length needed to go around the painting is the perimeter of the square, which is
P = 4*x = 4*20 = 80 inches
Answer:
Option (b) 10 to 20
Step-by-step explanation:
Let the number obtained between the interval be 'x'
Therefore,
according to the question:
multiplying the number with 4 and then adding 8 to it to get 60
thus,
mathematically, we get
4x + 8 = 60
or
4x = 60 - 8
or
4x = 52
or
x = 13
Hence,
The 13 lies between the interval 10 to 20
Option (b) 10 to 20
