The perimeter of a square is the sum of its sides.
Then the perimeter is
P = 4L
Clearing the side we have:
L = (P / 4)
L = (12x + 52) / 4
L = 3x + 13
answer:
The side length of the square is 3x + 13 units
Step-by-step explanation:
a=b+3
when b=3
a+b= b+3+b= 2b+3 = 6+3=9
CP of pen = ₹20
Profit % = 20%
Profit % = profit × 100 / CP
20 = profit × 100 / 20
20 × 20 / 100 = profit
Profit = ₹4
Profit = SP - CP
4 = SP - 20
SP = ₹24
Let new CP be ₹x
Profit % = 25%
SP = ₹24
Profit % = SP - CP
25x / 100 = 24 - x
24x / 100 + x = 24
125x / 100 = 24
5x / 4 = 24
x = 24 × 4 / 5
x = ₹ 19.20
Answer:
3.14
Step-by-step explanation:
The difference between her score and the mean is:
20 − 31 = -11
The number of standard deviations that equals is:
-11 / 3.5 ≈ -3.14
Her score is approximately 3.14 standard deviations below the mean.
I would tell Eddie that his prediction isn't wrong, but it could be made better. It isn't likely that the coin will land heads up exactly 325 times. He could say something like "It will land heads up ABOUT 325 times" or "It will land heads up about half the time". The magic word is ABOUT.
