In total there are 32 keys.
There 24 silver and copper keys so the probability of one being drawn is 24/32
Now just simplify
24/32 = 12/16 = 6/8 = 3/4
Answer:
by force I suppose
Step-by-step explanation:
how is this mathematics?
C = (pi) * d
C / (pi) = d
30 / 3.14 = d
9.55 = d
Assume that the length of the rectangle is "l" and that the width is "w".
We are given that:
(1) The length is one more than twice the base. This means that:
l = 2w + 1 .......> equation I
(2) The perimeter is 92 cm. This means that:
92 = 2(l+w) ...........> equation II
Substitute with equation I in equation II to get the width as follows:
92 = 2(l+w)
92 = 2(2w+1+w)
92/2 = 3w + 1
46 = 3w + 1
3w = 46-1 = 45
w = 45/3
w = 15
Substitute with w in equation I to get the length as follows:
l = 2w + 1
l = 2(15) + 1
l = 30 + 1 = 31
Based on the above calculations:
length of base = 31 cm
width of base = 15 cm
