Finding a common denominator between 10 and 12 to be 10*12=120, we can multiply 9/10 by 12/12 and 3/12 by 10/10 to get 108/120 and 30/120 respectively. Dividing the 2 (as we want to know how much 3/12 or 30/120 goes into 9/10 or 108/120), we get
(108/120)/(30/120)=(108/120)*(120/30)=(108/30)=3+18/30 (as 30 goes into 90 3 times and 108-90=18)
Area = A
Side length = L = 29 cm
number of sides = n = 9
Apothen = a = 40 cm
A = nLa / 2 = 9*29cm*40cm / 2 = 5,220 cm^2
Answer: 5,220 cm^2
If you divide 5 over 3 you get the decimal 1.6, not 15.
the
correct answer would be 45. how do i get that? read below.
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to solve:
1.multiply each side by 3, to get the 3 on the left side to cancel out. so you get x = 15 times 3.
2. 15 * 3 =
45
Answer: 360g
120 --> 10
x ---> 30
120*30=10*x
3600= 10*x
x= 3600/10
x= 360
Matthew needs 360g of flour