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Earn +20 ptsQ: What means of Q.ED in maths when theorem proved?
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what is a perfect square between the numbers 60 and 115?
64 = 8*8 = 8^2 QED. 81 = 9*9 = 9^2 QED. 100 = 10*10 = 10^2 QED. NOTE: 7^2 = 49 < 60 so that fails and 11^2 = 121 > 115 so does this.
How do you do distance rate and time problems?
Generally: RATE = DISTANCE / TIME -or- DISTANCE = RATE * TIME -or- TIME = DISTANCE / RATE qed
What is 1 plus 1 equals 1?
The precursor to a worm cut in half. The two 1's would have originally been just a single 1. QED.
What does t represent in this equation 3t plus 4 equals t plus 13?
Gather like terms: 3t - t = 13 - 4 ie 2t = 9 so t =4½ Check: 3t = 13½ + 4 = 17½, 4½ +13 = 17½ QED
You have 5.15 in dimes and quarters you have eight more quarters than dimes how many quarters do you have?
q = d + 8. 10d + 25q = 515 so 10d + 25d + 200 = 515 ie 35 d = 315 so d = 9 and q = 17 Check 9 x 10 + 17 x 25 = 90 + 425 = 515 QED
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