P / 9 = 72
Multiply both sidess by 9
P / 9 (9) = 72 (9)
p = 648
(-5C^2)^3-(5c)^6
-125C^5 - 15625c^6
Hypothenuse is the longest side
You can see the X is the longest
Solution: A. X
100-30=70-50=20
there's your equation
Let t represent Todd's age now.
.. 4(t -3) -(t -3) = 81 . . . . . . 3 years ago, their differnce in ages was 81.
.. 3t -9 = 81
.. t = (81 +9)/3 = 30
Todd is 30 now.
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You can also work this by considering "ratio units." 3 years ago, the ratio of their ages was 4:1, a difference of 3. That difference corresponds to 81 years, so each "ratio unit" represents 81/3 = 27 years. Todd's age then was 1 ratio unit, 27 years. Now, Todd's age is 30.
