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Answers by Thomas E.

Let x = price of adult ticket and y=price of child ticket, set up a system of 2 equations in 2 variables:   6x + 2y = 78 3x + 6y = 84  solve via elimination (multiply 2nd equation by -2)    6x +  2y = 78 -6x - 12y = -168  add them...

Please help me. (answer)

Set up the ratio:   5.5/11 = 12/(11+x)  and solve for x   132 = 5.5x + 60.5   x = 13 ft  

MATH PUZZLE (answer)

1 letter answers = 7   2 letter answers = 7x6=42   3 letter answers = 7x6x5=210   4 letter answers = 7x6x5x4 = 840   5 letter answers = 7x6x5x4x3=2520   6 letter answers = 7x6x5x4x3x2=5040   7 letter answer = 7x6x5x4x3x2x1...

Word problem (answer)

2500 = 12500(5).18t   .2 = 5.18t   ln(.2) = .18t(ln(5))   t = ln(.2)/(.18(ln(5)))

word problem (answer)

x-24+48-55=17   x=48, if we assume each cup is 8 oz then 48x8/128 = 3

word problems (answer)

If we assume simple interest for 1 year, then we let x = amount invested at 10% and 4000-x = amount invested at 12%   460 = .1x + .12(4000-x)   460 = .1x + 480 - .12x   -20 = -.02x   x = 1000 at 10%, 3000 at 12%