If we let 'x' equal the number of adult tickets then 8-x is the number of kid tickets. Te revenue from adult tickets would be $8 times x and the revenue from kid tickets would be $3 times 8-x. Summed together the revenues would equal $ 33. Then you solve for 'x' the number of adult tickets and 8-x the number of kid tickets.
o would to often be confused with 0 (zero) .... I imagine.
Its just a subscript to denote a difference in terms..... like x1 is different than the second x or x2 , it doesn't imply any mathematical calculation like x2 does (x squared.....or x * x )
Here is a formula for area of octagon when you only know one side length:
The area of an octagon = 2 x (1 + √2) x B2 Where B = 8 cm in this case....
logb(MN)= logb(M)+logb(N).
loga( 2*3*3)= log 2 + log 3 + log 3
log (18 ) = .2789 + .4421 + .4421=......
perimeters are equal
rectangle perimeter = 5x-1 + x + 5x-1 + x
equals triangle perimeter 5x + 6x+7 + 12
5x-1 + x + 5x-1 + x = 5x + 6x+ 7 + 12 solve for 'x' then you can compute the sides of the rect and tri
landscaping hours = x money from landscaping = 11x
b = babysitting hours = 3x money from babysitting = 7(3x) money summed = 96
11x + 7(3x) = 96 solve for 'x' the landscaping hours....then b = 3x
Tank ends pi r ^2 = pi (4)^2 this is ONE end....remember, there are TWO
tank sides pi d h = pi ( 8) (20) add this to the two ends......
angles of triangles total 180o
2x + 4x-4 + 100 = 180 solve for 'x' then the angles are x 2x and 4x-4
Well the two short sides are equal one is 2x+4 the other is 12
2x+4 = 12 means x = 4
If x = 4 then the long side becomes 4x+1 = 4(4) + 1 = 17
then perimeter = 17 + 12 + 17 + 12 ====........
