10
its 5 because if y is 3 then u have to ask yourself wat times 3 + 7 is 22
true
xy^(2) - y + 2x = -3 And y = 7 Substitute for 'y' Hence x7^(2) - 7 + 2x = -3 49x + 2x - 7 = -3 51x = 4 x = 4/51 = 0.078431372....
It is an expression in the form of: xy+7
89
It is an expression in the form of: xy+7
Equations: 3x-5y = 16 and xy = 7 Solutions: (7, 1) and (-5/3, -21/5)
We havey = 2x + 1 = 2(4y-2) + 1 = 8y - 3 iff 7y = 3 iff y = 3/7 iff x = 4y - 2 = 12/7 - 2 = -2/7(using "iff" for the double-arrow "is equivalent to" symbol which my PC won't copy).Thus xy = (-2/7)(3/7) = -6/7.
4 plus 3 equals 7
96
false. because 5plus 3 plus 7 equals, 15, and 15 plus three is not seven
i suppose 20 as an answer if its not a trick question.