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10 students went to both France and Spain. This means the intersection of the two circles has 10 people. Use this information to subtract 10 from the 20 that visited France and the 15 that visited Spain. ...
To approach a question like this we must first simplify the numerator to make things easier. This ends up being equal to 32 (I will demonstrate on the whiteboard). Then we are left with a fraction that ha...
3 x ((2x + 5) /3) = 11 x 32x + 5 = 33(2x + 5) - 5 = 33 - 52x = 28 (2x) /2 = 28 / 2x = 14
Although this sounds like a complex problem, we can simplify it down to just finding the roots of the equation. Let's start by drawing a standard x^2 curve (would draw). We can see that it goes through th...
Roots are where the graph crosses the x-axis, which we find by solving the equation to find x. x = -6 or x = -3
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