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Posts tagged with Israel

What do you mean by “a margin of error?”

December6

Yes, we often read about “a margin of error” when it comes to surveys or polls. Here is one that appeared in the Associated Press just the other day, regarding the upcoming elections in Israel: “JERUSALEM (AP) ” A poll conducted ahead of Israel’s March elections and published Friday indicates strong support for the country’s […]

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The Real Mathematics Stress Test

July11

Spare a thought for students presently sitting exams in Israel, where sirens and rockets have made the sitting of the Mathematics Matriculation Exams particularly harrowing recently! The Jerusalem Post reports that, “High school students throughout the country sat down on Thursday for a second opportunity testing of the mathematics matriculation exam amid the added threat […]

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Post Support

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]