Welcome to H3 Maths

Blog Support for Growing Mathematicians

Posts tagged with exponents

Math Fun in the Urban Jungle – A Tale of More than Two Cities

November18

Glen Whitney stands at a point on the surface of the Earth, north latitude 40.742087, west longitude 73.988242, which is near the center of Madison Square Park, in New York City. Behind him is the city’s newest museum, the Museum of Mathematics, which Whitney, a former Wall Street trader, founded and now runs as executive […]

Why do we need quantum computers?

February5
by posted under Uncategorized | tagged under , , , , , , , ,  |  Comments Off on Why do we need quantum computers?

Algebra Booklet for Junior Algebra

December31

The New Zealand Centre of Mathematics offers a free Algebra Booklet for teachers and students. This is an excellent resource and should help improve algebraic skills for Year 9-11 (14-16 yr old) students. This 82 page booklet contains work on simplifying expressions, exponents, solving simultaneous equations using algebra and graphs. This website also includes videos, […]

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on Algebra Booklet for Junior Algebra

Post Support

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)?]

H3 Viewers



Skip to toolbar