 06/27/18

#### The line y=mx is a tangent to the circle x^2+(y-2)^2=2.

Find algebraically the values of m and the points of contact of the tangents to the circle.

01/17/18

#### Using induction, show that ∀n∈N \ {0,1}, 1 + 1/(2^2) + … + 1/(n^2) > 3n/(2n + 1)

∀n∈N \ {0,1}, 1 + 1/(2^2) + … + 1/(n^2) > 3n/(2n + 1) N denotes the Natural Numbers. I tried adding 1/(n+1)^2 to both sides but am stuck.

11/19/16

#### Geometry related question

Point K is a point inside a triangle XYZ. Let G, H, I be the orthogonal projections of the point K on the sides YZ, ZX, XY respectively. Let the orthogonal projections of the point X on the lines... more

08/22/16

#### Evaluate this equation:

Arctan[tan(-120°)]

08/22/16

#### Solve the following equation given that 0°=?<360°

cosθ - cosθ tanθ=0

11/06/15

#### the number of boys varied inversely as the number of teachers and directly as the number or girls squared

When there were 200 boys, there were 10 girls and 20 teachers. How many boys were there when there were 2 teachers and 8 girl?   Please help me understand how to created the equation when they... more

11/04/15

#### Fox and Bob traveled g miles in x hours.

Then they increased their speed by p miles per hour. How far could they go in ax hours at the new rate?

10/30/15

#### Factor: 3y^{2n+1} + 12y^{3n+2}

Factor: 3y2n+1 + 12y3n+2

10/27/15

#### Acorns varied directly as walnuts and inversely as squirrels squared.

When there were 28 acorns, there were there were 7 walnuts and 3 squirrels. How many acorns were there when there were 4 walnuts but only 2 squirrels?

10/13/15

10/13/15

07/02/14

#### One bag contains 6 green and 2 white marbles. A second bag contains 7 blue and 4 silver marbles. One marble is drawn from each bag. What is P (green and silver)

Choices are ;    2/11  3/44  3/11 7/44

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