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A 20-foot ladder is leaning against a vertical wall. The bottom of the ladder is pulled away horizontally from the wall at 3 feet per second. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 10 feet away?

This question can be divided into two different equations. In order to calculate how fast the ladder is sliding downwards, you need to know at what original vertical height the ladder is leaning on the wa...

Answered by Maximilian L. • Maths tutor

6282 Views

How do I find the equation of the normal to the curve y=x^2 at the point (x1,y1)? Where x1=2 and y1=4 .

I would get the student to draw a diagram of the situation.. so draw the curve y=x^2, the tangent at (2,4) and then the normal. Then I would highlight to them that the equation we want is the equation of ...

Answered by Mohammad M. • Maths tutor

3923 Views

Calculate the area of a circle where the circumference of the circle and sides of the square are tangential at 4 points.

Note this is:AQA GCSE Mathematics (8300) June 2017Paper 1: Non-Calculator 8300/1H - HigherQuestion 12The area of a square is its base multiplied by its height. In our case this gives an a...

Answered by Lewis S. • Maths tutor

2863 Views

What is 3.25 plus 3 and 3/4?

Answered by Kelan T. • Maths tutor

3569 Views

A plane flew from Frankfurt to Hong Kong. The flight time was 10hours 45minutes. The average speed was 852km/h. Work out the distance the plane flew.

Approaching this question, I firstly begin by reading the question carefully and determining what it is that needs to be calculated. The next stage is writing down any important information stated in the ...

Answered by Charlotte O. • Maths tutor

7230 Views