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Given a spinner divided in 3 sections numbered 1, 2 and 3, and that the arc of section 2 is double that of section one (~57.6 cm), calculate pi to 2 decimal places. The radius of the spinner is 30cm and the angle sub-intended by section 3 is 30 degrees.

Use angle of section 3 to get ratios of arcs: Realise either one of the arcs 1 or 2 will do.Calculate 360-30 / 3 to get 110 degrees for section 1.Calculate ratio of arcs for section 1: 11/36 Find pi: Multipl...
FC
Answered by Filipe C. • Maths tutor
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Find the equation of the line L passing through (0, 3) and (5, 7). What would the gradient of a line perpendicular to this line be? What about a line parallel to it?

Since L is a straight line between two points, it has the form y=mx+c, where m is the gradient. To find m we use that it is the difference in y values of the points divided by the difference in x values, ie ...
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Answered by Victoria I. • Maths tutor
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When do I use the passe simple and when do I use the imparfait?

When deciding what verb tense to use between the passe simple and the passe compose, you need to think about the type of action that is being performed. Say you are telling a story about the past. To set the...
EO
Answered by Ellen O. • French tutor
3891 Views

Why did Chamberlain embark on the Tariff Reform campaign?

Joseph Chamberlain embarked upon the Tariff Reform campaign in the aftermath of the Boer war to rectify two fundamental problems that were plaguing British society and industry. Chamberlain outlines his reas...
BK
Answered by Bethan K. • History tutor
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A particle of mass 0.5 kg is moving down a rough slope (with coefficient of friction = 0.2) inclined at 30 degrees to the horizontal. Find the acceleration of the particle. Use g = 9.8 ms^-2.

Resolving perpendicular to the plane : R - mg cos30 = 0 . Therefore, R = m g cos30 , where R is the reaction force perpendicular to the plane. Resolving down the plane : ma = m g sin30 - 0.2 R = m g sin30 - ...
MB
Answered by Matthew B. • Maths tutor
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