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Sean drives from Manchester to Gretna Green. He drives at an average speed of 50 mph for the first three hours. He then breaks and drives the final 150 miles at 30 mph. Sean thinks his average speed is 40 mph ,is he correct?

This is a relatively complicated mechanics question requiring the student to put aside their initial assumption and work with the actual meaning of average speed. In order to do this the student must find...

AB
Answered by Adam B. Maths tutor
6409 Views

Why did Communist Russia win the Russian Civil War?

When assessing this question, it is worth taking into account the natural resources and geographic factors which gave Lenin's government an inherent advantage. A good starting point for this is that the t...

DR
Answered by Daniel R. History tutor
2711 Views

A square is placed in a circle of area (49π)cm^2 such that all four vertices of the square lie on the circumference of the circle. What is the area of the square?

It's always helpful to draw a diagram beforehand.Since we know the area of the circle is (49π)cm2, we can work out the radius using A=πr2 . Rearranging, we get r = 7cm. Add this info...

KS
Answered by Karnan S. Maths tutor
4613 Views

Make x the subject of the formula y=(4x+5)/x

xy=4x+5 xy-4x=5x(y-4)=5x=5/(y-4)

RP
Answered by R P. Maths tutor
4545 Views

What were the key differences between Martin Luther King and Malcolm X during the American Civil Rights Movement?

Introduction
Martin Luther King and Malcolm X were arguably the two most important leaders during the American Civil Rights Movement. Although both were dedicated to ending racial...

LH
Answered by Lucy H. History tutor
235338 Views

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