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Shape ABCD is a parallelogram. Y is the mid-point of AB and Z is on BC such that BZ=1/2ZC. Given that AB=a and BC=b, describe, in terms of a and b: a) AC b)CY c)YZ

a) AC = a + b b) CY = -b -1/2a c) YZ = 1/2a + 1/3b
MC
Answered by Matthew C. • Maths tutor
5087 Views

Thomas wants to see how far he can throw a javelin. He records four of his throws as 45 metres, 40 metres, 55 metres, and x metres. Given that the mean of Thomas' throws is 50, determine the value of x.

Answer is 60.
MC
Answered by Matthew C. • Maths tutor
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A particle of mass 0.8 kg moving at 4 m/s rebounds of a wall with coefficient of restitution 0.3. How much Kinetic energy is lost?

Coefficient of Restitution (CoR): Speed of Approach x CoR = Speed of Seperation 4 x 0.3 = 1.2 ms -1 Kinetic Energy (KE) Lost: KE lost = Initial KE - Final KE Initial KE = 1/2mv 2 = 1/2 x 0.8 x 4 2 = 6.4 J Fi...
GM
Answered by George M. • Maths tutor
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What is Plato's Analogy of the Cave?

The Analogy of the Cave is a model Plato used in Book VII of The Republic to explain his metaphysical Theory of the Forms It is composed of four key elements:- The sun represents the Form of the Good. Just a...
KM
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How do I conjugate the perfect tense?

In French, the perfect tense is a past tense. It translates to 'I did' or 'I have done'. It is formed by using not one, but two verbs. Perfect tense = subject + auxilary verb + past participle The auxilary i...
HJ
Answered by Harriet J. • French tutor
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