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Expand (x-5)(2x-3)

(x-5)(2x-3)= 2x²-3x-10x+15

= 2x² -13x + 15

Answered by Sharone S. • Maths tutor

4764 Views

You are told that the y is proportional to x^2 and that when y=75, x=5. Find a formula for x in terms of y.

If we know that y is proportional to x²then we using the given values we can write 75= 5²--> 75=25, however this is obviously not true but all that remains is to multiply the 5<...

Answered by Jenieka P. • Maths tutor

2960 Views

Explain the processes that lead to the contraction of a single muscle

A nervous impulse travels to the neuromuscular junction and causes the release of acetylcholine into the synaptic cleft. Depolarisation of the motor end plate spreads through the muscle via transverse tub...

Answered by Prashan B. • Biology tutor

2473 Views

1. (a) Express 7cosx - 24sin x in the form R cos (x + a), (b) hence what is the minimum value of this equation

(a) Rcos (x+a) = Rcosxcosa - Rsinxsina

7cosx - 24sinx = Rcosxcosa - Rsinxsina

Rcosa = 7, Rsina = 24

Tan a = 24/7

a = 1.287 (3 S.F.)

R²

Answered by Prashan B. • Maths tutor

13362 Views

Analyse Gatsby’s attitude to Daisy in aiming to achieve his own version of the American Dream. Refer to the extract as a starting point.

Example paragraph:

The extract initially describes Baldwin’s departure from a building, and the particular language choices aid us in relating the text to Gatsby’s intense business lifestyle and ho...

Answered by Charlotte F. • English tutor

1980 Views