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x = 3t - 4, y = 5 - (6/t), t > 0, find "dy/dx" in terms of t

2t -2
TJ
Answered by Tariq J. Maths tutor
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Work out the number of people in the office.

In an office there are twice as many females as males. 1/4 of the females wear glasses. 3/8 of the males wear glasses. 84 people in the office wear glasses. Work out the number of people in the office.Let th...
LL
Answered by Linyu L. Maths tutor
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Could you explain the imperfect tense?

The imperfect tense conveys an action that happened in the past. However, this differs from the perfect tense as imperfect implies the action was continuous / happened regularly in the past. It can be compar...
SH
Answered by Sasha H. French tutor
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(a) Name the organs which produce each of the following hormones. Choose from this list. ovaries brain liver stomach pancreas testes kidney (i) testosterone. (1 mark, 1 li

(a) (i) testes; (ii) pancreas; (iii) ovaries; (b) in the blood; (c) (i) insulin; (ii) contains glucose/sugar;
NM
Answered by Niko M. Biology tutor
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Describe the forces acting on a skydiver jumping out of a plane and explain why opening a parachute reduces the velocity

Initially the air resistance (r) is low, and the force due to gravity (mg) is high. These forces are unbalanced so the skydiver accelerates downwards. (mg > r)As the velocity increases the force of air re...
FJ
Answered by Fred J. Physics tutor
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