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equation(1) h = 3t^2 a) find h when t=5 b)find t when h=108

for part AYou would but the t 2 into brackets , then substitute t=5 to get h=3(5 2 ) using BIDMAS do the 5 2 = 25 so that h=3(25) so you end up with h=75 for part B first you would rearrange the equation to ...
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Answered by Danielle N. • Maths tutor
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What is the difference between a phagocyte and a lymphocyte?

One of the first cells to respond to an infection will be a phagocyteThese migrate to the pathogen (foreign object with potential to cause disease)They engulf the phagocyte in a process known as phagocytosis...
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Answered by Omar B. • Biology tutor
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how do i know when to use the preterite and when to use the imperfect tense in spanish ?

The imperfect tense and the Preterite tenses are the two main past tenses in Spanish, yet they are used in different situations. The preterite is used to talk about completed events or actions in the past wi...
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Answered by Islay S. • Spanish tutor
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If a curve has equation y = (-8/3)x^3 - 2x^2 + 4x + 18, find the two x coordinates of the stationary points of this curve.

The first step in solving this question is to differentiate equation y with respect to x. To differentiate a given 'x' term in an equation use the following method --> x n becomes nx (n-1) .y = (-8/3)x 3 ...
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Answered by Robyn T. • Maths tutor
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Why does the breathing rate not return to normal after vigorous exercise?

During vigorous exercise, muscles are not supplied with enough oxygen. This means that cells have to respire anaerobically. Anaerobic respiration involves no oxygen. This leads to a build-up of lactic acid i...
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