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for part AYou would but the t² into brackets , then substitute t=5 to get h=3(5²) using BIDMAS do the 5² = 25 so that h=3(25) so you end up with h=75
for part B fir...

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 phagocyto...

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...

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 --> xⁿ becomes nx^(n-1...

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 aci...